On Tue, Aug 08, 2006 at 04:43:29PM -0600, Dylan Griffiths wrote:
> It's often cheaper to have a spare mobo, power supply, and RAM than it
> is to buy even 1 machine a redundant power supply!
This sounds like demoting a potential warm spare to spare parts. If you're
going to go redundant everything, why not just build a redundant machine.
Then whatever fails, you can still do work without touching a screw driver.
Even Windows licensing is becoming accomodating to warm spares (at least for
server software).
Dylan, you mention UPS but that too can be a single point of failure. The
UPS can even be the cause of a blown power supply (been there ... figured
it out on the second replacement PSU).
RAID has it's place but in general, I don't think it is the Pareto optimal
solution for most desktop PCs. I used to think it was great, it kept me
running through a disc failure but it didn't help me when the filesystem got
corrupted. It also wouldn't have helped me when my fat fingers accidentally
deleted my Maildir (recovering deleted files on UFS is fun! ...not). It
also wouldn't help in case of a number of other possible disasters.
RAID is a nice luxury but I think a desktop PC will get greater benefit from
a near/off-line backup.
Received on Tue Aug 8 17:14:55 2006
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