Le samedi 18 Juin 2005 14:20, Earl Dunbar a écrit :
> SOFTWARE-based mirroring is NOT a good way to go, as your example
> proves. Mirroring needs to be implemented at the controller level, or
> better yet, dual controllers. Mirrored RAID-5 would be very good.
That wouldn't help either in case of allocation table corruption. The solution
is hardware raid (0 or 5) [dual controller is better but wouldn't help in
case of motherboard failure, not much different from a single controller
failure : there's still a single point of failure in the chain], backed up on
good ol' magnetic tape on a day / week / month scheme basis (the day tape is
kept localy, the week tape is kept at home, and the month tape is in a bank
safe). THAT is pricey, but worth it. And don't forget the yearly regeneration
of all mediums, to keep up with technology : I still have perfect, 30 years
old, good 8" floppies, but if my last working drive gives up, they'll become
mute on the spot, forever.
--
Manuel Viet
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