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File allocation

Subclass of:

707 - Data processing: database and file management or data structures


Patent class list (only not empty are listed)

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Class / Patent application numberDescriptionNumber of patent applications / Date published
707206000 Garbage collection 84
20100011038DISTRIBUTED STORAGE MANAGING APPARATUS, DISTRIBUTED STORAGE MANAGING METHOD, AND COMPUTER PRODUCT - A computer-readable recording medium stores therein a distributed storage managing program that causes a computer to execute obtaining a quantity M, the quantity M being a quantity of classes to which files are to be allocated; allocating, according to a predetermined algorithm, the files to the classes of the quantity M obtained at the obtaining; and allocating, by class and to storage apparatuses of a second quantity that is different from a current quantity of storage apparatuses, the files allocated to the classes of the quantity M at the allocating of the files to the classes, when a quantity of storage apparatuses used to store the files is changed from the current quantity to the second quantity.01-14-2010
20080222223STORAGE ALLOCATION IN A DISTRIBUTED SEGMENTED FILE SYSTEM - A file system (i) permits storage capacity to be added easily, (ii) can be expanded beyond a given unit, (iii) is easy to administer and manage, (iv) permits data sharing, and (v) is able to perform effectively with very large storage capacity and client loads. State information from a newly added unit is communicated (e.g., automatically and transparently) to central administration and management operations. Configuration and control information from such operations is communicated (e.g., automatically) back down to the newly added units, as well as existing units. In this way, a file system can span both local storage devices (like disk drives) and networked computational devices transparently to clients. Such state and configuration and control information can include globally managed segments as the building blocks of the file system, and a fixed mapping of globally unique file identifiers (e.g., Inode numbers) and/or ranges thereof, to such segments.09-11-2008
20090172048MEMORY STORAGE OF FILE FRAGMENTS - In some embodiments a beginning portion of a disk drive file fragment is stored in a memory, and the beginning portion of the disk drive file fragment is accessed from the memory. Other embodiments are described and claimed.07-02-2009
20100042663APPARATUS AND METHOD TO OPTIMIZE THE AVAILABLE STORAGE CAPACITY OF A PLURALITY OF SEQUENTIAL DATA STORAGE MEDIA DISPOSED IN A DATA STORAGE SYSTEM - A method to optimize use of available storage capacity of a plurality of sequential data storage media, wherein the method provides (M) sequential data storage media each comprising a plurality of blockids, where the (i)th sequential data storage medium comprises an (i)th available storage capacity, and where (M) is greater than or equal to 2, and where (i) is greater than or equal to 1 and less than or equal to (M). The method then receives source data comprising a plurality of segments, determines a quantum of data to store, determines if the quantum of data to store is substantially equal to an (i)th available storage capacity. If the quantum of data to store is substantially equal an (i)th available storage capacity, then the method writes the source data to an (i)th sequential data storage medium.02-18-2010
20090157777DYNAMICALLY ADDING PARTITIONS TO BE DISTRIBUTED DIRECTORY SETUP WITH NO DOWNTIME - Dynamically adding n partitions to a distributed directory setup having x existing servers by modifying the configuration file to include the n new servers and implementing a replication setup mechanism with agreements to x+n−1 servers. The migration to dynamically add partitions is carried out while continuing to serve clients.06-18-2009
20090157776REPARTITIONING LIVE DATA - A data set typically does not stagnate and remain the same size over time. The capabilities of hardware (e.g., servers and storage devices) also do not stagnate and remain the same. A date set is often repartitioned to accommodate changes in size of the data set and/or changes in hardware capability. Hundreds or thousands of writes may be performed on the data set (e.g., database, directory, etc.) every second. So, even a few seconds of downtime are unacceptable. Instead of taking the data set offline, the data set can be repartitioned while still allowing access to the data set (“repartitiong live data”). Live data can be repartitioned by establishing update or replication queues for the new partitions while servicing write requests and read requests with the old partitions. After the data has been migrated, the update queues are drained to ensure data integrity.06-18-2009
20090125573Transactional multi-package installation - Described is a technology by which storage space in the form of allocation units (e.g., clusters of a storage volume) are intentionally allocated so as to likely be non-contiguous for a file's data. For example, random selection of each of the allocation units will likely provide non-contiguous allocation units; on solid state storage media, such a random distribution of a file's data does not significantly affect access times. In one aspect, a file system driver randomly allocates the allocation units, and records the allocation units in association with the file, e.g., in a master file table or similar database. Non-contiguous (e.g., random) allocation may be on demand as storage space is needed, and/or may be performed in anticipation of needing storage space for satisfying a later request. Once the storage space is no longer mapped to a file, reconstructing that file's data in forensic analysis is more difficult.05-14-2009
20090043832METHOD OF DETERMINING AND STORING THE STATE OF A COMPUTER SYSTEM - A state determination and storage system includes an orchestrator component, guide components, and analyzer components to analyze and store state information for desired portions of a computer system through an extension approach. The system uses extensions to abstract common code for reuse by other extensions. State information is extracted from the extensions and stored. The extensions themselves can be configured to capture partial state information if desired.02-12-2009
20090307291SMART CARD STORAGE SYSTEM AND FILE MANAGEMENT METHOD THEREIN - A smart card storage system, which comprises a storage region and a control unit, and a file management method therein. The storage region includes a FAT (File Allocation Table) storage region and a data region for storing files; the FAT storage region contains FAT entries; the data region contains blocks; each FAT entry corresponds to one of the data blocks. The control unit finds FAT entries in the FAT storage region, and has operation on files in the data region, e.g. create, store, update, read, delete and resize (truncate/append), according to the correspondence between FAT entries and data blocks.12-10-2009
20090307290Database Journaling in a Multi-Node Environment - A database spread over multiple nodes allows each node to store a journal recording changes made to the database and also allows a journaling component to manage the memory space available for journaling. Two threshold size values may be specified for the journal. The first threshold value specifies a journal size at which to being pruning the journal on a given node. A journal pruning algorithm may be used to identify journal entries that may be removed. For example, once a given transaction completes (i.e., commits) the journal entries related to that transaction may be pruned from the journal. The second threshold value specifies the maximum size of the journal. After reaching this size, journal entries may be written to disk instead of the in-memory journal.12-10-2009
20090271458DATA STORAGE SYSTEM AND STORING METHOD THEREOF - A data storing method includes providing a storage space, receiving a data stream, establishing a cluster link when the data stream is stored into the storage space, and before the data stream is completely stored in the storage space, storing a cluster number of a specific node in the cluster link and information about a cluster following the specific node, and setting the content of the specific node as an EOF. A data storage system thereof can access a real-time data stream stored in the storage space, or release the occupied space in the storage space through deleting the file of the real-time data stream, even if the real-time data stream is interrupted abnormally during storage.10-29-2009
20090271459Method and system for responding to file system requests - A system for responding to file system requests having file IDs comprising V, a volume identifier specifying the file system being accessed, and R, an integer, specifying the file within the file system being accessed. The system includes D disk elements in which files are stored, where D is greater than or equal to 1 and is an integer. The system includes a switching fabric connected to the D disk elements to route requests to a corresponding disk element. The system includes N network elements connected to the switching fabric. Each network element has a mapping function that for every value of V, specifies one or more elements from the set D that store the data specified by volume V, where N is greater than or equal to 1 and is an integer and N+D is greater than or equal to 3, which receives the requests and causes the switching fabric to route the requests by their file ID according to the mapping function. A method for responding to file system requests. The method includes the steps of receiving file system requests having file IDs comprising V, a volume identifier specifying the file system being accessed, and R, an integer, specifying the file within the file system being accessed at network elements. Each network element has a mapping function that for every value of V, specifies one or more elements from the set D that store the data specified by volume V. Then there is the step of routing the requests to a switching fabric connected to the network elements based on the file system request's ID according to the mapping function to disk elements connected to the switching fabric.10-29-2009
20080288563Allocation and redistribution of data among storage devices - Distributing and redistributing records among a changing set of storage devices is accomplished by grouping the records based on the starting and ending numbers of storage devices.11-20-2008
20090030956Proactive space allocation in a database system - A method and apparatus for proactively allocating space to a logical layer of a database is provided. Allocation of space to a logical layer of a database is an expensive operation that should be minimized. The allocation of space includes discovering free space in all the higher layers in the logical storage hierarchy. It also includes cross-domain system calls and cleansing disk-write operations. In prior approaches, the allocation processes were triggered on-demand, only a certain logical layer was discovered to be at full capacity when an insert-row operation was attempted. In one embodiment of the invention, space needs are statistically predicted based on prior rates of space consumption. The database server pre-allocates space as needed, based on the statistical predictions. Rates of consumption are examined periodically. Space is pre-allocated before any logical layer reaches full capacity by a combination of proactive background processes; foreground-triggered, background processes; and classic foreground allocation.01-29-2009
20090030957 Technique For Virtualizing Storage Using Stateless Servers - A technique for virtualizing storage using stateless servers is disclosed. In one embodiment, a method for virtualizing a plurality of file systems hosted on associated file servers, wherein each physical file system includes a storage space in which a plurality of data files may be stored, includes self discovery of the mapping information from the plurality of virtual file systems providing multiple consolidated global names spaces to the plurality of physical file systems upon startup by a VDS server.01-29-2009
20090013016SYSTEM AND METHOD FOR PROCESSING DATA FOR DATA SECURITY - System and method for processing data for data security. A method for encrypting a data file includes a step for providing an input file, which can be characterized by an input length, and providing a number of output files that include a first output file and a second output file. The first output is characterized by a first output length. The first output length is associated with the input length and the number of output files. The first output file includes a header section and a data section. The header section includes information associated with the number. In addition, the method includes a step for determining a first location and a second location of the input file. The second location is behind the first location by a known length.01-08-2009
20090006504Method and file system - In order to face fragmentation, a method for storing and organizing files on a storage medium via a file system reserves on the storage medium a non-fragmented segment for taking up a file by storing within the file system an identification of an address range of the segment. The file is written within the segment and information is stored in the file system. The information is suited to find the file. The size of the segment is derived by statistical methods from file sizes of a kind of the file.01-01-2009
20090006502Application-Specific Heap Management - Tools and techniques for application-specific heap management are described herein. The tools may provide machine-readable storage media containing machine-readable instructions for profiling an application to facilitate managing heap memory associated with the application, and for managing requests from the application to allocate or deallocate from the heap memory based on the profiling. The tools may also receive requests from the application to allocate buffers, and may determine whether an instance-level memory pool, which is associated with a portion of the application, contains enough free buffers to satisfy the request. Finally, the tools may receive requests from the application to deallocate buffers, and in response to the request, may deallocate the requested buffers into the instance-level memory pool. The tools may also determine whether the instance-level memory pool contains a number of free buffers that exceeds a threshold.01-01-2009
20090006501Zone Control Weights - A method and apparatus are provided for performing zone entity modifications to entities in a network wherein a set of generic zone entity modification commands with an estimated lower processing cost is selected for each modification. Prior zone entity modifications in the network and the associated quantity of entities and processing time associated therewith are stored in a data structure. In response to a zone entity modification request, data associated with the current request is evaluated in view of processing time for prior zone entity modifications. An estimate of processing time for the zone entity modification request is calculated for at least two sets of generic zone entity modification commands. The set of generic commands with an estimated lower processing cost is selected and applied to the current zone entity modification request.01-01-2009
20090006503System Virtualization Instance Management for Terminal Sessions - Terminal sessions providing remote access to functionality may be isolated from each other, as well as from the server system space, by being placed in system virtualization instances. Applications associated with terminal sessions may be allocated to system virtualization instances. In particular, system virtualization instances may be pre-instantiated, and applications may be dynamically allocated to the system virtualization instances, for example, according to a virtualization instance policy. The system virtualization instances may provide, in particular, an ability for terminal session components and associated applications to create, read, update and delete resources in a global name space of a host server without conflict, collision or other interference with each other or other server components.01-01-2009
20080294705Performance Improvement with Mapped Files - A method and apparatus for improving system performance by asynchronously flushing a memory buffer with system log entries to a log file. The apparatus and method minimize performance loss by detecting when a memory region that is mapped to a file is about to become full and generate or switch to a new memory region so that activities can be continuously written. A process dedicated to flushing the full memory region is instantiated and terminates once the memory region has been completely flushed to a file. All application and user processes can continue to run without interference or the need to manage the flushing of the memory regions.11-27-2008
20080215644Processing A Data Array With A Meandering Scanning Order Using A Circular Buffer Memory - The present invention relates to a data buffering device (09-04-2008
20090172050DUAL REPRESENTATION OF STORED DIGITAL CONTENT - Various methods, devices and systems are described for providing dual representation of stored digital content are described where the dual representation includes logical block data and corresponding data objects. Data object property information is synchronized with the data objects.07-02-2009
20080270492METHOD OF CHANGING THE PAGE SIZE OF A DB2 TABLE SPACE WHILE KEEPING THE OBJECT AVAILABLE - Provided is a method for online reorganization and increasing the page size of a DB2 object. A base table and related auxiliary table spaces are reorganized concurrently via a database utility, DB2 REORG utility. The database utility determines which auxiliary tables are related to the base table and automatically includes their respective auxiliary table in the same invocation of the utility. The reorganization is performed via allocated shadow data sets; page size of the allocated shadow data sets is dynamically updated during reorganization. The original data sets are switched with the newly built shadow data sets, and DB2 catalog values and control blocks are updated with new page size values.10-30-2008
20090182790Storage of Data - In one example, multimedia content is requested from a plurality of storage modules. Each storage module retrieves the requested parts, which are typically stored on a plurality of storage devices at each storage module. Each storage module determines independently when to retrieve the requested parts of the data file from storage and transmits those parts from storage to a data queue. Based on a capacity of a delivery module and/or the data rate associated with the request, each storage module transmits the parts of the data file to the delivery module. The delivery module generates a sequenced data segment from the parts of the data file received from the plurality of storage modules and transmits the sequenced data segment to the requester.07-16-2009
20090164535DISK SEEK OPTIMIZED FILE SYSTEM - A disk-seek optimized file system is provided that may be advantageously deployed in a computer system that supports simultaneous Digital Video Recorder (DVR) functionality and user interaction, such as recording several television (TV) shows while simultaneously supporting a video game played by a user. A computing device hard drive is logically divided into “chunks,”—a first chunk comprising volume metadata, and subsequent chunks comprising equal size “blocks.” A first block of a subsequent chunk comprises block bitmaps and a stream identifier table. The block bitmaps indicate subsequent blocks in the chunk that contain stream data for particular streams, which are identified in corresponding entries in the stream identifier table.06-25-2009
20090119352Method for Optimizing Generational Garbage Collection Through Object Life Heuristics - A method and apparatus to determine if an object should be instantiated in a nursery space or in a long lived space. Information as to real or estimated longevity of an object instantiated from a class is used to cause instantiation in the long lived space if the object instantiated is likely to be relatively long lived. Otherwise, default instantiation is made to a nursery space in which frequent garbage collection is performed to free up space by eliminating objects that are no longer used.05-07-2009
20090319586NON-DISRUPTIVE FILE SYSTEM ELEMENT RECONFIGURATION ON DISK EXPANSION - An apparatus is operable with a host and a data storage component for controlling expansion of storage, and comprises: an allocating component responsive to a user input for allocating an expanded target storage space to a file system element to thereby make an expanded file system element; a file system metadata component for maintaining file system metadata including metadata for said expanded file system element; a file system I/O component responsive to said file system metadata component for controlling file system I/O between said host and said storage component; and a synchronizing component responsive to said file system metadata component for synchronizing data between a source storage space and said expanded target storage space; wherein said file system I/O component is operable to use said file system metadata component to access said expanded file system element prior to completion of action of said synchronizing component.12-24-2009
20090319585APPLICATION-AWARE AND REMOTE SINGLE INSTANCE DATA MANAGEMENT - A method and system for reducing storage requirements and speeding up storage operations by reducing the storage of redundant data includes receiving a request that identifies one or more files or data objects to which to apply a storage operation. For each file or data object, the storage system determines if the file or data object contains data that matches another file or data object to which the storage operation was previously applied, based on awareness of the application that created the data object. If the data objects do not match, then the storage system performs the storage operation in a usual manner. However, if the data objects do match, then the storage system may avoid performing the storage operation with respect to the particular file or data object.12-24-2009
20090043831Smart Solid State Drive And Method For Handling Critical Files - A method and apparatus for dynamically distributing data to an appropriate storage device based on the significance of the data. In one embodiment the method determines the significance of a data file using the format of the data file. The method also includes identifying a storage device and memory location of the storage device to write the data. In a software implementation, a computer system employs a filter driver and/or a device driver to identify and store data files. In another embodiment, a storage controller includes a state machine that initiates and executes firmware to determine the data file format and also the storage device location.02-12-2009
20090150464APPARATUS AND METHOD FOR MANAGING METADATA IN PORTABLE TERMINAL - A method and apparatus for managing metadata in a portable terminal are provided. The method includes, upon insertion of an external memory, acquiring a unique identifier of an external memory, determining whether a record having information identical to information of a file included in the external memory exists if the unique identifier is identical to a previously stored unique identifier, and reusing metadata included in the record if the record exists.06-11-2009
20090313312Method of Enhancing De-Duplication Impact by Preferential Selection of Master Copy to be Retained - A method and apparatus are provided for enhancing the impact of data de-duplication by preferential selection of the master copy to be retained based on current loads and performance metrics of the storage media devices. The computer system is configured to take as input the identified duplicate copies of data and evaluating their locations in storage devices to determine the cumulative affects of retaining one of the identified duplicate copies as a master copy and optionally allocating a new location if needed. Once a master copy has been designated, the remaining identified duplicate copies are removed from storage.12-17-2009
20090094299Apparatus and method for defragmenting files on a hydrid hard disk - An apparatus and method for defragmenting files on a hybrid hard disk are provided. The apparatus includes a nonvolatile memory located within the hybrid hard disk, a loading unit reading data of a fragmented cluster and temporarily storing the read data in the nonvolatile memory, and a writing unit writing the temporarily stored data in contiguous clusters.04-09-2009
20090144348Variable Length Data Storage Device, Variable Length Data Storage Method, Variable Length Data Reading Method, and a Program for the Same - A variable length data storage device enables clearly and quickly determining where there are breaks in variable length data even when the variable length data is stored without gaps therebetween in a stored data file. A variable length data storage step (S06-04-2009
20090063590Operating System Support of Graceful Degradation for Web Applications - Systems and methods for storing a copy of a web page accessed by the user while the user is online and displaying the web page upon a user request while working offline are described. The web pages may be accessed by the user while working online and automatically copied and stored in the memory. While operating in an offline mode, the user can access any of the web pages that were viewed. When the user is working in offline mode inputs a web page query into the browser, the browser checks if the web page requested is present in the memory. If the webpage exists in the memory, the browser fetches and displays the web page on the browser window. In case the requested web page is not available in the local memory, a message can be displayed on the browser indicating that the requested web page is not available.03-05-2009
20090089343METHOD AND SYSTEM FOR BLOCK ALLOCATION FOR HYBRID DRIVES - A method for priority-based allocation in a storage pool, involving receiving a first request to write a first data item in the storage pool, wherein the storage pool includes a first hybrid drive including a first plurality of metaslabs associated with a first storage type and a second plurality of metaslabs associated with a second storage type, selecting a first target metaslab from the first and second plurality of metaslabs based on a first plurality of allocation priorities, wherein the first plurality of allocation priorities are determined using a storage and power management policy, a storage characteristic, and a power characteristic associated with the first storage type and the second storage type in the first hybrid drive, allocating a first block to the first target metaslab, and writing the first block to the first target metaslab, wherein the first block includes a first portion of the first data item.04-02-2009
20080208936SYSTEM AND METHOD FOR MANAGING MEDIA FOR A PORTABLE MEDIA DEVICE - A method is provided for managing media for a wireless communications device having a memory with media files stored therein. The method comprises the steps of: retrieving information related to the media files stored in the memory of the wireless communications device that are protected; retrieving information related to the media files stored in the memory of the wireless communications device that are flagged; determining space available in the memory of the wireless communications device for replacement media files, the space available including space occupied by the flagged media files but not the protected media files; and generating a selection of replacement media based on the calculated space available on the wireless communications device, the selection of replacement media being chosen from available media stored external to the wireless communications device.08-28-2008
20090292748SYSTEM AND METHOD FOR ENABLING A STORAGE SYSTEM TO SUPPORT MULTIPLE VOLUME FORMATS SIMULTANEOUSLY - A plurality of types of volumes are maintained, a volume being a logical arrangement of storage space on one or more data storage devices. A volume type field is used to designate the type of a particular volume, and a flexible volume paradigm is selected by the volume type field for interpreting data within a data structure written to a data storage device of the one or more data storage devices. A physical volume block number to virtual volume block number mapping pair (pvbn/vvbn pair) is designated by the volume type field, the pvbn/vvbn pair is used to translate a physical volume block number to a virtual volume block number. A request to write a data to a first block of the particular volume is received, a pvbn/vvbn pair is determined. The data is written to the physical block designated by the pvbn/vvbn pair.11-26-2009
20080320062METHOD OF TRANSFERRING FILE SYSTEM, FILE SYSTEM TRANSFERENCE PROGRAM, AND FILE SYSTEM TRANSFERENCE DEVICE - It is an object of the present invention to realize the transference of a file system without moving data. A transference source file system outputs to a device driver a physical block number included in extent information. A transference driver intercepts an I/O request to the device driver, and obtains a physical block number of the I/O destination. A transference tool obtains a physical block number from the transference driver, and outputs the physical block number to the transference destination file system in order to realize the transference of a file system.12-25-2008
20090287751METHOD AND SYSTEM FOR FILE RELOCATION - A method and system for file relocation is provided. A file relocation system is connected to multiple storage devices. The system obtains a number of times that each of a number of files stored on the multiple storage devices is requested simultaneously with a concerned file. The relocation system then classifies multiple files into multiple groups, such that groups of files simultaneously are put together into one group. Multiple files classified in to the same group are then relocated to a single storage device. The relocation system then switches a storage device not accessed for a certain period of time into a power-saving mode.11-19-2009
20090119353SOLID STATE MEMORY (SSM), COMPUTER SYSTEM INCLUDING AN SSM, AND METHOD OF OPERATING AN SSM - In one aspect, a determination is made as whether partition metadata of a solid state memory has changed, and if so, the partition metadata is analyzed to locate invalid data stored in the solid state memory. This analysis may include determining that a file system type of a partition has changed, and invalidating data in response to the changed file system type. Alternately, or in addition, the analysis may include determining that a partition has changed, and invalidating data in response to the changed partition.05-07-2009
20080243960DETERMINISTIC FILE CONTENT GENERATION OF SEED-BASED FILES - A method for deterministic file content generation of seed based files is comprised of extracting a seed value from a seeded file signature, passing the seed value to a seeded content generating function to produce a set of generated content, and appending the set of generated content to the seed file signature to produce a seed-based file. A delta offset may also be included in the seeded file signature, the delta offset indicating where modified content is to be substituted within the generated content.10-02-2008
20080243963Quota Enforcement With Transacted File Systems - Aspects of the subject matter described herein relate enforcing quotas in transactional file systems. In aspects, a filter monitors operations that may affect quota usage/charge of a file system object having a quota allotment. In doing so, the filter determines a quota value outside of any transaction for the object and a quota value associated with at least one transaction affecting the object. The filter receives a request that involves the use of additional quota. The filter then determines whether to allow or fail the request depending on whether enough quota is available to satisfy the request.10-02-2008
20080243961Method And Apparatus For Adding A Database Partition - A data repository system and method are provided. A method in accordance with an embodiment includes an operation that can be used to port data from one or more existing database partitions to new database partitions according to a minimally progressive hash. The method can be used to increase the overall size of databases while a system runs hot, with little or no downtime.10-02-2008
20090265401Method, System and Computer Program Product for Shrinking a File System - Computer implemented method, system and computer program product for shrinking a file system in a data processing system. A computer implemented method for shrinking a file system in a data processing system includes designating an amount by which a file system comprised of a plurality of contiguous blocks is to be shrunk, and removing at least one contiguous intermediate block of the plurality of contiguous blocks from the file system to shrink the file system by the designated amount.10-22-2009
20090265400EXTENSIBLE FILE SYSTEM - An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries.10-22-2009
20090265399SPACE RECOVERY WITH STORAGE MANAGEMENT COUPLED WITH A DEDUPLICATING STORAGE SYSTEM - Provided are techniques for space recovery with storage management coupled with a deduplicating storage system. A notification is received that one or more data objects have been logically deleted by deleting metadata about the one or more data objects, wherein the notification provides storage locations within one or more logical storage volumes corresponding to the deleted one or more data objects, wherein each of the one or more data objects are divided into one or more extents. In response to determining that a sparse file represents the one or more logical storage volumes, physical space is deallocated by nulling out space in the sparse file corresponding to each of the one or more extents.10-22-2009
20090265398Adaptive Buffering of Database Server Response Data - Aspects of the subject matter described herein relate to buffering database server response data. In aspects, a database driver receives a request for data from a requester such as an application. Based on the request and information associated with a query, the database driver determines whether the requester is allowed to obtain data that has been previously buffered. If the database driver determines that the requester is not allowed to obtain data that has been previously buffered, the database driver indicates that blocks corresponding to the data may be freed. The database driver obtains new blocks from the database when they are needed. The database driver may determine whether to free blocks depending on a mode in which the blocks are accessed. When blocks are requested in a stream mode, they may be discarded once provided to a requester unless a bookmark has been set.10-22-2009
20090265397APPARATUS AND METHOD FOR PARTITIONING DATA BLOCKS - A method and apparatus for increasing the speed at which a block of data can be partitioning into variable-length subblocks is provided. The method combines a relatively high-speed partitioning algorithm (that can only partition a block into relatively small mean-length subblocks) with a relatively low-speed algorithm (that can partition a block into subblocks of any mean length) to yield a relatively high-speed partitioning algorithm that can partition blocks into subblocks of any mean-length.10-22-2009
20080281883SYSTEM AND PROGRAM FOR STORING DATA FOR RETRIEVAL AND TRANSFER - Provided is a method, system and program for storing data for later retrieval and for transfer within a storage hierarchy. A data storage subsystem stores both individual user files and also managed files, each managed file comprising an aggregation of multiple user files. After receiving user files from a client station, the subsystem stores user files in a retrieval storage pool to facilitate file retrieval. Criteria are subsequently applied to the user files stored in the retrieval storage pool to delete low or lower priority files from the retrieval storage pool. In addition, user files are aggregated in managed files for transfer to another location within the storage hierarchy.11-13-2008
20080288564METHOD AND SYSTEM FOR CREATING SNAPSHOTS BY CONDITION - A data management method in a storage device system having a control device connected to a computer, and a storage device connected to the control device. The control device saves data stored in an area corresponding to a write request, and then writes the data to the area specified in the write request in accordance with the write request, if a file corresponding to the write request is a file meeting the conditions included in the request. Alternatively, the control device writes the data to the area corresponding to the write request in accordance with the write request, if a file corresponding to the write request is not a file meeting the conditions.11-20-2008
20080288562Interactive storage meter for a storage container - An interactive, meter-type graphical user interface (“GUI”) visually illustrates how the storage capacity of a physical or logical storage container is consumed by a number of items. Examples of items include physical units, logical units, or files of digital content. The items are arranged into a number of logical groups (each group including zero or more items) in accordance with user-selectable grouping criteria. The GUI displays group indicators in a manner that illustrates the relative amount of storage capacity consumed by each group (with respect to either total storage capacity or consumed storage capacity), and optionally by the individual items within each group. The GUI may also facilitate user manipulation of the items associated with each of the displayed groups, or suggest to the user how the unused storage capacity of a particular storage container may be consumed.11-20-2008
20080281884DISK BLOCKING STREAMING - A method for executing on a local user system a body of computer-executable code that resides on a provider system is described. A modified image of the computer executable code is installed to a virtual disk on the local user system, the modified image comprising file structure information. The installing comprises creating each of the local files to the virtual disk with null data, wherein upon installation of the modified image, a plurality of disk blocks assigned to the local files contain a null indicator and do not contain any processable content. A streaming control module senses a request to access the virtual disk, determines whether streaming is indicated to satisfy the request, and transfers to the user system the processable content corresponding to the requested disk block. Streaming is indicated when the request corresponds to one of the disk blocks that does not contain any processable content.11-13-2008
20080275928FLEXIBLE DATA STORAGE SYSTEM - Methods and systems for managing and locating available storage space in a system comprising data files stored in a plurality of storage devices and configured in accordance with various data storage schemes (mirroring, striping and parity-striping). A mapping table associated with each of the plurality of storage devices is used to determine the available locations and amount of available space in the storage devices. The data storage schemes for one or more of the stored data files are changed to a basic storage mode when the size of a new data file configured in accordance with an assigned data storage scheme exceeds the amount of available space. The configured new data file is stored in accordance with the assigned data storage scheme in one or more of the available locations and the locations of the new data file are recorded.11-06-2008
20080320061DATA STORAGE SPACE RECOVERY SYSTEM AND METHOD - A process of determining explicitly free data space in computer data storage systems with implicitly allocated data space through the use of information provided by a hosting computer system with knowledge of what space allocated is currently being used at the time of a query, is provided. In one embodiment, a File System (“FS”) is asked to identify clusters no longer in use which is then mapped to physical disks as visible to an Operating System (“OS”). The physical disks are mapped to simulated/virtualized volumes presented by a storage subsystem. By using server information regarding the FS, for those pages that are no longer in use, point in time copy (“PITC”) pages are marked for future PITC and will not be coalesced forward, thereby saving significant storage.12-25-2008
20080313246INTERVAL PARTITIONING - A method and apparatus for managing data in a partitioned data storage space is provided. Data referencing a new data item to be stored in the data storage space is received. It is determined that the data item does not pertain to any previously created partition. In response to the determination, a new partition is automatically created in the data storage space. The partition is mapped to a new set of values, such as to a next unpartitioned interval of dates or numbers.12-18-2008
20080235302TRANSPARENT ALLOCATION OF A UNIQUE PER USER/TMP FS - The invention is directed to the transparent allocation of a unique per user /tmp file system. A method in accordance with an embodiment of the present invention includes: manipulating an operating system to provide each user with a private temporary file system; and constraining a process of the user to the user's private temporary file system.09-25-2008
20080235301FREE SPACE MANAGEMENT - An attribute is associated with one or more files stored on a storage medium, wherein the attribute is indicative to software utilized by a processor to access the files that the files are deletable. One or more files associated with the attribute can be deleted. Files can be deleted, for example, based upon receipt of a request for file system space. A sufficient amount of free space can be created to fulfill the request via the deletion of the one or more files associated with the attribute. A history of accesses to the files can be maintained and a least recently accessed file, associated with the attribute, can be deleted. Files can also be deleted according to a priority included in the attribute.09-25-2008
20080243964DYNAMIC ALLOCATION OF PROGRAM LIBRARIES - A method of dynamic allocation of program libraries to an application server is provided. In addition to a static allocation of libraries to the server at initialization time, libraries can be added to or removed from the set available to a server while that server is active. New libraries are created as resource objects specifying a set of locations from which programs can be loaded. Each library is allocated a ranking which the system can use to identify its place in the loader's search order relative to other libraries. New library resources are dynamically installed and added to a list of available libraries, including the system's pre-defined library of locations, in a position in the loader's search order determined in accordance with the allocated ranking.10-02-2008
20080228843Filesystem having a filename cache - A system comprising a processor, a data storage device that is accessible by the processor, and filesystem software that is executable by the processor to organize files on the data storage device are provided. The filesystem software is executable to maintain a filename cache having variable size filename entries. The filename entries may include a filename header section and a name section storing an entire filename of a corresponding file.09-18-2008
20090089344Network accessed storage files system query/set proxy service for a storage virtualization system - A system and method provides for querying and setting file attributes between Network File System and Common Internet File System network attached storage systems. Aspects of the present invention may be performed by a storage virtualization system that acts as an intermediary between one or more network attached storage systems. By querying and setting file attributes, files may be migrated between network attached storage systems while keeping the file attributes and primary location of the file contents intact. In addition, the present invention provides an additional aspect of ensuring that file names of multi-protocol files are compatible across every protocol.04-02-2009
20090125572METHOD FOR MANAGING RETENTION OF DATA ON WORM DISK MEDIA BASED ON EVENT NOTIFICATION - The present invention provides for a method and a computer system for managing the retention of data on WORM disk media employing an event-based scheme of retaining data. The protection of the files is accomplished by establishing a retention period for the WORM disk media file volume containing the data files, followed by a reclamation period. The retention and reclamation periods are managed by comparing the amount of reclaimable space on the file volume to a threshold value, and if the threshold is not exceeded, the retention period of the file volume is extended by a default retention extension value. If the threshold value is exceeded, the files are moved to another file volume, and the retention period of this target file volume is extended based on the longer of the default retention extension value and the latest expiration date of the file contained within the file volume.05-14-2009
20090164537METHOD FOR STORING FILE PATHS AND FILE NAMES - A computer-implemented method for storing file paths and file names is disclosed. The method includes creating a path table, creating a file table, receiving a file ID sent from an application, and obtaining a file name, a length of the file name, and a directory ID corresponding to the file from the file table according to the file ID. The method further includes obtaining a file path from the path table according to the directory ID corresponding to the file, merging the file path and the file name so as to generate a merged character string, and sending the merged character string, a length of the file path and a length of the file name to the application for assigning storage space for the file based on the length of the file path and the file name.06-25-2009
20090164536Using The LUN Type For Storage Allocation - In an embodiment of the invention, an apparatus uses a LUN (logical unit number) data type for storage allocation. The apparatus includes a storage appliance that specifies a LUN data type for a LUN. The storage appliance then allocates data blocks in the LUN based on the LUN data type. The storage appliance allocates data blocks in the LUN as contiguous data blocks or as non-contiguous data blocks, based on the LUN data type. The LUN data type may be, for example, database data type, user data type, or binary data type.06-25-2009
20090164538DATA STORAGE APPARATUS AND INITIALIZATION METHOD THEREOF - A data storage apparatus comprises a USB connector, a USB control circuit, a flash controller, and a flash memory. After the process of formatting the data storage apparatus by a host device, the flash controller forcibly rewrites FAT number data recorded in a bios parameter block area from ‘2’ to ‘1’ at the time of restoration of power supply. Such rewriting of the FAT number data causes the host device to identify the presence of only one FAT area. This arrangement desirably improves the data writing efficiency of the data storage apparatus configured to generate multiple management tables in the formatting process by the host device.06-25-2009
20090164539CONTIGUOUS FILE ALLOCATION IN AN EXTENSIBLE FILE SYSTEM - Disclosed is a method for creating and reading a contiguous file in an extensible file system. During the creation of a file on the storage media, the file system format check the bitmap to determine if there are areas of free space on the media that would permit the storage of the file in a contiguous manner. By storing the file in a contiguous manner the file may later be read without resorting to the file allocation table, because the file itself would not be fragmented on the storage media. Once an area of free space has been identified, the file is written to the media in a contiguous manner. Further, an associated entry for the file in the directory entry is updated or created to indicate that the file is a contiguous file and also provides basic parameters necessary to read the file without resorting to accessing the file allocation table.06-25-2009
20090177721Management of quality of services in storage systems - A plurality of data elements are stored on storage devices in a storage system and are identified by unique identifiers. Each data element has management information associated therewith for enabling management of a quality of service of each data element individually. The management information is individually changeable for each data element for changing the quality of service of each data element individually without affecting the quality of service of others of the data elements. The quality of service of a particular data element can be changed as a result of the storage system receiving a WRITE request sent to the storage system, the WRITE request being directed to a virtual metadata file corresponding to the particular data element and specifying a new quality of service for the particular data element or specifying custom metadata for the particular data element.07-09-2009
20090327369METHOD AND APPARATUS FOR MULTI-FORMAT DATA EXCHANGE - Multi-format file transfer can be accomplished, without the need for storing files in each of a plurality of formats, by linking a plurality asset-containing first folders (12-31-2009
20090327370DEFRAGMENTATION OF DIGITAL STORAGE MEDIA - The invention concerns a technique for defragmenting digital storage media (disks). The invention is based on a filter driver or corresponding technology receiving all I/O to and/or from the file system driver, and which by itself is able to send I/O requests to the file system driver FIG. 12-31-2009
20090327368Dynamic Write Balancing in a Data Storage System - Available storage locations are identified by searching through a free blocks object non-sequentially. The free blocks object may be logically divided into sections, and the sections may be searched non-sequentially. Each section may be logically divided into a number of sub-sections, and the sub-sections of the various sections may be searched non-sequentially. A new section may be added to the free blocks object, and the added section may be searched until a predetermined threshold or condition is reached, at which point non-sequential searching may begin or resume.12-31-2009
20090055450MEASURING FRAGMENTATION ON DIRECT ACCESS STORAGE DEVICES AND DEFRAGMENTATION THEREOF - A method for determining file fragmentation and performing subsequent defragmentation, including measuring a file fragmentation factor, measuring a file extent distance factor, measuring a file fragmentation level, selecting a file stored as multiple extents on at least one disk, selecting a free space extent on the disk whose length most closely matches the length of the file, calculating a fragmentation level of the disk from a fragmentation factor and a file extent distance factor of free space extents or allocated space extents of the disk, calculating the effect that moving the file to the free space extent would have on the fragmentation level, and moving the file to the free space extent provided that doing so causes the fragmentation level to satisfy a criterion.02-26-2009
20090024678OPTIMIZING STORAGE ALLOCATION - There is provided a method, a system and a machine readable medium to optimize storage allocation in a database management system. The method comprises receiving a processing step at a step processing module of an access module processor from a dispatcher module. The method further comprises determining whether a fast access storage flag is set in the processing step, the fast access storage flag indicating use of an intermediate file in fast access storage to store one or more redistributed data rows of a table of a database that is distributed across one or more storage devices of the database management system; Yet further the method comprises selectively allocating a free fast access storage data block to the intermediate file from a fast access storage pool based on the determination that the fast access storage flag is set. Lastly, the method comprises writing a redistributed data row from the one or more redistributed data rows to the allocated fast access storage data block.01-22-2009
20090055451Systems and Methods For Providing Redundant Data Storage - Embodiments of systems, methods, and computer-readable media for providing redundant data storage are disclosed. For example, one embodiment of the present invention is a method including the steps of receiving a first signal comprising a request to store a file; generating a plurality of data blocks comprising portions of the file; computing a plurality of parity blocks based at least in part on the plurality of data blocks; and transmitting at least some of the plurality of data blocks and at least some of the plurality of parity blocks to a channel unit. In another embodiment, a computer-readable media comprises code for a carrying out such a method.02-26-2009
20090083346CANCELLATION OF INDIVIDUAL LOGICAL VOLUMES IN PREMIGRATION CHAINS - Provided are techniques for cancellation of premigration of a member in a chain. A set of premigration messages are received, wherein a separate premigration message is received for each logical volume in a chain of logical volumes. While processing the premigration messages in order of receipt of each of the premigration messages, a cancel message indicating that premigration of a logical volume in the chain is to be cancelled is received. In response to determining that the logical volume whose premigration is to be cancelled has not already been transferred to physical storage media, premigration of the logical volume is cancelled by removing a premigration message for that logical volume from the set of premigration messages and premigration of each other logical volume in the chain of logical volumes is continued in order of receipt.03-26-2009
20080263113Storage System and Method - A storage system comprising apparatus for consolidating portions of free space from a plurality of remote storage units; and apparatus for presenting the consolidated portions as a single file system.10-23-2008
20090204653APPARATUS HAVING DATA INSTALLED AND METHOD OF UPGRADING DATA - In an apparatus having data installed therein, the apparatus includes a data storage part for storing a (n+1)th-order file obtained by bundling an nth-order file and (n+1)th data corresponding to an (n+1)th function level into one file, wherein n is an integer, an identifier storage part for storing an identifier indicating a function level of data to be installed in the apparatus, and a controller for detecting the function level based on the identifier stored in the identifier storage part, de-bundling the (n+1)th-order file stored in the data storage unit as many as times corresponding to the function level, and applying the de-bundled data to the apparatus.08-13-2009
20090210465COMPARING PROCESS SIZES - A system to compare process sizes is described. In one example embodiment, the system comprises memory and one or more processing devices. The memory may be configured to store executable instructions. The one or more processing devices may be configured to execute the instructions. The instructions may cause the one or more processing devices to generate a first process that corresponds to an activity, generate data objects that correspond to the elements associated with the activity, and identify a number of data objects associated with the first process. The one or more processing devices may further obtain a reference size for the first process based on the number of data objects and compare the reference size for the first process with the reference size for another process.08-20-2009
20090210464STORAGE MANAGEMENT SYSTEM AND METHOD THEREOF - A storage management system includes a storage unit with first and second partitions with consecutive physical addresses. The control unit manages the storage unit and has a measurement unit, arrangement unit, and reallocation unit. The arrangement unit arranges currently stored files in the two partitions. The measurement unit measures the file, the free space of the two partitions, a difference between the file size and the free space of the second partition, and determines whether the free space of the second partition is sufficient to store the file. The reallocation unit shares the free space from the first partition to the second partition.08-20-2009
20090222500Information storage device and method capable of hiding confidential files - The present invention is to provide a method implemented to an information storage device comprising a storage unit and a secret chamber management unit, wherein the storage unit is connected with a computer device through the secret chamber management unit for allowing the computer device to obtain a storage capacity of the storage unit. The secret chamber management unit sets an access authority selectively over the entirety or a part of the storage unit and formats the storage unit according to a command and a password inputted by a user, so as to create at least one physical open storage area and at least one physical hidden storage area in the storage unit. In addition, an allocation management area is defined in the secret chamber management unit or the storage unit for storing management information related to the open storage area and the hidden storage area.09-03-2009
20090240750MEMORY SYSTEM AND DATA ACCESS METHOD - Disclosed is a memory system including a storage device such a hard disk or flash memory, and an access method. The memory system includes: a storage device storing metadata; a file system generating and managing abstract data associated with the metadata; and a cache memory temporarily storing the abstract data. The file system accesses the metadata of the storage device with reference to the abstract data stored in the cache memory.09-24-2009
20090240749DATA STORAGE SYSTEM, DATA STORAGE APPARATUS, AND COMPUTER READABLE MEDIUM - A data storage system, apparatus, and computer readable medium are provided. The data storage system includes a storage which stores keywords including a character; data file receiver which receives a data file; a keyword specifier that specifies a keyword group including a keyword that is commonly included in both the keywords and the data file; a display which outputs the keyword group; a selector which selects a keyword from the keyword group; and data file storage which stores the data file in a folder whose folder name is generated based on the selected keyword.09-24-2009
20090254595Data Storage Method and Related Device for an Electronic Device - In order to prevent memory cells from being damaged, the present invention provides a data storage method for an electronic device including dividing a first section of a memory of the electronic device into N blocks, wherein the N blocks is a sequence of blocks from the first block to the Nth block and each block is assigned an index value, rewriting the index value corresponding to the nth block according to index values of the N blocks, and storing an input data in the nth block, wherein N is an integer greater than 1, and 1≦n≦N.10-08-2009
20090248765SYSTEMS AND METHODS FOR A READ ONLY MODE FOR A PORTION OF A STORAGE SYSTEM - In general, embodiments of the invention relate to reading data from and writing data to a storage system. Specifically, embodiments of the invention relate to a read only mode for a portion of a storage system. In one embodiment, a selective read-only mode for a portion of a storage system is implemented by monitoring a condition that affects a subset of persistent storage in a storage system, by detecting the condition, by entering a read-only mode for the subset, and by enforcing a policy of processing write requests and read requests to the storage system, which includes processing the write requests without modifying user data stored on the subset and processing the read requests, including requests for user data stored on the subset.10-01-2009
20090248764Implementing Dynamic Processor Allocation Based Upon Data Density - Dynamic processor allocation is implemented based upon bitmap data density. A bitmap index is used to process the query. A bitmap is created for the query. The bitmap is partitioned into single I/O operations. A variable partition size is provided based upon data density. Data density for each partition is calculated. Processors are assigned based upon data density of each partition. Then the partitions are processed and query results are returned.10-01-2009
20080215645SYSTEMS AND DEVICES FOR PERSONALIZED RENDERING OF DIGITAL MEDIA CONTENT - Systems and methods are disclosed for providing devices capable of the reception and playback of one or more crafted media channels transmitted over an intermittent connection. The one or more channels may be customized by the end user to bias the programming towards individual tastes or moods. The channels may be delivered over an intermittent, unidirectional link, for example a Satellite Radio receiver in a home or car. Content may also be delivered over an intermittent, bidirectional link, for example to a portable media player via a wireless 802.11 or other networked connection.09-04-2008
20080215646EXTENSIBLE FILE SYSTEM - An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries.09-04-2008
20080301206Efficient Data Transfer To/From Storage Medium of Computing Device - An application issues an application command to a file system of the computing device, where the application command includes a location of data at a source. The file system allocates space on a medium for the data and compiles a list including an identification of each portion of the medium that is to be used to store the data. The file system then issues a file system command to a block driver of the medium, where the file system command includes the location of the data at the source and the compiled list. The block driver contacts the source, requests the data at the location thereof, and writes the data to the portions of the medium included in the compiled list.12-04-2008
20090063589APPARATUS AND METHOD TO DECOUPLE LARGE OBJECT DATA PROCESSING FROM MAIN-LINE DATA PROCESSING IN A SHARED-NOTHING ARCHITECTURE - An apparatus and method to to decouple large object (“LOB”) data processing from main-line data processing in a shared-nothing architecture. The method may include relocating rows in a database table from a source partition to a target partition, where each row stores a source descriptor identifying a LOB associated with the row. The source descriptors may be read, and space sufficient to store each LOB in a target repository may be allocated accordingly. Source descriptors may be extracted from the rows, and sorted according to the location of the LOBs in the source repository to provide an ordered retrieval sequence. Each LOB may be retrieved from the source repository according to the retrieval sequence, and stored in its allocated space. The source descriptor stored in each row in the target partition may then be replaced with a target descriptor to identify the location of the respective LOB in the target repository.03-05-2009
20090043833METHOD AND APPARATUS FOR STORING DATA IN MOBILE TERMINAL - An apparatus and method for storing an image in a storage folder corresponding to a file name in a mobile terminal are provided. The method includes detecting a keyword by analyzing a file name of data to be stored, and storing the data in a storage folder corresponding to the keyword.02-12-2009
20090276477METHOD OF PARTITIONING A DATABASE - The invention is directed towards a method of partitioning data in a database. The database is configured to be accessed by an entity. The method comprises the steps of defining a first partition within the database, defining a second partition within the database and assigning selected data in the database to the first partition and the second partition, wherein data assigned to both the first partition and the second partition may only be accessed by an entity assigned to both said first partition and said second partition.11-05-2009
20090327367Common Block Storage Infrastructure - Common block storage infrastructure techniques are described in which files are created through interaction with a file system to reserve extents in a volume on behalf of volume storage drivers, which may form a driver stack that resides logically on top of the volume. The files protect the reserved extents within the volume for use by the volume storage drivers, such as to store metadata related to operations performed by the drivers. When reserved extents are created, a location of the reserved extents is communicated through the driver stack to a corresponding volume storage driver. Volume storage drivers may also be configured to discover their corresponding reserved extents and communicate these to upper-level drivers and components. Accordingly, when a volume storage driver manipulates data in the volume, it may do so with awareness of the reserved extents of the other volume storage drivers.12-31-2009
20090144346PARTITIONING AND REPARTITIONING FOR DATA PARALLEL OPERATIONS - A query that identifies an input data source is rewritten to contain data parallel operations that include partitioning and merging. The input data source is partitioned into a plurality of initial partitions. A parallel repartitioning operation is performed on the initial partitions to generate a plurality of secondary partitions. A parallel execution of the query is performed using the secondary partitions to generate a plurality of output sets. The plurality of output sets are merged into a merged output set.06-04-2009
20090019098FILE SYSTEM MOUNTING IN A CLUSTERED FILE SYSTEM - A method effectively preventing a requesting node from unfencing and mounting a file system subsequent to a failure in a cluster file system having a plurality of active nodes. The method comprising first upgrading one active node in the cluster to function as a cluster manager node. The cluster manager is in communication with all nodes. The cluster manager is assigned manager responsibilities, in part, comprising first receiving an active status request from the node requesting to mount a file system. The cluster manager first queries the quorum nodes to determine whether each node considers the cluster manager to still have cluster management responsibilities for the file system. If a majority of quorum nodes consider the cluster manager to still have cluster management responsibilities for the file system then the cluster manager responds to the requesting node's active status request. Thereafter, the requesting node proceeds with mounting the file system.01-15-2009
20090019097SYSTEM AND METHOD FOR MEMORY ALLOCATION MANAGEMENT - A memory manager for a system, a system that includes the memory manager and a method of using thereof are provided. The memory manager manages memory allocations in at least a memory. The memory manger comprises, a first unit configured for receiving a plurality of requests from one or more components of one or more applications of a system. The memory manager also includes a second unit configured for optimizing memory allocations for the plurality of requests.01-15-2009
20090112951APPARATUS AND METHOD OF MANAGING FILES AND MEMORY DEVICE - A system and method of managing files and a memory device are provided. The system for managing files includes an attribute-management module designating nested attributes to the files having a size smaller than a basic allocation unit of a file system or to directories to which the files belong, a data-management module adjacently nesting the files to which the nested attributes are designated by the attribute-management module with no empty space between the files, and a metadata-management module writing start offsets of the files nested by the data-management module in metadata of the files.04-30-2009
20090112950FILE MANAGEMENT DEVICE AND STORAGE DEVICE - A file system management device is connectable to a storage device. The storage device includes a first file system entity created according to a first file system in which a second file system entity created according to a second file system is allowed to be mapped. A mapping information storing area is defined on a predetermined area of the first file system entity, and the mapping information storing area is reserved for storing mapping information indicating a correspondence of the mapping. The file system management device includes an accessing unit configured to access the second file system entity based on the mapping information through a process according to the first file system to the first file system entity.04-30-2009
20090112949COMPRESSED STORAGE MANAGEMENT - In accordance with one or more aspects, compressed storage management in a system includes determining which of multiple data units stored in an uncompressed portion of the storage resource are to be compressed and stored in a compressed portion of the storage resource. The management can further include returning one or more regions of the compressed portion for use in the uncompressed portion in response to storage resource pressure in the system, as well as compacting regions in the compressed portion to fill empty gaps in the compressed portion.04-30-2009
20080270493SYSTEM FOR AUTOMATICALLY REPLICATING A CUSTOMER'S PERSONALIZED COMPUTER SYSTEM IMAGE ON A NEW COMPUTER SYSTEM - The Computer Image Replication System automatically replicates a customer's computer system image, including all of the customer's data, programs, device drivers, program preferences, personalizations, and file directory structures on a new computer system. The Computer Image Replication System is part of a Data Shadowing System which comprises a memory module that is connected to a monitored computer system via an existing communication medium, such as an input/output port, to store the shadowed data. The memory module includes a memory device for data storage, as well as software, including a control software component that is automatically installed on the monitored computer system when the memory module is first connected to the monitored computer system, as well as associated module software for maintaining a record of the data stored on the memory device and controlling the operation of the memory device.10-30-2008
20080243962Method and apparatus for providing and managing a virtual storage namespace - The namespace of file system objects in a storage system includes a namespace table for maintaining virtual namespaces for each client computer. The storage system maintains an information holding a correspondence between real names for file system objects and virtual names for the file system objects. The virtual names are registered in the information according to individual client computers in communication with the storage system. When the storage system receives an operation request from a client computer, the storage system determines whether the operation request includes a virtual name a file system object that is a target of the operation request. The storage system replaces the virtual name in the operation request with a corresponding real name by referring to the information and an ID of the client computer that sent the operation request. The operation is carried out using the real name in place of the virtual name.10-02-2008
20090106334Method and apparatus for relocating an active file system journal - Relocating a file system journal within a partitioned memory space is described. In one embodiment, a method, which involves relocating an active file system journal, includes writing the changes for relocating the metadata structures into the new file system journal before the file system journal is activated so that journaling remains active during relocation and the corresponding file system remains consistent throughout the relocation.04-23-2009
20090037499METHOD AND MECHANISM FOR IMPLEMENTING DYNAMIC SPACE MANAGEMENT FOR LARGE OBJECTS - Disclosed is a system and method for implementing space management for large objects stored in the computing system. According to some approaches, storage of large objects are managed by dynamically creating contiguous chunks of storage space of varying lengths. The length of each chunk may vary depending upon object size being stored, fragmentation of the storage space, available free space, and/or expected length of the object.02-05-2009
20090037498IN-MEMORY SPACE MANAGEMENT FOR DATABASE SYSTEMS - A framework for in-memory space management for content management database systems is provided. A per-instance in-memory dispenser is partitioned. An incoming transaction takes a latch on a partition and obtains sufficient block usage to perform and complete the transaction. Generating redo information is decoupled from transaction level processing and, instead, is performed when block requests are loaded into the in-memory dispenser or synced therefrom to a per-instance on-disk structure.02-05-2009
20090144347STORAGE VOLUME SPANNING WITH INTELLIGENT FILE PLACEMENT AND/OR REARRANGEMENT - In some embodiments a determination is made as to whether a file is to be placed on a slower drive of a logical storage volume span or a faster drive of the logical storage volume span. The file is placed on the slower drive or the faster drive based on the determining, and a user does not need to be aware of whether the file has been placed on the slower drive or the faster drive. Other embodiments are described and claimed.06-04-2009
20090063591APPARATUS, SYSTEM, AND METHOD FOR DETERMINISTIC FILE ALLOCATIONS FOR PARALLEL OPERATIONS - An apparatus, system, and method for determining the maximum supported degree of parallel sort operations in a multi-processor computing environment. An allocation module allocates a minimum number of sort files to a sort operation for each data source that participates in the parallel sort. The allocation module attempts to allocate sort files of one-half the sort operation data source file size, and iteratively reduces the sort file size requests in response to determinations that sort files of the requested size are not available. After allocation, a parallel operation module determines whether there is sufficient virtual storage to execute the sort operations in parallel. If there is not, the parallel operations module collapses the two smallest sort operations, thereby reducing the degree of parallelism by one, and repeats the request. The parallel operation module repeats the process until the sorts are executed or the process fails for lack of virtual storage.03-05-2009
20090063593SEMICONDUCTOR MEMORY DEVICE AND OPERATION METHOD THEREOF - A semiconductor memory device comprises an input unit inputting an address and data; a storage unit storing data and a FAT; an address conversion unit converting the address; an access unit accessing the storage unit according to the converted address; a detection unit detecting a format of the FAT; and an alteration unit altering conversion rules in the address conversion unit according to the detection.03-05-2009
20100023566Method for Allocating Logical Unit Inside Storage System to Logical Volume and Storage Controller - A storage controller comprises a creation module that creates a logical volume, a management module that manages a plurality of types of logical units inside a storage system, a measurement module that measures an access characteristic, which is a characteristic related to an access to the logical volume, a decision module that decides the type of a logical unit to be allocated to the logical volume based on the measured access characteristic, and an allocation module that allocates to the logical volume a logical unit, of the plurality of types of logical units, of the type decided by the decision module.01-28-2010
20090100115Methods and Apparatus for File Management Using Partitioned File Metadata - Management of files in a memory, such as a flash memory, includes storing in the memory a first node including a first type of metadata of the file, a second node including data of the file and a third node including a second type of metadata of the file including file status and memory location information for the first and second nodes. The third node may include a node including memory location information for the second node and a node including an index table that cross-references a memory location for the memory location information for the second node to a memory location of the first node. Methods and devices may be provided.04-16-2009
20100023567RECORDING DEVICE - In the case of recording pieces of cache data stored in a cache information management unit 01-28-2010
20100017446File system configuration method and apparatus for data security and for accessing same, and storage device accessed by same - Provided are a file system configuration method and apparatus for data security, a method and apparatus for accessing a data security area formed by the same, and a data storage device accessed by the same. A method of configuring a file system comprising a general area in which general data is stored and a security area in which security data is stored, in a storage device, includes generating a first file system format corresponding to the general area to store the first file system format in a buffer; generating a second file system format corresponding to the security area and storing the second file system format in the buffer so as to allow an authorized user to read data stored in the general area and not to allow the authorized user to write data to the general area when the authorized user accesses the security area; and configuring the file system of the storage device by using the first and second file system formats stored in the buffer.01-21-2010
20090254594TECHNIQUES TO ENHANCE DATABASE PERFORMANCE - Techniques to enhance database performance are described. An apparatus may comprise an enhanced DBMS arranged to manage storage operations for tree data structures in a storage component. The enhanced DBMS may comprise a defragment detector module operative to identify a tree data structure as having a sequential data retrieval pattern. The enhanced DBMS may also comprise a defragment decision module communicatively coupled to the defragment detector module, the defragment decision module operative to determine whether to defragment the tree data structure, and output a defragment signal. The enhanced DBMS may further comprise a defragment manager module communicatively coupled to the defragment decision module, the defragment manager module operative to defragment the tree data structure in accordance with the defragment signal to reduce input/output operations for the storage component. Other embodiments are described and claimed.10-08-2009
20090216818METHOD AND APPARATUS FOR MANAGING FOLDER - A method and apparatus for managing a folder is provided. The method includes: setting a drive correspondence table showing a correspondence relation of first location information including location information of an apparent drive allocated to the folder in the operating system and second location information including location information of a target drive to be actually allocated to the folder; and changing, in response to a request for an access to the folder requested by the operating system, location information allocated to the folder from the first location information of the apparent drive allocated to the folder to the second location information of the target drive allocated to the folder in accordance with the drive correspondence table without notifying the operating system of a change of location information of the drive allocated to the folder, whereby enabling the operating system to consequently access the folder in the target drive.08-27-2009
20090216817SYSTEM AND METHOD FOR UTILIZING GENERATIONAL FILE NAMES FOR DIAGNOSTIC DATA FILES - A system and associated method for utilizing file names for diagnostic data files generated by a runtime environment. The method employs a file counter base that defines a predefined maximum number of files permitted in a file system, a generation number that indicates an instance of the runtime environment, and a file counter that comprises a file name. The file counter circulates by a cycle equal to the file counter base such that the file system uses only a limited disk space. The method determines the generation number per instance of the runtime environment by examining file counters of existing files in the file system. The generation number initializes the file counter for creating file names in the instance of the runtime environment. The method guarantees a longest life span of a diagnostic data file in a file system that has a limited number of files.08-27-2009
20100057791METHODS FOR IMPROVING FILE SYSTEM PERFORMANCE - Techniques for managing inodes of a file system are described herein. According to one embodiment, in response to a request received at the file system for committing a file to a storage, a first indirect block having multiple entries is allocated. At least one entry stores a pointer linked with a data block, where the first indirect block is referenced by a pointer stored within an inode associated with the file. A first set of data blocks having a first predetermined number of data blocks is allocated, where each entry is referenced by a pointer stored in an entry of the first indirect block. The first indirect block and the first set of data blocks are contiguous blocks with respect to each other, such that content of the first indirect block and the first set of data blocks can be retrieved via a single storage access operation.03-04-2010
20090282091FILE SYSTEM AND DATA MANAGEMENT METHOD - A file system includes: a data controller that inverts logic of input data to convert the input data into accumulation data; a nonvolatile storage that has storage areas in which the accumulation data is stored and a table section to which use states of the storage areas are written; and a controller that controls the nonvolatile storage so as to store the accumulation data in the storage areas in accordance with the use states written to the table section.11-12-2009
20080256148Computer system and a method of assigning a storage device to a computer - A computer system which has a plurality of computers and a storage device subsystem connected to the plurality of computers. The storage device subsystem has a plurality of storage devices and a plurality of interfaces, through which the subsystem is connected to the computers. One of the plurality of computers has a management means for holding therein data indicative of the storage devices and a connection relationship between the computers and storage device subsystem. Each computer, when wanting a new device, informs the management means of its capacity and type. The management means receives its notification and selects one of the storage devices which satisfies the request. And the management means instructs the storage device subsystem to set predetermined data in such a manner that the computer can access the selected device. The management means also returns predetermined data to the computer as a device assignment requester, the assignment requester computer modifies setting thereof to allow the computer in question can use the assigned device.10-16-2008
20090300084SET PARTITIONING FOR ENCODING FILE SYSTEM ALLOCATION METADATA - Methods for encoding file system metadata are described herein. According to one embodiment, a file system cache is maintained including information representing relationships between inodes and disk blocks of a disk having disk sections. Each disk section includes a data segment and a header encoding metadata for describing the data section of each disk section. The metadata is encoded using a set partitioning algorithm and each set represents a set of disk blocks. In response to a file system request for reading a disk section, metadata associated with the disk section is retrieved and decoded to extract information representing a relationship between inodes and disk blocks associated with the requested disk section. The file system request is then serviced using the decoded metadata and the associated data segment and one or more entries of the file system cache are updated using the decoded metadata.12-03-2009
20100030828DETERMINATION OF INDEX BLOCK SIZE AND DATA BLOCK SIZE IN DATA SETS - A plurality of data sets is maintained, wherein each data set comprises an index block and a plurality of data blocks. An index block size is determined for redefining the plurality of data sets, based on an amount of space left unused in index blocks of the plurality of data sets, wherein for determining the index block size greater weight is provided to those index blocks with lesser unused space in comparison to those index blocks with greater unused space. A data block size is determined based on whether the plurality of data blocks is used more frequently for direct processing or used more frequently for sequential processing.02-04-2010
20090055452Journaling FAT file system and accessing method thereof - A journaling file allocation table (FAT) file system includes an FAT file system module, a storage device and a driver. The FAT file system module includes a journaling module and receives a file operation instruction sent by an operating system. The storage device has an FAT file system and an FAT journaling cache. The driver is coupled to the FAT file system module, the journaling module and the storage device in order to access the storage device. When the FAT file system stored in the storage device is a journaling FAT file system, the FAT file system module enables the journaling module to receive and execute the file operation instruction sent by the operating system and to accordingly produce a corresponding file operation instruction to the driver for performing a journaling file operation on the storage device.02-26-2009
20090063592METHODS FOR DATA PROCESSING - According to various embodiments, variables are grouped in an unsupervised manner after principal component analysis of a plurality of variables from a plurality of samples. A number of principal components are selected. A subset principal component space is created for those components. A starting variable is selected. A spatial angle is defined around a vector extending from the origin to the starting variable. A set of one or more variables is selected within the spatial angle. The set is assigned to a group. The set is removed from further analysis. The process is repeated starting with the selection of a new starting variable until all groups are found.03-05-2009
20080288561COMPUTER PROGRAM PRODUCT AND METHOD FOR DATABASE MANAGEMENT SYSTEM SUPPORTING MULTIPLE TEMPORARY TABLES - A computer system and a relational database management system (RDMS) computer program product are described for interfacing a number of concurrently running database sessions with a large database in which a plurality of local temporary object database descriptors are used in lieu of a single global temporary object database descriptor where the global and each of the local temporary object database descriptors include identifiers for temporary objects, each of the local temporary object database descriptors is associated with a single database session and each of the global database descriptors is shared among multiple database sessions.11-20-2008
20090172049DEVICE AND METHOD FOR INTEGRATING FILE SYSTEMS - The present invention enables a user to increase storage capacity for a host by using multiple storage devices. File systems are virtualized regardless of any difference in file system format. The invention may be embodied as a device for integrating file systems or as a method of integrating file systems. The device has one or more storage device interfaces for storage devices, a host interface, and a hub connected to the interfaces. The hub creates a virtual file system that aggregates the storage device file systems of storage devices that are connected to the storage device interfaces. The method of integrating file systems includes reading file systems, interpreting them, creating a logical structure containing data of the file systems, and generating in a memory sectors that map the logical structure into a virtual file system.07-02-2009
20090182791Non-Volatile Memories And Method With Adaptive File Handling In A Directly Mapped File Storage System - In a memory system with a file storage system, an optimal file handling scheme is adaptively selected from a group thereof based on the attributes of the file being handled. The file attributes may be obtained from a host or derived from a history of the file had with the memory system. In one embodiment, a scheme for allocating memory locations for a write operation is dependent on an estimated size of the file to be written. In another embodiment, a scheme for allocating memory locations for a relocation operation, such as for garbage collection or data compaction, is dependent on an estimated access frequency of the file in question. In this way, the optimal handling scheme can be used for the particular file at any time.07-16-2009
20090164534SYSTEM AND METHOD TO DERIVE HIGH LEVEL FILE SYSTEM INFORMATION BY PASSIVELY MONITORING LOW LEVEL OPERATIONS ON A FAT FILE SYSTEM - A method (and corresponding system and computer program product) detects modified files and/or directories in a storage device. The method builds a file-sector coordination table for files in the storage device before relinquishing access control of the storage device to a host computer. The method passively monitors write transactions in the storage device from the host computer. The method identifies sectors affected by the monitored write transactions and stores in a sector list. The method regains access control of the storage device from the host computer and builds a list of modified files by intersecting the sector list with the file-sector coordination table. The method may optionally share the list of modified files with related applications.06-25-2009
20090132619METHODS AND APPARATUS FOR DEDUPLICATION IN STORAGE SYSTEM - In one implementation, a storage system comprises host computers, a management terminal and a storage system having block interface to communicate with the host computers/clients. The storage system also incorporates a deduplication capability using chunks (divided storage area). The storage system maintains a threshold (upper limit) with respect to the degree of deduplication (i.e. number of virtual data for one real data) specified by users or the management software. The storage system counts the number of links for each chunk and does not perform deduplication when the number of reduced data for a chunk exceeds the threshold, even if duplication is detected. In another implementation, the storage system additionally incorporates a data migration capability and migrates physical data to high reliability area such as area protected with double parity (i.e. RAID6) when the deduplication level for a chunk exceeds the threshold.05-21-2009
20090132621SELECTING STORAGE LOCATION FOR FILE STORAGE BASED ON STORAGE LONGEVITY AND SPEED - A method for selecting storage locations is provided. The method involves selecting storage locations for file storage by matching the speed and/or longevity of the storage locations with the frequency of access of the file type of the file, or the frequency of access of the file itself. The method allows for optimized usage of storage locations by matching frequently accessed files with higher performing storage locations, storage devices or storage systems.05-21-2009
20090132620DATA STORAGE APPARATUS AND DATA STORAGE METHOD - In response to a write command with regard to an FAT05-21-2009
20100049755Method and Apparatus for Increasing Efficiency of Data Storage in a File System - A method, apparatus, and computer instructions for storing data in a file system. A determination is made as to whether space is available in an inode of the file in the file system. The data is stored into the inode in response to space being available. Additionally, data for a file may be stored in a block that is partially filled with data from another file. Data for a file may be stored using either the inode or by sharing a block. Data also may be stored using both of these mechanisms.02-25-2010
20100049754STORAGE SYSTEM AND DATA MANAGEMENT METHOD - In a NAS apparatus, a processor reads in, from a data volume, metadata of all files included in a file system at a base point-in-time of a snapshot of the data volume, and writes all the read-in metadata to an area of a difference data storage volume (difference volume), and in a storage apparatus, a difference data save processing unit, upon receiving a block write request from the latest base point-in-time to the subsequent base point-in-time, chronologically writes data stored in a block specified by the block write request to an area subsequent to the difference data storage volume area.02-25-2010
20100011037Media aware distributed data layout - A storage system comprises a plurality of vdisks, with each vdisk containing a plurality of storage segments, and each segment providing a specific class of service (CoS). Each vdisk stores files with data and meta data distributed among its storage segments. A storage system comprises a memory having multiple classes of service. The system comprises an interface for storing a file as blocks of data associated with a class of service in the memory. The interface chooses the class of service for a block on a block by block basis. A file system for storing a file comprises a plurality of vdisks, with each vdisk having a plurality of inodes. Each inode of each vdisk stores data on one or more segments, with each segment having a different class of service. The system comprises a controller which stores data of a file in an inode of a vdisk, in one or more segments of that vdisk. A file system for storing a file comprises a plurality of vdisks, and each vdisk having a plurality of inodes. The system comprises a controller including a plurality of processors, with each processor serving one or more of the vdisks. A file system for storing comprises a plurality of vdisks, with each vdisk having a plurality of inodes, a plurality of inodes of at least one vdisk storing data on a plurality of segments, each segment having a different class of service. The system comprises a controller which stores data of the file in one or more segments of one vdisk. A method for storing a file.01-14-2010
20100011036DOCUMENT STORAGE ACCESS ON A PER-APPROVAL BASIS - Systems and methods of the present invention allow a file owner to upload and store a file to a File Storage Area. Through a series of communications, a file requestor may request access to the file. The file owner may grant or deny permissions to access the file and notify the file requestor of the results.01-14-2010
20090327371Storage control device - The storage control device includes: a control unit that stores a data file that includes main data and file information in a write-once type storage medium having a data information area containing a plurality of clusters having a predetermined size; an acquisition unit that acquire size information of the clusters from the storage medium; a calculation unit that calculates a number of clusters required for storing file information corresponding to each data file in data storing area using the number of data files to be stored in the storage medium, the size of file information, and the size information of the clusters; and a setting unit that sets a data information area corresponding to the number of clusters calculated by the calculation unit as a storage area for file information.12-31-2009
20080301204Correlated Analysis of Wasted Space and Capacity Efficiency in Complex Storage Infrastructures - A system and method for correlated analysis of wasted space and capacity efficiency in complex storage infrastructures are provided. The system and method of the illustrative embodiments bring together wasted space data from all areas and components of the storage infrastructure into a single set of reports correlating information from these various sources in the storage infrastructure. In addition, correlated analysis of this collected information is performed with regard to wasted space. Logical storage devices of the storage infrastructure which are unused by host systems may be identified and appropriate corrective actions may be automatically taken. Moreover, automated recommendations and other automated corrective actions may be taken based upon the correlated analysis of the correlated data collected from the various components of the storage infrastructure.12-04-2008
20080301203MANAGING A SNAPSHOT STORED WITHIN A FILE SYSTEM SPACE FOR EFFICIENT DETECTING OF IN-USE BLOCKS - In one embodiment, at least one snapshot thread manages a point in time snapshot of a file system stored within the space allocated to the file system. The snapshot thread tracks, for at least one block of the plurality of blocks of the file system, a separate entry in a snapshot map specifying if each at least one block is newly allocated following the creation of the point in time snapshot and specifying an addressed location of a snapshot copy of the at least one block if copied. Separately, a file system handling thread tracks a mapping of an allocation state of each of said plurality of blocks of the file system. Responsive to detecting the file system triggered to write or delete a particular block from among the at least one block of the file system, the snapshot thread allows the file system to write to or delete the particular block without making a snapshot copy of the particular block if a particular entry for the particular block in the snapshot map specifies the particular block is newly allocated, wherein a block marked newly allocated was not in-use at the point in time of the file system snapshot.12-04-2008
20080301205Method, Apparatus And Computer Program Product For Optimizing Access To The Content Of A Virtual Application Container On A Fixed, Read-Only Medium - Disclosed is a method, apparatus and a computer program of a virtual execution environment. In one aspect thereof a data processor includes a read-only storage medium and a virtual machine monitor configured to execute a program in a virtual container. Prior to execution of the application a set of application components accessed during a phase change are recorded in the read-only storage medium in a manner predetermined to minimize the time needed to retrieve the set of components. At the occurrence of the phase change, or prior to the occurrence of a phase change if the files are prefetched, the virtual machine monitor retrieves the components from the read-only storage medium. In a further aspect thereof there is provided a packager of an application to be executed in a virtualization environment by a virtual machine monitor. The packager is responsive to receiving notification from a virtual machine monitor of an occurrence of contemporaneous file accesses, not associated with a known phase change of a virtual container, to evaluate the occurrence as a candidate phase change, and responsive to the evaluation indicating a presence of a previously unknown phase change, for recording the files accessed on a new read-only storage medium in the order accessed for use by the same or a different virtual machine monitor during another instance of execution of the application.12-04-2008
20080256147Method and a System for Storing Files - The present invention presents a method and a system of indexing, storing and retrieving data to and from multiple, remote and connected data sources over internet or intranet. Files are shredded into fixed number of strips using a defined pattern (shredding algorithm) and distributed randomly amongst the storage data sources (storage nodes). A unique index is maintained for each file and its strips along with corresponding storage nodes in a central file-storage database. On demand to retrieve a file, file-storage database is looked up for all relevant strips and storage nodes containing them. These file strips are then collected from all storage nodes and dressed back according to a defined anti-pattern (dressing algorithm) to the pattern used for shredding them. Failover control for storage nodes can be achieved by replicating each strip for a fixed number of storage nodes (replication factor). In case a storage node is not available, the next storage node containing the same strip can be used to get the strip back.10-16-2008
20080235304STORAGE SYSTEM AND STORAGE DEVICE ARCHIVE CONTROL METHOD - An archive management that allows random access. An archive managing part reads out files stored in an on-line volume at a timing determined by the respective file type, and stores these files in a specified volume among archive volumes. A retention term is designated for each set of file data, and respective retention terms are also set for the respective volumes. The file data is stored in a volume having a retention term that matches the retention term of the file data. The respective volumes are set in a device that allows random access. The areas in which data is written into the respective volumes are managed as write prohibited areas by pointers such that the respective volumes are used as a WORM device.09-25-2008
20080235303Image readout system, server apparatus, image readout apparatus, and terminal apparatus - An application folder associated with a client PC and an application software of the client PC is generated in a storage section of a station PC. Scan data stored in the application folder is then moved to an application data folder of the client PC, which folder corresponds to the client PC and application software associated with the application folder. As a result, in a network scanner system in which a scanner apparatus is connected to the client PC over a network, it is possible to efficiently store scan data read out by the scanner apparatus and perform data processing to the scan data by an application software.09-25-2008
20080222222INFORMATION RECORDING APPARATUS AND INFORMATION RECORDING METHOD - An information recording apparatus recording contents on a recording medium and managing the contents by using a content management file includes a control unit that checks a recording state of the recording medium loaded in the information recording apparatus to determine how to set up the content management file to be recorded on the recording medium and recording means for recording the content management file on the recording medium. The control unit determines the file setup of the content management file on the basis of the recording capacity of an area where the contents can be recorded on the recording medium. The recording means records the content management file in accordance with the file setup on the recording medium.09-11-2008
20080222221Reducing database fragmentation - Reducing database fragmentation is disclosed. One embodiment includes determining whether the building of an index of data that is to be stored in a database has been initiated and determining whether the size of a sub-range of the index exceeds a predetermined size. A block of data storage space is pre-allocated contiguous to a block of data storage space allocated for the sub-range to accommodate subsequent inserts of data into the sub-range, if it is determined that the sub-range exceeds the predetermined size.09-11-2008
20080215647NAMING PROTOCOL FOR EXTENSIBLE FILE SYSTEMS - An extensible file system format for portable storage media is provided. The extensible file system format includes the specification of primary and secondary directory entry types that may be custom defined. The primary and secondary directory entry types can be further classified as critical and benign directory entries.09-04-2008
20080201392Storage system having plural flash memory drives and method for controlling data storage - Provided is a storage system having a storage device including memory drives formed of the non-volatile memory, a group is constituted by the memory drives whose number is larger than the number of memory drives necessary to provide the memory capacity, the divided storage areas are managed in each of segments that includes at least one of the divided storage areas, the data storage area or the temporary storage area is allocated to the divided storage areas, upon receiving a data write request, the data storage area in which the write data is written and the segment are specified, the updated data is written in the temporary storage area included in the specified segment, the temporary storage area in which the data is written is set as a new data storage area, and data stored in the data storage area is erased and set as a new temporary storage area.08-21-2008
20080201391Methods and apparatus for adjusting a journal area for continuous data protection - In a storage system implementing journaling for data backup and restore, users are able to easily determine information regarding amounts journal data generated over specified periods of time. Flexible and automatic adjustment of the journal area is enabled by providing the user with the information on the relationships between the amounts of journal data generated over periods of time. Also dynamic allocation of storage capacity from free space may be applied to the journal volume on an as-needed basis, and may be used to minimize the size of the journal volume when certain journal entries are determined to be no longer needed. Thus, users are able to determine an appropriate size of a journal area in accordance with requirements for predetermined preservation periods for backup data. Thereby, management of the journal area is simplified and the costs to manage the journal area are reduced.08-21-2008

Patent applications in class File allocation

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