HP File System Extender (FSE) Linux-specific limitations, Special file types are not supported

Page 20

The following is an example of an error message that may be written to the FSE error log file after a bus reset and the consequent FSE tape media rewind:

CRITICAL ERROR: Internal error. Contact support. (5: MAJOR INTERNAL

ERROR: Data corruption detected. 'Counted medium position (395405) is

different from actual (12897). Job: 20050607000206 Medium/volume: 000391/1').

Other messages that can be displayed are:

(5. MAJOR INTERNAL ERROR: Data corruption detected. 'Data loss detected.

Medium was overwritten. See error log. Medium/volume: 000391/1')

(5. MAJOR INTERNAL ERROR: Data corruption detected. 'Medium position

changed to 0. Aborting. See error log. Medium/volume: 000391/1')

Proper operation of the FSE implementation in a SAN environment is guaranteed only if the SAN switch or bridge is configured in such a way that it propagates bus reset errors. The errors can then be detected and handled appropriately by FSE, and data loss can be prevented.

Reusing file systems for newly configured FSE partitions

FSE does not allow existing HSM file systems to be assigned to newly configured FSE partitions. You can configure a new FSE partition and use the fsepartition --addcommand only if a native file system with non-HSM directories and files is specified in the FSE partition configuration file. Such a file system can be any of the supported native file systems, provided that it has not been used as an HSM file system before.

Linux specific

On Linux platform, the supported native file system type is Ext3.

Windows specific

On Windows platform, the supported native file system type is NTFS.

CAUTION: Data loss will occur during FSE operation if you try to reuse a file system that was previously used as an HSM file system by assigning it to a new FSE partition.

You can however reuse disk space occupied by an HSM file system by deleting the file system and creating a new one in its place.

Linux specific

You can create a new file system by running the mkfs command.

Windows specific

You can create a new file system by creating and formatting a new disk volume with the Computer Management tool.

NOTE: Upgrade from a previous FSE release to current FSE release preserves both the existing FSE partitions and HSM file systems, so the above limitation does not apply for the upgrade process.

Linux-specific limitations

Special file types are not supported

The FSE implementation does not support handling of special file types. On Linux platform, the following file types are not supported:

•char devices

•block devices

20 Limitations

Page 19 Page 21
Image 20
Page 19 Page 21
Contents HP StorageWorks File System Extender File System Extender 3.2 Release Notes Contents Known issues and workarounds Related documentation About this guideIntended audience Document conventions and symbols PrerequisitesSoftware requirements Hardware requirementsHelpful web sites HP technical supportHP-authorized reseller Page Supported storage arrays, tape drives, and libraries Supported hardware and softwareHardware requirements Supported operating systems and platforms Linux platformSoftware requirements Windows platformSupported third-party software New features Enhanced robustnessSupport for LTO Ultrium 3 media Miscellaneous enhancementsNew features Shortening the termination delay for FSE commands RecommendationsGeneral recommendations Keeping the FSC and Hsmdb journals smallPreventing exhaustion of Corba sockets ScanGranularity =Linux-specific recommendations Migrating to a newer tape drive technologyWindows-specific recommendations Improving performance of the FSE-Samba integrationLimitations Common limitationsSpecial file types are not supported Reusing file systems for newly configured FSE partitionsLinux-specific limitations Limited symbolic link support Directories with sticky bit not supportedFile size limitation Append-only and immutable files cannot be releasedFile transfer blockage between Samba client and server Unsupported Windows services and file system features Recycle Bin must be disabled on FSE implementationWindows-specific limitations Unsupported third-party softwareLimited support for Windows disk checker Limitations on the Traditional Chinese Windows systemsKnown issues and workarounds Using the command fsefile --migrateDirectoryPath FilenameKnown issues and workarounds
Related manuals
Manual 99 pages 2.23 Kb Manual 115 pages 39.56 Kb Manual 328 pages 27.8 Kb Manual 92 pages 24.26 Kb

File System Extender (FSE) specifications

HP File System Extender (FSE) is a sophisticated solution designed to optimize data storage management for enterprises that deal with large volumes of unstructured data. This technology addresses the challenges of data growth and the need for effective data retention strategies, enabling organizations to store and manage their information more efficiently.

One of the main features of HP FSE is its ability to intelligently migrate data between primary and secondary storage. By utilizing policies that determine when to move infrequently accessed files to lower-cost storage environments, FSE helps reduce the strain on primary storage systems and saves on costs associated with high-performance storage solutions. This tiered approach to data management ensures that organizations can access the data they need quickly while still maintaining an efficient overall storage architecture.

Another notable characteristic of HP FSE is its seamless integration with existing storage infrastructures. The solution works with a variety of storage systems, allowing organizations to utilize their current investments without the need for significant changes to their infrastructure. This interoperability is powered by advanced technologies that facilitate data migration and retrieval, ensuring a smooth transition for organizations looking to optimize their storage strategies.

Additionally, HP FSE is equipped with robust reporting and analytics capabilities. This functionality provides organizations with insights into their storage usage, helping them understand data patterns and optimize their storage environments accordingly. By having visibility into which files are accessed most frequently and which are rarely used, organizations can make informed decisions on data retention policies and storage management.

Security is paramount in data management, and HP FSE addresses this concern by implementing advanced data protection features. This includes data encryption, secure access controls, and compliance with industry regulations, ensuring that sensitive information is safeguarded throughout its lifecycle.

Overall, HP File System Extender is a comprehensive data storage solution that combines intelligent data management, seamless integration, insightful analytics, and robust security features. By leveraging these capabilities, organizations can efficiently manage their unstructured data, lower costs, and enhance operational efficiency, making it an invaluable tool in today’s data-driven landscape.
Top Page Image Contents