We have a legacy PowerEdge 2850 with what appears to be a two-channel PERC in it.
The boot drives for this ESXi host are in slots 0 and 1 and work great. However, we had a failure on a pair of 143Gb SCSI drives on the second channel. Being largely clueless about replacing the failed disk, we fumbled around for a bit and thought we got it up and running, but now the volume seems to intermittently disappear when it's under load.
I now think that this is because the SCSI chain isn't properly terminated. After days of looking at technical docs, I'm still unable to determine if the drives are terminated on the drive unit, or if the termination is on the actual drive cables (I suspect the latter).
Could someone please point me to some docs or toss me a clue that tells me:
1. How the termination is made, whether on the cable or the disk.
2. If it's on the cable, how to get to the drive cables to check where they are terminated. If it's on the disk, do I have to take the drive out of the sled to find the jumper?
Sincere thanks in advance.
Bob