IBM has extended the Spectrum and Spectrum Protect branding to a wide range of products. There are two products with essentially the same functionality for hierarchical storage management, differentiated only by the operating systems that they support.
As its name implies, IBM Spectrum Protect HSM for Windows is specific to file archiving in Windows environments. IBM Spectrum Protect for Space Management is file archiving for Linux and AIX environments. Spectrum Protect for Space Management is primarily sold into Spectrum Scale (GPFS) environments.
Since the functionality is the same for both products, the initials HSM in the rest of this Brief refers to both unless otherwise noted.
HSM supports selection criteria and exclusions by file types, dates for access or creation, and owners. Stubs are left when files are migrated. An administrator can define migration jobs for each volume.
Migration jobs can be organized in several different ways, including different parts of a directory structure and different types of files. Thresholds can be set to trigger migration based on file system usage.
An administrator can also define recall quotas to limit the number of recalls during a specified time period. Quotas can apply to the entire system, to user groups, or to specific users.
Targets for file archives are through the Spectrum Protect server which can target native storage with a file system, tape, NAS, object storage, or cloud storage. When a migrated file is opened, it is transparently recalled to its original location.
Space Management for Files supports native file systems on AIX and Linux servers in addition to Spectrum Scale file systems.
An optional product, called Spectrum Protect for Data Retention, is available for legal hold/compliance functions, including WORM. The basic two archiving products do not have this functionality.
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