I have only two very wimpy factoids to offer: my 70TB HP SFS
disk array (36 SFS20 shelves with 11x 250G SATA each) has had just one bad
disk since it was installed (say, March).
so that's one disk in 1.7Mhours, aggregated, actually a lower rate than I
would have expected...
I never see disks fail this way. Go unplug the array and turn it back
on. Tell me how many disk fail then. :-)
hmm, it's true that the disk arrays have only had a few power cycles
(but they did spend their first few months on line power, and they
had 1-2 manual cycles for firmware updates since). but I thought the
1536 80G disks in nodes were more interesting, and they've certainly
had more than a few power cycles.
regards, mark hahn.
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