perc 4 problems with raid5 disk 0

[jsandreas]

hello group

I have a perc 4/DC Controller 0. the first physical drive Array Disk 0:0 has failed. Or at least it seems so. When I boot the system the linght blinks amber. However if I put the drive in the 4th slot Array 0:4 then it stays lit up leading me to think that the slot 0 has failed. My system is running raid5 strip 3 disks. Can I remove array disk 0:0 and place it in array 0:4? And how do I go about rebuilding the array as not to loose data

Regards

Scott

 

[technome]

If the disks are all on the same channel of the controller a disk can be moved to another slot (disk roaming). You can not move a drive from one channel of a two channel controller and have it function for an array. Sounds like the backplane is only using one channel but not sure. Physical description should be in the form of 0 (channel):0 (enclosure position):0(drive slot);if all drives are on channel 0, then they are all on the same channel as in 0:0:4, so if that is the case drive roaming is permitted, 0:4 could be used. If the 0:4 is really 1:0:4, the slot being on a different channel, it can not be used.

If all disks are on the same channel...
If the disk continuously fails in a particular slot it could be the slot but most likely is is truly defunct or, (this is a nasty), another disk in the array (not showing any issues) is causing it to fail.
Since the disk does show, assuming a green light, go into OMSA or the bios, make sure it is on line, attempt to start a rebuild. There is a good chance the disk will fail again (if the disk really has an issue) or another disk in the array will fail (if another disk caused the original problem). Adapter failures are extremely low, as are slot failures. Personally I would not play around, I would get a new oem disk and replace the failed disk. Even if the issue appears with the new disk you have ruled out the two drives are not the issue, and you will have a spare on hand.


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