QUESTION OF THE WEEK:
This is policy-based management of file backup and archiving in a way that uses storage devices economically and without the user needing to be aware of when files are being retrieved from backup storage media.
a. ADSTAR Distributed Storage Management
b. content management system
c. spend management
d. Hierarchical Storage Management
e. Environmental Resource Management
Were you correct? This week's answer is:
d. Hierarchical Storage Management (HSM)
HSM adds to archiving and file protection for disaster recovery the capability to manage storage devices efficiently, especially in large-scale user environments where storage costs can mount rapidly. It also enables the automation of backup, archiving, and migration to the hierarchy of storage devices in a way that frees users from having to be aware of the storage policies. Older files can automatically be moved to less expensive storage. If needed, they appear to be immediately accessible and can be restored transparently from the backup storage medium. The apparently available files are known as stubs and point to the real location of the file in backup storage. The process of moving files from one storage medium to another is known as migration.
An administrator can set high and low thresholds for hard disk capacity that HSM software will use to decide when to migrate older or less-frequently used files to another medium. Certain file types, such as executable files (programs), can be excluded from those to be migrated.
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This was first published in April 2002