Question on how RAID works
KZander at CommPartners.com
Wed Oct 8 17:10:01 CDT 2003
We have a PE 1650 running RH 7.3. It has 3, 36 GB drives in RAID 5.
One drive in the container went off-line. The server crashed: kernel
panic, I/O problems etc. Dell's phone support engineers where very helpful
and we got the drive back on-line and the container rebuilt. Physically
the drive seems to be OK.
My question is about RAID 5. If one drive does fail, aren't the remaining
two drives supposed to be able to carry on? I realize nothing is
perfect. Certainly my own case shows there are times when a single drive
failure can take down the entire server. For my own general edification,
how reasonable is it to expect RAID 5 to carry on with a single drive
failure? 50-50? 80-20? Just looking for some general guidelines so I
set proper expectations with the powers-that-be.
More information about the Linux-PowerEdge