CTR tracks HSM and ILM.This month, CTR continues its ongoing coverage of architectural approaches to data management with special sections devoted to HSM (1) (Hierarchical Storage Management) The automatic movement of files from hard disk to slower, less-expensive storage media. The typical hierarchy is from magnetic disk to optical disk to tape. HSM software constantly monitors hard disk capacity and moves data from one storage level to the next based on age, category and other criteria as specified by the network or system administrator. HSM often includes a system for routine backup as well. and ILM. Hierarchical Storage Management See HSM. is the policy-based management See policy management. of file backup, recovery and archiving. HSM originated on standalone, mainframe systems, but grew to the distributed network. We also continue to explore Information Lifecycle Management--a concept still in development. The implementation of ILM and its readiness for prime time is something each integrator must decide on a client-by-client basis. |
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