Does anybody know how to find exactly which harddrive needs to be replaced in a raid5?
It depends on your RAID controller. Your RAID configuration window should tell you which drives have failed - and your ports should be identifiable based on that information. Be careful because it's easy to get them backwards if the ports are not actually labeled and you're only given a diagram.
I'm running server 2003 sp2 and it seems like the only way to get to the raid configuration is from the post there's noway to check any configurations from windows.When I do check the configuration it tells me that ther are no conflicts with no option to go any further from there.The way I got the drives identified was that when the raid fails I use this program called driveswap32 to unmount the raid I also use driveswap 32 to mount the raid.When I mount the raid I put the drives in on at a time and when windows recognizes the drive it pops up in disk management with the # from the order it was put in.By the way I have ten harddrives.Now when I open up driveswap32 just to check on the drives only 8 is showing up.And driveswap32 labeled the drives with a,b,c....so I don't know if it list the drive in the same order as I did just that 2 is missing but the drive did not fail.When I access certain folders in the raid the raid fails immedialy.But other folder's will cause the raid to fail only after excessive access.
Ouch - 2 dead drives on a RAID 5 with only 1 parity drive is bad news. It sounds like you might be using software based RAID5 and I'll really be no help there. I've never had to troubleshoot software RAID5 before.
I would visit the Website of the Raid controller Mfg for Software and utilities.