2000-10-13-17:42:32 Mark W. Eichin:
> Actually, systems like AFS (soon to be OpenAFS, in the next
> month or so...) *do* "perfect" backups, involving creating
> "backup volumes" (a useful thing to have around anyway,
> basically a nearly-free clone) and then the offline backups are
> made from those.
How could I have forgotten! I didn't know about AFS's backup
volumes, but I do know and value the analogous feature on NetApps'
filesystem WAFL, namely "snapshots". As you say, it's nearly free.
I dunno if AFS's backup volumes achieve the same thing, but you can
use WAFL's snapshots to keep online backups as well, which is really
fun.
-Bennett
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