Release, Default migration policy | HP File System Extender (FSE)

Example situations that trigger migration

There are four distinct situations that trigger a new migration job.

•Situation 1

There were no files added to the list in the last MinWaitTime period of time and there are more than MinNumMigFiles files on the list and total size of files on the list is at least MinMigSize.

•Situation 2

The period of time since the first file was put on the list is greater than MaxWaitTime.

•Situation 3

There are at least MaxNumMigFiles on the list.

•Situation 4

The total size of files to be migrated is equal or greater than MaxMigSize.

Default migration policy

Default migration policy is defined in the FSE configuration template for FSE partition configuration. For details, see ”Template for FSE partitions - Migration part” on page 302.

Release

In contrast to migration policy, the most important release policy parameters are watermarks. The watermark parameter values define when the release process is triggered. You define configuration parameters relevant for your release policy in the FSE partition configuration file. You should check the default watermark parameters for your release policy and adjust the settings according to your environment.

You can also exclude specified files from the release process. This allows you to specify files or sets of files which should be skipped during a release operation so that they remain permanently online. Exclusion from release is described in ”Exclusion from release” on page 131.

Watermarks

FSE prevents HSM file systems from becoming full using special parameters called watermarks. They are based on a simple principle of defining the value for the normal, high, and critical occupation of disk space. Watermark parameters are the trigger for releasing the file data from the file system.

Typically, when the HSM file system volume reaches a certain percentage (defined with a watermark), all files that meet defined criteria are released from the disk. This results in freeing up capacity on disk systems thus providing space for new files and files that will be recalled.

For each configured FSE partition, three watermarks are defined in the FSE partition configuration file: low, high, and critical. Their values must follow the rule low watermark < high watermark < critical watermark.

Critical watermark

When this watermark is reached, the forced release job is started. All files that are on the release candidate list are released, regardless of other conditions—retention times and minimum file size are not checked. The release job is stopped when the high watermark on the HSM file system is reached. Files not released during the release job remain on the release list.

HP StorageWorks File System Extender Software user guide 129

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) Release, Example situations that trigger migration, Watermarks

Models: File System Extender (FSE)