2012R2 Server POSE w/2 VOSE

Have a 2012R2 server in the following environment:

POSE: Dell PowerEdge T610, RAID5, 32G memory, E5620 Processor, Hyper V Host / File server (2012 r2 server)
VOSE1: PDC (2012 r2 server)
VOSE2: Exchange 2013 Server (2012 r2 server)

About every 45 - 50 days the server slows down substantially, continues to work but crawls along extremely sluggish. One noticeable condition is VOSE2 CPU increases to 35 - 40% from 5 - 9%.

Anyone seen this behavior? Have any recommendations and ideas what may be happening.
LVL 17
WORKS2011Austin Tech CompanyAsked:
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.

Philip ElderTechnical Architect - HA/Compute/StorageCommented:
How many disks in the RAID 5? Is there a battery backup connected to the RAID controller? is it healthy if yes?

Check the Processes tab to verify what is causing it but probably an Exchange clean-up task is running.

I suggest RAID 6 as a starting place for any virtualization disk setup with hardware RAID and non-volatile or battery backup cache. Just do a search for "punctured stripe" to get an idea as to why.
0
gheistCommented:
Do both guests leave enough RAM to satisfy minimum requirement of host?
0
WORKS2011Austin Tech CompanyAuthor Commented:
@gheist
Do both guests leave enough RAM to satisfy minimum requirement of host?
If I understand correctly  it's 25% of overall ram for the exchange server is this correct? Do you have specifics which each host should be from the overall 32G.

@Phillip Elder: will research RAID6 and punctured stripe. I can't recall what the service was running last night off hand, it had to do with fast searching in exchange, interesting you mentioned exchange. I'll find out what the service was and let you know.
0
Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.

gheistCommented:
2-4GB min for each of 3 machines, i.e 28GB max for both guests.
0
Philip ElderTechnical Architect - HA/Compute/StorageCommented:
We configure vRAM to Physical RAM - 1.5GB.
We configure a static swap file of 4192MB on C: for the host (no swapping needed)

Exchange 2013 is designed to run in RAM with very little actual I/O to the disk subsystem. It can, in fact, run a very substantial number of mailboxes on a very small disk set so long as there is RAM available for it to work with.
0

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
gheistCommented:
That was the next step... First we need to make sure no swapping in host, then we dig on guest performance...
0
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
Windows Server 2012

From novice to tech pro — start learning today.