Very slow Array access
Posted on 2012-03-24
I am having an issue with very slow transfer speeds to and from my RAID 5 array. Drives are WD 1TB Caviar black x3 in a RAID 5 configuration, RAID controller is a 3ware 9650 SATA RAID controller, no battery, so I have write caching disabled. OS is server 2008.
I'm moving files from a 2TB single WD Black which is on an onboard SATA controller.
Transfer speed is ~3MB/s.
However, I have done testing trying to load folders and looking at performance monitor, and I can tell that it is on the array side, not the other drive.
Any ideas how to diagnose such an issue? RAID controller does not detect any failed drives.