Abstract: A read cache may include portions of files stored on media of a media library. Embodiments described herein may include systems and methods for restoring a read cache, including restoring stub files to a read cache on an ad hoc basis.

Abstract: A system, method and computer program product for synchronizing data written to tape with improved data recovery. When writing data to tape, an index is kept in memory and updated to reflect change(s) to a file system mounted on tape. After a predetermined amount of data is written to a tape, a device may perform a sync operation, causing the index to be written into a data partition of the tape. If the sync operation is successful, the index in the index partition of the tape can be updated using a copy of the index in the data partition of the tape next time the tape is mounted. If the sync operation is not successful, the device may write the data to a different location on the same or another tape, update the index, and force another sync operation. This process can be repeated.

Abstract: A read cache may include portions of files stored on media of a media library. Embodiments described herein may include systems and methods for restoring a read cache, including restoring stub files to a read cache on an ad hoc basis.

Abstract: Embodiments described herein provide systems and methods for a self-describing tape that allow files stored on a tape according to a tape file system to be presented in a similar manner (e.g., to an operating system, to a network file system interface) by different instances of a second type of file system (e.g., a non-tape file system). This can include, for example, allowing a file system of the second type to consistently present files over a network file system interface as being available at the same directory path location, according to the same permissions.

Abstract: Embodiments described herein provide systems and methods for a self-describing tape that allow files stored on a tape according to a tape file system to be presented in a similar manner (e.g., to an operating system, to a network file system interface) by different instances of a second type of file system (e.g., a non-tape file system). This can include, for example, allowing a file system of the second type to consistently present files over a network file system interface as being available at the same directory path location, according to the same permissions.

Abstract: Disclosed is a system, method and computer program product for synchronizing data written to tape with improved data recovery. When writing data to tape, an index is kept in memory and updated to reflect change(s) to a file system mounted on tape. After a predetermined amount of data is written to a tape, a device may perform a sync operation, causing the index to be written into a data partition of the tape. If the sync operation is successful, the index in the index partition of the tape can be updated using a copy of the index in the data partition of the tape next time the tape is mounted. If the sync operation is not successful, the device may write the data to a different location on the same or another tape, update the index, and force another sync operation. This process can be repeated.

Abstract: Systems, methods and computer software utilized in the implementation of tamper protection, where unique information associated with data storage tapes and with particular revisions of these tapes is stored on the storage medium itself and on a memory of the tape cartridge, so that the data can be compared to determine whether unauthorized modifications have been made to the tapes. One embodiment is a system which includes an archive node appliance coupled between a set of hosts and a tape media library. The archive node appliance presents files stored on a tape of a media library as a directory. The archive node appliance maintains tamper protection data on the tape and on an auxiliary memory on the cartridge of the tape, and determines from this data whether the tape has been altered by an authorized system.

Abstract: A system, method and computer program product for synchronizing data written to tape with improved data recovery. When writing data to tape, an index is kept in memory and updated to reflect change(s) to a file system mounted on tape. After a predetermined amount of data is written to a tape, a device may perform a sync operation, causing the index to be written into a data partition of the tape. If the sync operation is successful, the index in the index partition of the tape can be updated using a copy of the index in the data partition of the tape next time the tape is mounted. If the sync operation is not successful, the device may write the data to a different location on the same or another tape, update the index, and force another sync operation. This process can be repeated.

Abstract: System, apparatus and computer program product for automatically determining a type of tape drive that is present in a media library and accessing the tape drive using commands that are adapted to the identified type of the drive. In one embodiment, a system includes a set of hosts, a media library and an archive node appliance. The archive node appliance is coupled between the hosts and the media library to provide the hosts with access to a set of drives and media in the media library. The archive node appliance has a processor and a data store that contains instructions that are executable on the processor to perform, for one or more of the drives, the method of identifying the type of the drive, identifying a set of software applications adapted to control the drive, and executing the software application, where the drive is accessed through the software application.

Abstract: Systems, methods and computer software utilized in the implementation of tamper protection, where unique information associated with data storage tapes and with particular revisions of these tapes is stored on the storage medium itself and on a memory of the tape cartridge, so that the data can be compared to determine whether unauthorized modifications have been made to the tapes. One embodiment is a system which includes an archive node appliance coupled between a set of hosts and a tape media library. The archive node appliance presents files stored on a tape of a media library as a directory. The archive node appliance maintains tamper prevention data on the tape and on an auxiliary memory on the cartridge of the tape, and determines from this data whether the tape has been altered by an authorized system.

Abstract: System, apparatus and computer program product for automatically determining a type of tape drive that is present in a media library and accessing the tape drive using commands that are adapted to the identified type of the drive. In one embodiment, a system includes a set of hosts, a media library and an archive node appliance. The archive node appliance is coupled between the hosts and the media library to provide the hosts with access to a set of drives and media in the media library. The archive node appliance has a processor and a data store that contains instructions that are executable on the processor to perform, for one or more of the drives, the method of identifying the type of the drive, identifying a set of software applications adapted to control the drive, and executing the software application, where the drive is accessed through the software application.

Abstract: 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, and causing the accumulated data to be migrated to a tape in a tape library. In one embodiment, the amount of data to be accumulated is set to be two wraps or a multiple thereof. Using embodiments, it can take zero or near zero time to rewind the tape when unloading occurs, eliminating wasted tape movement time and significantly increasing tape performance. In one embodiment, the accumulation of data may be terminated even if the desired amount of data has not been accumulated. In one embodiment, the termination might be triggered by a timeout condition.

Abstract: 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.

Abstract: Embodiments provide a solution for controlling file migration in archiving systems. A networked device can be configured to, during an archiving process, exclude or otherwise prevent files from migrating to tape or another archiving appliance connected to the networked device which, in one embodiment, implements an archive node appliance. The archive node appliance may be configured to start an archiving process to store a file. The archiving process may cause the file to be stored in a share or directory on the archive node appliance. The archive node appliance may check a file exclusion policy associated with the share or directory to determine whether the file is to be excluded from migration. The archive node appliance may stop the archiving process if it determines that the file exclusion policy contains a pattern that matches the file name. One example of such a pattern can be a user-defined glob.

Abstract: 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, and causing the accumulated data to be migrated to a tape in a tape library. In one embodiment, the amount of data to be accumulated is set to be two wraps or a multiple thereof. Using embodiments, it can take zero or near zero time to rewind the tape when unloading occurs, eliminating wasted tape movement time and significantly increasing tape performance. In one embodiment, the accumulation of data may be terminated even if the desired amount of data has not been accumulated. In one embodiment, the termination might be triggered by a timeout condition.

Abstract: 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.

Abstract: A read cache may include portions of files stored on media of a media library. Embodiments described herein may include systems and methods for restoring a read cache, including restoring stub files to a read cache on an ad hoc basis.

Abstract: Embodiments provide a solution for controlling file migration in archiving systems. A networked device can be configured to, during an archiving process, exclude or otherwise prevent files from migrating to tape or another archiving appliance connected to the networked device which, in one embodiment, implements an archive node appliance. The archive node appliance may be configured to start an archiving process to store a file. The archiving process may cause the file to be stored in a share or directory on the archive node appliance. The archive node appliance may check a file exclusion policy associated with the share or directory to determine whether the file is to be excluded from migration. The archive node appliance may stop the archiving process if it determines that the file exclusion policy contains a pattern that matches the file name. One example of such a pattern can be a user-defined glob.

Abstract: Disclosed is a system, method and computer program product for synchronizing data written to tape with improved data recovery. When writing data to tape, an index is kept in memory and updated to reflect change(s) to a file system mounted on tape. After a predetermined amount of data is written to a tape, a device may perform a sync operation, causing the index to be written into a data partition of the tape. If the sync operation is successful, the index in the index partition of the tape can be updated using a copy of the index in the data partition of the tape next time the tape is mounted. If the sync operation is not successful, the device may write the data to a different location on the same or another tape, update the index, and force another sync operation. This process can be repeated.

Abstract: 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, and causing the accumulated data to be migrated to a tape in a tape library. In one embodiment, the amount of data to be accumulated is set to be two wraps or a multiple thereof. Using embodiments, it can take zero or near zero time to rewind the tape when unloading occurs, eliminating wasted tape movement time and significantly increasing tape performance. In one embodiment, the accumulation of data may be terminated even if the desired amount of data has not been accumulated. In one embodiment, the termination might be triggered by a timeout condition.