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Thursday, January 13, 2011

Disaster Recovery Planning for Large Archives —

Disaster Recovery Planning for Large Archives
Jan 13, 2011, 22 :34 UTC (0 Talkback[s]) (322 reads)

(Other stories by Henry Newman)

"Disaster recovery (DR) is often discussed in broad terms throughout the storage industry, but in this article I will explore a specific segment of the overall market: DR planning for large archives.

"This is the first article in a two-part series on archives. The next article will cover architectural planning for large archives.

"First, what are my definitions of an archive, and what is a large archive? An archive is a repository of information that is saved, but most of the information is infrequently accessed.

"The definitions of archives have changed recently. Just three or four years ago, archives were always on tape, with only a small disk cache (usually less than 5% of the total capacity). The software to manage data on tape and/or disk is called hierarchical storage management (HSM) and was developed for mainframes more than 35 years ago."



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