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HP File System Extender (FSE) manual Fsefile --history FileName

Models: File System Extender (FSE)

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Description

After a migrated file is modified using a third-party application, its new generation is migrated

 

using a different file ID.

Explanation

The cause for this problem is the way the third-party application is handling the modification

 

process. Such application creates a copy of the current file first and then modifies the copy

 

instead of the original. After the copy is saved, the application renames the copy with the

 

original filename and thus replaces the original. Examples of applications that use this

 

approach to handle open files are vi (plain text editor) and Microsoft Word.

Workaround

Older generations of a file that was edited in such an application can be retrieved only using

 

their file ID. To display the list of all migrated file generations, enter:

 

fsefile --history FileName

 

In the command output, search for a particular file generation and determine its file ID. Run the

 

following, specifying the file ID:

 

fsefile --recall --id PartitionName FileID [--into Path]

Description

Running the commands fsefile --migrate and fsefile --trigger-migration in sequence does not

 

start migration job.

Explanation

fsefile --migratedoes not add files to the migration list, but rather to the dirty file list. As

 

the fsefile --trigger-migrationcommand only considers the migration candidate

 

list, running it shortly after the file was added to the dirty file list does not have the desired

 

effect.

Workaround

When a file is added to the dirty file list, you should wait until the minimum file age interval

 

expires before running fsefile --trigger-migration. This interval is defined by the

 

MinFileAge variable in the migration policy of the respective FSE partition.

Description

File migrations in an FSE implementation with FSE server running on a Windows host appear to

 

run slow.

Explanation

The Removable Storage service may be running on the Windows system. This operating system

 

service interferes with the FSE processes causing a serious performance degradation of the FSE

 

migration job.

Workaround

Stop the Removable Storage service and disable its automatic startup. Proceed as follows:

 

1.

Run Services by selecting Start > Settings > Control Panel > Administrative Tools > Services.

 

2.

In the Name column, search for the Removable Storage entry, right-click it and select

 

 

Properties.

 

3.

In the Startup type drop-down list, select Disabled.

 

4.

Stop the service by clicking the Stop button.

Description

Changing partition configuration parameters does not affect files on dirty list.

Explanation

If the MinFileAge parameter is modified to a high value and then back to a lower value, the

 

results only come into effect after the expiry of the higher MinFileAge for the first time. After

 

the expiry of the higher MinFileAge then the new (lower) value is used from that point on.

Workaround

Wait for the higher MinFileAge to expire or remount the HSMFS that is affected.

HP StorageWorks File System Extender Software user guide 261

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HP File System Extender (FSE) manual Fsefile --history FileName, Fsefile --recall --id PartitionName FileID --into Path
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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.