scott at mirrabooka.com
Wed Nov 26 06:11:36 UTC 2003
Eric J. Feldhusen wrote:
> On Nov 25, 2003, at 9:40 PM, Scott Burns wrote:
>> Eric J. Feldhusen wrote:
>>> A computer with 4 - 100GB hard drives in a RAID 5 (parity) set up, 3
>>> drives are active in the RAID 5, 1 hot spare drive, Total storage
>>> 200GB, actually a little less due to overhead. In this
>>> configuration, one of the drives in the raid fails, the hot spare
>>> becomes active, the raid rebuilds, and you replace the dead drive
>>> with a fresh drive and this drive becomes the hot spare. In this
>>> case, you can have 2 drives fail and the system can keep going.
>> Same deal as above, what happens if a second drive fails during rebuild?
> I haven't had it happen yet, but "in theory", with the setup above, it
> "should" continue to work, but you're really want to get another
> couple drives in that machine fast.
You might want to give this a try if you have a spare machine available.
Fedora + software raid to make a 5 odd partition RAID5 set and then
kill one partition. Midway through the rebuild with a hot spare, kill
another partition. I'm certain that if RAID5 loses two of it's disks at
the same time, it's gone.
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