Migration

release policies) or at execution of the fsefile --trigger-deletioncommand (deletion policy). The parameters are described in comments inside the FSE configuration file templates.

You need to plan in advance to set the policies according to your environment and to optimize the jobs. The way you set up these policies will affect your FSE implementation’s performance.

The relevant configuration parameters for the migration policy are specified in the FSE partition configuration file. It is very important that you create a migration policy appropriate for your environment. You should check the default migration policy and adjust settings according to the characteristics of your files.

FSE migration policies are based on file age, wait time for migration, number of files waiting for migration, and the migration volume. Applying these migration parameters in combination creates archival (migration) and retrieval (recall) processes that make the most effective use of the underlying hardware and network infrastructure.

NOTE: You can make redundant copies of the file data during the migration job. For more information, see ”Multiple copying” on page 147.

What is a retried migration?

In case of a failed migration, where files would remain on the migration candidate list and would not be migrated, the migration of such files can be triggered manually from the command line or configured to be run periodically by a cron job (on Linux platform) or scheduled task (on Windows platform).

Use the following command to trigger migration:

fsefile --trigger-migration PartitionName

Adding files to the dirty file list manually

Sometimes it can happen that a file is present on the HSM file system but is not recognized by FSE at a given time. By putting it to the dirty file list the file is recognized and its attributes are preserved. Another file could already be migrated to the FSE medium that has its current status set to unreliable, and is only available for recall if no other copy exists. Such a file can be remigrated to another medium.

In such cases you should manually add files to the dirty file list as follows:

fsefile --migrate FileName

Once the files are added to the dirty file list, they are later moved to the migration candidates list and migrated regularly, according to the migration policy. If the specified file is offline, it will be recalled and then regularly migrated with other files on the list.

Note that zero-size files are always online; they cannot be migrated nor released.

Migration policy parameters

The configuration parameters for migration along with their definition and impact are listed below. The combination of these parameters allows a flexible configuration of migration behavior.

Minimum file age for migration (MinFileAge)

Definition	A period of time after file creation/change during which a file must be left intact to
	become a migration candidate.

Impact	You should define the parameter value according to the characteristics of your file data;
	if your parameter value is too high, for example 5 minutes, and the file is constantly
	changing (e.g. it is updated every 2 minutes), the file will not be migrated to media.

HP StorageWorks File System Extender Software user guide 127

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.

HP File System Extender (FSE) manual Migration policy parameters, What is a retried migration?

Models: File System Extender (FSE)