I'm getting intermittently high CPU usage on Win2k8r2 Standard server. just a little while ago I wasn't even able to rdp in. my main issue is that we have Symantec Backup Exec on this server and the jobs are failing or going really slow most likely due to this high CPU usage. At times it would be at 90 - 100%.
About this physical server:
Dell PowerEdge 6950
The C: drive is in a Raid-1 configuration and is either SAS or SATA drives.
Dual-Core AMD Opteron Processor 8218 2.59 GHz (2 processors)
12 GB RAM, 64-bit OS
Raid controllers: two Perc 5/1 Adapters and two Perc H800 Adapters (all attached to 4 Quantum tape drives)
I'm thinking that this may be a hard drive issue. Or it could be a driver issue with the RAID controllers. What is the best way I can go about diagnosing the hard drives on a server? I've already contacted Symantec and Quantum and I don't believe it is their issue. Quantum firmware and drivers are completely updated to latest version. Any other feedback would be helpful?