getting high CPU usage on Win2k8r2 server

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?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

The first step is to check which process is causing the high utilization.  You should be able to see that in Task Manager.
Tom CieslikIT EngineerCommented:
Whoever introduced AMD processor to the server should go to jail :)
I'm kidding but AMD is not a good processor for server.

My server has BE installed on DC with Hyper-V feature and 5 virtual machines and in moment of backup processor usage is not going above 45%
Backup Exec is not using a lot of processor time. I would look for process that taking that much processor time.
Check your virtual memory allocation. Maybe swapfile is too big or too small and that's using processor. Also check how much handles and threads are active in your system

Quite probably a problem caused by connecting tape drives to PERC controllers, they ought to be on SAS HBAs rather than RAID controllers. The only manufacturer that supports tape drives on RAID controllers is HPE as far as I know, and that's OK because they write the controller firmware so it's designed for that use.
jkimzlgAuthor Commented:
turns out it was Kaspersky.  It was accidentally deployed to the backup server and scanning every single file causing it to slow down or fail.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
jkimzlgAuthor Commented:
it was kaspersky
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.