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Posted by Bob on 11/09/43 11:33
On Thu, 01 Dec 2005 08:52:35 GMT, NunYa Bidness
<nunyabidness@nunyabidness.org> wrote:
>>Mirroring is not backup. Anyone who thinks so is just fooling themselves.
>>When the hard drive controller loses its mind an re-formats your disk,
>>you've lost your "backup".
> You're nuts for assigning a single definition to a term.
You are correct.
I once had an Enermax DynaBacker which is a RAID 1 unit with removable
trays. It supported mirroring and backup modes. Or you could let it
mirror and swap the second drive on the fly. That way you had an
archive in case something went wrong.
It was a nice unit but it suffered from development problems and was
recalled from the market by the company I bought it from. I had to
return it or get stuck with it for life, so I bought removable drive
bays instead and clone backups manually.
You need a three disk system do you can make 1 day backups and 1 week
backups. Swap two disks back and forth for a week and then swap one of
them out to the shelf for disaster recovery.
With SMART it is unlikely you will lose a disk without 1 day warning
which means you really do not need RAID if you maintain periodic
backups.
--
"One must realize that the world is a network of real and virtual
combat zones where the stakes are high, struggle is the primary
mode of being and only total victory is acceptable.
-- Sun Tzu, "The Art Of War"
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