# fserecover --hsmfs PartitionName | HP File System Extender (FSE)

3.Start the recovery of the HSM file system by invoking the following command on the consolidated FSE system or FSE server:

#fserecover --hsmfs PartitionName

Windows specific

To recover an HSM file system on a Windows FSE client:

1.Using the fsepartition --showand mountvol commands, determine the corresponding volume name and run the following command:

C:\>fse --umountMountPoint VolumeName

2.Format the HSM file system using Computer Management or the format command.

3.Unmount the HSM file system once again as described in step 1.

4.Start recovery of the HSM file system by invoking the following command on the consolidated FSE system or FSE server:

C:\>fserecover --hsmfs PartitionName

Assuming the prerequisites are met, the recovery process will start recreating the file system structure as follows:

1.The recovery job checks if the recovery has already been started so it can be resumed from the last recovered fileID.

2.It verifies that the HSM file system is not mounted and then mounts it on the temporary mount point.

3.It removes the existing HSMDB.

4.It scans the FSC and recovers the file system.

5.The FSC scanner retains the last recovered file ID that is written in the recovery progress status file. This enables file system recovery to be resumed after a power failure or other interruptions. In case this file is lost, recovery is started from the beginning. If you want to start an interrupted recovery from the start, you need to delete this file.

Linux specific

On Linux platform, the full pathname of the recovery progress status file is

/var/opt/fse/tmp/.PartitionName_hsmfs_recover. Windows specific

On Windows platform, the full pathname of the recovery progress status file is

%InstallPath%\var\tmp\.PartitionName_hsmfs_recover.

The value of %InstallPath% depends on the choice made in the FSE installation process. It defaults to C:\Program Files\Hewlett-Packard\FSE.

6.It unmounts the temporarily mounted HSM FS and removes temporary mount points and device files.

Status of user data on the recovered HSM file system

Once the HSM file system is recovered, the states of directories and files are as follows:

•Directories may not have proper change, modify, and access time set.

•All files are offline.

Since the files are offline after the recovery is complete, they are automatically recalled as needed. You can also manually recall them using the fsefile command.

•File indexes (Windows specific) and I-node numbers (Linux specific) are different from the originals after the recovery.

•File access and creation times are the same as their originals, but other file time attributes may not have their original values.

The File System Catalog may contain multiple file system object entries with different file IDs mapping to the same pathname on the HSM file system, most probably as a consequence of move, rename, or delete and create operations. The recovery process detects such objects and handles them appropriately.

File system objects that map to the same pathname are recreated as follows:

HP StorageWorks File System Extender Software user guide 237

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.

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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.

HP File System Extender (FSE) manual Status of user data on the recovered HSM file system

Models: File System Extender (FSE)