I have a file server running Server 2003 SP2 with a RAID 10 array on a 3Ware 9500S-12 card. Drives are Western Digital WD1002FBYS 1 Tb.
We have begun having severe disk performance issues with this machine and I cannot determine why. We have very bad fragmentation and we cannot defrag (hangs at about 3% no matter what software is used)
I would assume that I have at least one failing disk in the array, but the 3DM2 site shows healthy disks. The only indication I saw that there might be a bad disk was last night in the Drive section... one of the drives was highlighted in yellow. There were no alarms and I could not find any documentation on that that means (I assume its bad!). This morning, the highlight is gone.
The controller will give me a SMART readout, but it is all in hex and I cannot find any info online on how to interpret it.
All that said, has anyone encountered the yellow highlight before?
Does anyone know how to read the Western Digital Hex readout?
Is there anything else I can do that I am not already doing? At this point, I am tempted to start swapping out drives. 48% fragmentation is killing us!