Crossroads Systems, Inc. Patent applications |
Patent application number | Title | Published |
20140025911 | SYSTEM, METHOD AND COMPUTER PROGRAM PRODUCT FOR OPTIMIZATION OF TAPE PERFORMANCE USING DISTRIBUTED FILE COPIES - A tape performance optimization method may include accumulating data in a memory, monitoring the accumulation of data, determining whether a certain amount of data has been accumulated in the memory, causing the accumulated data to be migrated to a tape in a tape library, and tracking physical locations of files stored on tape. In one embodiment, the amount of data to be accumulated is set to be two wraps or a multiple thereof. In one embodiment, two copies of data are written to two tapes in an alternating fashion. When a file is to be read, a tape is accessed if it has a copy of the file whose physical location is determined to be closest to beginning of tape. Since file location on tape determines the time it takes to position the tape, this method can shorten the amount of time required to retrieve a file from tape. | 01-23-2014 |
20130311527 | SYSTEM AND METHOD FOR IMPLEMENTING A NETWORKED FILE SYSTEM UTILIZING A MEDIA LIBRARY - Embodiments of systems and methods for implementing a file system utilizing a media library are disclosed. In particular, embodiments may present a network based file system to one or more host devices. These host devices may utilize the network based file system to organize, store, read or perform other operations in association with files. These files may be managed in conjunction with the media library. | 11-21-2013 |
20130290388 | System and Method for Using a Memory Buffer to Stream Data from a Tape to Multiple Clients - Embodiments described herein provide systems and methods for streaming data to multiple reading clients. More particularly, embodiments described herein provide systems and methods for using a memory buffer to stream file data from a mounted tape file system volume to multiple reading clients. | 10-31-2013 |
20130151807 | Storage Router and Method for Providing Virtual Local Storage - A storage router and method for providing virtual local storage on remote storage devices to devices are provided. Devices are connected to a first transport medium, and a plurality of storage devices are connected to a second transport medium. In one embodiment, the storage router maintains a map to allocate storage space on the remote storage devices to devices connected to the first transport medium by associating representations of the devices connected to the first transport medium with representations of storage space on the remote storage devices, wherein each representation of a device connected to the first transport medium is associated with one or more representations of storage space on the remote storage devices. The storage router can control access from the devices connected to the first transport medium to the storage space on the remote storage devices in accordance with the access controls. | 06-13-2013 |
20130080568 | SYSTEM AND METHOD FOR CACHING INQUIRY DATA ABOUT SEQUENTIAL ACCESS DEVICES - An intermediate device communicatively connected to a host device and a sequential device in a storage area network. The host device is configured to issue different kinds of commands to the sequential device, including an inquiry command. The sequential device is configured to sequentially process requests from the host device. The intermediate device is configured to cache inquiry data about the sequential device itself in a cache memory connected to the intermediate device and service inquiry commands from the host device. | 03-28-2013 |
20100182887 | SYSTEM AND METHOD FOR IDENTIFYING FAILING DRIVES OR MEDIA IN MEDIA LIBRARY - Embodiments of methods and systems comprise identifying failing media and/or drives for a media library. Error data can be collected from media libraries. For each tape exhibiting an error rate of interest, a determination can be made whether the tape would still have been of interest had it not been loaded in certain drives. This information can be analyzed to identify failing drives or tapes. | 07-22-2010 |
20090327566 | Storage Router and Method for Providing Virtual Local Storage - A storage router ( | 12-31-2009 |
20090319742 | Storage Router and Method for Providing Virtual Local Storage - A storage router ( | 12-24-2009 |
20090319715 | Storage Router and Method for Providing Virtual Local Storage - A storage router ( | 12-24-2009 |
20090274300 | METHOD FOR CONFIGURING THE ENCRYPTION POLICY FOR A FIBRE CHANNEL DEVICE - A data encryption engine and method for using to selectively encrypt communications. Data is received from a source device into the data encryption engine. The data encryption engine determines whether or not to encrypt the data based on a source device preference, a target device preference, a comparison of priority numbers for the source device and target device, the transport medium, the relationship between the source device and target device, a type/level of encryption or some combination. If the data is determined to need encryption, the data encryption device may encrypt the data or may flag the data for encryption by the target device. Otherwise the unencrypted data may be forwarded to the target device. | 11-05-2009 |
20090198737 | System and Method for Archive Verification - Embodiments provide systems and methods for archive verification of media in a library. A method of archive verification may comprise loading a specified media into a drive at intervals, sending one or more commands to the drive, wherein the drive attempts to read the specified media or data on the specified media in accordance with the one or more commands, collecting data associated with the specified media from the drive and determining the readability of the specified media or data on the specified media. | 08-06-2009 |
20090198650 | MEDIA LIBRARY MONITORING SYSTEM AND METHOD - Embodiments of methods and systems comprise collecting data associated with a library or library components and storing the collected data in repository. By collecting data associated with a library or library components and storing the collected data in a repository, the degradation of library components can be monitored and the reliability of library components determined, allowing unreliable components to be bypassed or replaced, enhancing the reliability of the library and preventing data loss. | 08-06-2009 |
20090177840 | System and Method for Servicing Inquiry Commands About Target Devices in Storage Area Network - Inquiry data received from sequential target devices is stored in a cache memory. In one embodiment, the cache memory is coupled to a router. In one embodiment, when the router receives from a host an inquiry command about a target, the router first checks to see if the inquiry command can be serviced from the cache. If so, the inquiry data about the target is retrieved from the cache and returned to the host. If not, the router checks to see if the target is busy. If not busy, the router routes the inquiry command to the target and stores the inquiry data returned by the target in the cache. If the target is busy, the router places the inquiry command in a queue. When the target becomes available, the router forwards the inquiry command to the target for processing, thereby keeping the inquiry command from timing out. | 07-09-2009 |
20090172123 | PROVIDING APPLICATION-LAYER FUNCTIONALITY BETWEEN ONE OR MORE DATABASE CLIENTS AND ONE OR MORE DATABASE SERVERS - One embodiment includes a system providing application-layer functionality between one or more database clients and one or more database servers. The system includes one or more decoders residing at a decoding layer above a network layer. The decoders reside at a first network location between one or more database clients residing at one or more second network locations and one or more database servers residing at one or more third network locations. The decoders receive database messages communicated from the database clients and intended for the database servers and database messages communicated from the database servers and intended for the database clients, decode the database messages, and extract query-language statements from the database messages. The system also includes an application residing at an application layer above the decoding layer. The application resides at the first network location. The application receives and processes query-language statements extracted at the decoders. | 07-02-2009 |
20090157710 | SYSTEM AND METHOD FOR CONTROLLING ACCESS TO MULTIPLE PHYSICAL MEDIA LIBRARIES - Embodiments of the present invention provide a media library controller that can communicate with multiple physical libraries that are physically separate from each other (i.e., that cannot pass media back and forth). The media library controller can maintain a virtualized aggregate media library representing the physical media libraries with which it is in communication. From the physical media libraries, the media library controller can establish a virtual media library and associate a host with the virtual media library. The virtual media library can represent the portions of a physical media library to which the host is allowed access. | 06-18-2009 |
20090138487 | Application-Layer Monitoring of Communication Between One or More Database Clients and One or More Database Servers - One embodiment includes a system for application-layer monitoring of communication between one or more database clients and one or more database servers. The system includes one or more decoders residing at a decoding layer above a network layer. The decoders reside at a first network location between one or more database clients residing at one or more second network locations and one or more database servers residing at one or more third network locations. The decoders receive database messages communicated from the database clients and intended for the database servers and database messages communicated from the database servers and intended for the database clients, decode the database messages, and extract query-language statements from the database messages. The system also includes a monitoring application residing at an application layer above the decoding layer. The monitoring application resides at the first network location. The monitoring application receives query-language statements extracted at the decoders and records observations on the database messages based on the query-language statements extracted at the decoders. | 05-28-2009 |
20090119452 | METHOD AND SYSTEM FOR A SHARABLE STORAGE DEVICE - Systems and methods for sharable tape devices are presented. More particularly, embodiments of a virtual tape server may automatically create a virtual tape device for an identified host such that hosts may interact with corresponding virtual tape devices. Thus, rather than having multiple hosts share a limited number of virtual tape devices, each host may interact with a virtual tape device corresponding only to that host (or a limited number of hosts), allowing substantially simultaneous interactions to take place between multiple hosts and multiple virtual tape devices and substantially alleviating the need of an application on a particular host to take into account other hosts or other applications when scheduling operations. | 05-07-2009 |
20090049224 | System and Method for Distributed Partitioned Library Mapping - Embodiments of the present invention provide a system and method of media library access that eliminates, or at least substantially reduces, the shortcomings of prior art media library access systems and methods. More particularly, embodiments of the present invention provide systems and methods of distributed mapping of media library partitions. According to one embodiment, the present invention can include a first controller connected to a data transport element of a media library and a second controller connected to a media changer of the media library. The first controller can maintain a media library partition representing a portion of the media library, receive a command from a host application based on the media library partition and forward the command to the second controller. The first controller can further translate logical addresses referenced in the command to physical addresses before forwarding the command to the second controller. The second controller can receive the command from the first controller and forward the command to the media changer. The second controller, according to another embodiment of the present invention, can also prioritize the command on a FIFO basis or according to other prioritization scheme known in the art. | 02-19-2009 |
20080307444 | STORAGE ROUTER AND METHOD FOR PROVIDING VIRTUAL LOCAL STORAGE - A storage router ( | 12-11-2008 |