I have an ASUS motherboard which uses an ICH10R chip and Intel Matrix RAID BIOS. I’ve had 3 Caviar Black 500GB drives running fine as a 1GB data drive (“Monster”) on my Windows 7 64-bit desktop for a year.
Yesterday, I noticed a long pause, and checked the event log. It said there had been IAStorDataMgrSvc “Disk on port 0: failed”, and “Volume Monster: Degraded”. The Intel RST application said that Disk 0 was offline, and the RAID volume was Degraded. It looked clear-cut - the drive had failed.
I took the failed drive out of the RAID set to put it back online. Finding it hard to believe that the drive had failed ‘just like that’ I (maybe foolishly) added it back to the array, and the rebuild completed successfully early this morning, although there were a couple of ‘iaStor error 9: device timeout’ events during the rebuild.
Today, I am noticing long delays accessing some of the volume’s files. I need to work out what’s faulty, but there are no new errors in the event log, and the WD Data Lifeguard Diagnostic software doesn’t seem to work with RAID.
Another google suggests that it’s not definite that the drive is faulty, and it could be a cabling or motherboard fault. I tried reconnecting the drives yesterday, in case there was a bad connection.
How can I properly diagnose the faulty component?