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Terje Kvernes wrote: |
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>Kevin van Haaren <kevin@×××××××××.net> writes: |
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> |
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>>(perhaps should be moved from the security list, although backups |
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>>are an essential part of security). I've got an old OnStream ADR |
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>>drive I want to get working on my Gentoo server (using AMANDA) but |
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>>haven't had time to mess around with it lately (fatal last words I |
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>>guess). |
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>> |
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>> |
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> |
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> these days, tapes are very rarely the best solution available. |
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> |
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I think a properly implemented tape backup still has it's place. Done |
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properly it gives you the ability to recover older versions of files. |
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The media is reusable and higher density than CD-R or DVD. It's |
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reasonably fast, and takes up less space than a multiple hard drive |
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solution. |
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But it really is only one phase. I prefer a 3 phase system: |
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1) RAID for fault tolerance |
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2) tape backup for system/file recovery |
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3) optical media for archive |
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At work we've had a rash (3 systems out of several hundred) go bad with |
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multiple hard-drive failures, so RAID wasn't even sufficient fault |
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tolerance and we had to fall back to restore from the previous nights |
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tapes, but our most common use for tape backup is recovering older |
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versions that were accidentally deleted/written over or corrupted. |
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But archives must last a longer period of time than tape so a well cared |
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for optical media gives longevity that tape just doesn't have. |
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-- |
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