Patent application number | Description | Published |
20080201341 | CONTENTS MANAGEMENT METHOD - An increase in the amount of resources necessary for storing contents is prevented, and a wait time taken from issuance of a content read request from a client to start of replay of the content is shortened. A file server stores header parts of contents cut off from heads of the contents in a content cache which can read the contents at a speed higher than a storage. When accepting the content read request from a client, the file server first returns the header part of the content stored in the content cache to the client. During replay of the content in the client, the file server reads out remaining parts of the content in the storage subsequent to the returned header part of the content, and returns them to the client. | 08-21-2008 |
20080208932 | Method and system for continuous data protection - In operation of continuous data protection, a continuous data protection method enables the user to easily select a copy data storage volume and an update request storage volume. A storage management server calculates selection conditions of candidates for a copy data storage volume and an update request storage volume based on a continuous data protection period to continuously protect a protection target volume and a disk capacity and an update access characteristic of the protection target volume to thereby select, according to the selection conditions, the candidates for the copy data and update request storage volumes. At occurrence of abnormality in data of the protection target volume, the continuous data protection system can restore data to a particular position (point of time) within the continuous data protection period. | 08-28-2008 |
20080301201 | Storage System and Method of Managing Data Using Same - The storage system includes a file server connected to a host apparatus and configured to provide a directory in a file system having a directory structure to the host apparatus, a storage subsystem connected to the file server and configured to provide a volume for storing the file system, and a management apparatus connected respectively to the file server and the storage subsystem and configured to manage backup/restoration of an arbitrary directory contained in the file system. The storage system selects one of backup methods of a directory designated as a backup target by the management apparatus, and executes backup processing to the designated directory. The storage system also includes a restoration controller configured to control execution of restoration processing to backup data based on the backup processing. | 12-04-2008 |
20090055520 | METHOD FOR SCHEDULING OF STORAGE DEVICES - MAID (Massive Array of Idle Disks) technology can not stop an array group in a time zone in which if any access is made to the array group desired to be stopped. For realization of power saving, the power may be stopped in a time zone when there is no access, but frequent power-on or power-off has a possibility of shortening the life of a physical disk. In addition, if plural physical disks are collectively activated in a particular period, the power consumption of a storage system as a whole in that period is increased sharply, so that there is a possibility that the stable operation of the storage system is adversely affected. For realizing power saving, plural tasks using the storage system is by scheduled and the task execution and the power-on and power-off of a power controlled unit is controlled based on the schedule selected by a user. | 02-26-2009 |
20090113156 | MANAGEMENT METHOD OF PERFORMANCE HISTORY AND A MANAGEMENT SYSTEM OF PERFORMANCE HISTORY - A performance history management method and system are disclosed, in which the time-series performance history such as a volume included in a storage device is managed as one time-series performance history at the time of data rearrangement or device change. The data-oriented performance history providing the logical place of storage of the data stored in the volume is generated using the storage performance monitor program based on the rearrangement history information providing the information on the history of transfer of the data stored in the rearrangement history table and the volume of the storage device by the storage structure information acquisition program, the storage structure information stored in the storage structure information table and the performance history of each volume stored in the storage performance history table by the storage performance information acquisition program. The performance history can be displayed or the performance change detected to display an alert. | 04-30-2009 |
20090199041 | STORAGE CONFIGURATION RECOVERY METHOD AND STORAGE MANAGEMENT SYSTEM - When failure occurs in a virtualization apparatus in storage network circumstances in which the virtualization apparatus is operated, a storage management server judges volume position information, cache configuration information and pair configuration information which are configuration information of the virtualization apparatus and external storage collectively to decide candidates of recovery methods of volume and candidates of recovery methods of data in the volume, so that construction of a physical volume and a pair and recovery of data are performed and an access path is then changed to the recovered physical primary volume. Consequently, change to the system configuration in which operation is performed without passing through the virtualization apparatus can be made in a short time and continuous operation can be attained. | 08-06-2009 |
20100125715 | Storage System and Operation Method Thereof - To efficiently assign storage resources to storage areas in a well-balanced manner in terms of performance and capacity, provided is a storage system in which, for a storage apparatus including a disk array group providing a logical volume to be assigned to an application, a storage management unit holds the throughput, response time, and storage capacity of the array group; receives performance density being a ratio between a throughput and a storage capacity, and a requirement on a storage capacity required for the logical volume; and assigns the throughput to the logical volume on the basis of the received performance density and the capacity requirement with the throughput of the array group set as an upper limit, and assigns, to the logical volume, a storage area determined on the basis of the assigned throughput and the received capacity requirement. | 05-20-2010 |
20110138136 | STORAGE SYSTEM AND CONTROLLING METHODS FOR THE SAME - For the purpose of optimizing the performance separation according to the usage status of the protocol and the storage system performance, in a storage system | 06-09-2011 |
20110167045 | STORAGE SYSTEM AND ITS FILE MANAGEMENT METHOD - A storage system capable of providing a referral target file to a file referral requestor client even if a file referral request is made before migration. When a file server | 07-07-2011 |
20120023146 | STORAGE SYSTEM AND METHOD OF CONTROLLING SAME - Data migration is efficiently executed with optional timing. A file server outputs an instruction to a CPU of a storage apparatus to migrate a file belonging to Tier 1 to Tier 2 when, based on policy information, a condition for migrating the file belonging to Tier 1 to Tier 2 is fulfilled. Based on the instruction from the file server, the CPU copies the data of migration target files in Tier 1 from a page to a Tier 1 virtual page, copies the data which has been copied to the Tier 1 virtual page | 01-26-2012 |
20120023233 | METHOD FOR EXECUTING MIGRATION BETWEEN VIRTUAL SERVERS AND SERVER SYSTEM USED FOR THE SAME - For each of multiple migration policies, a server system | 01-26-2012 |
20120110263 | MANAGEMENT METHOD OF PERFORMANCE HISTORY AND A MANAGEMENT SYSTEM OF PERFORMANCE HISTORY - A performance history management method and system are disclosed, in which the time-series performance history such as a volume included in a storage device is managed as one time-series performance history at the time of data rearrangement or device change. The data-oriented performance history providing the logical place of storage of the data stored in the volume is generated using the storage performance monitor program based on the rearrangement history information providing the information on the history of transfer of the data stored in the rearrangement history table and the volume of the storage device by the storage structure information acquisition program, the storage structure information stored in the storage structure information table and the performance history of each volume stored in the storage performance history table by the storage performance information acquisition program. The performance history can be displayed or the performance change detected to display an alert. | 05-03-2012 |
20120191671 | COMPUTER SYSTEM AND DATA DE-DUPLICATION METHOD - A computer system and data de-duplication method capable of performing efficient data de-duplication are suggested. | 07-26-2012 |
20130097400 | STORAGE SYSTEM AND CONTROLLING METHODS FOR THE SAME - For the purpose of optimizing the performance separation according to the usage status of the protocol and the storage system performance, in a storage system | 04-18-2013 |
20130166614 | COMPUTER SYSTEM, FILE MANAGEMENT METHOD, AND STORAGE MEDIUM - A computer system of an embodiment includes a processor and a storage device for managing real file systems and a virtual file system virtualizing the real file systems to control relocation of a file in the virtual file system. Volumes different in access performance provided by a storage system are assigned to the real file systems belonging to tiers different in access performance. The storage device stores file usage state information representing usage states of files in the virtual file system and storage usage state information representing a usage state of the storage system. The processor generates control information associating characteristics of files with evaluation values of the tiers using the two pieces of information and determines an evaluation value for each of one or more relocation destination tier candidates of a first file in the virtual file system based a characteristic of the first file and the control information. | 06-27-2013 |
20130198457 | COMPUTER SYSTEM AND STORAGE CONTROL METHOD - The entirety or a part of free space of a second storage device included in a host computer is used as a cache memory region (external cache) outside of a storage apparatus. If Input/Output (I/O) in the host computer is Write, a Write request is transmitted from the host computer to a storage apparatus, the storage apparatus writes data associated with the Write request into a main cache that is a cache memory region included in this storage apparatus, and the storage apparatus writes the data in the main cache into a first storage device included in the storage apparatus. The storage apparatus writes the data in the main cache into an external cache included in the host computer. If the I/O in the host computer is Read, the host computer determines whether or not Read data as target data of the Read exists in the external cache. If a result of the determination is positive, the host computer reads the Read data from the external cache. | 08-01-2013 |