We have a Dell PowerEdge SC1425 with a built in SATA raid. We have recently rebuilt the machine with SBS 2003 R2 and replaced the original drives with 500gb SATA II Drives. See spec below. The machine also running Virtual Server 2005 SP1.
The machine hangs when the virtual server runs an NTBackup, and anything that requires high disk activity.
I am aware that the built in raid card is SATA I and we have used the jumpers on the drives to limit the speed of the drives to SATA I speeds but the system still crashes. We have had the motherboard replaced under warranty as we are suspecting a Raid card problem and we still having the same problem. The drives are brand new and pass all the Dell Diagnostic tests. Dell said that the Machine should run fine with the new larger 500gb SATA II drives. However I still suspect a problem with the Raid card and the SATA II Drives.
The raid card seems to be the same as the Adaptec 1210SA which i have see a number of posts of people having problems with but not the same ones as us.
We have tested the Virtual server on 2 other different hardware configurations one SCSI raid and the other single SATA drive connected to an on-board controller in different hardware and the virtual is working fine and the backup runs fine so we know the virtual is fine.
We are currently rebuilding the machine Host OS with 2003 std server as Dell say that SBS is not a supported OS on that hardware.
Dell PowerEdge 1425SC
2 x 500gb Western Digital SATA II drives
Dual 2.8Ghz Xeon Processer