exchange 2010 sp1 vmware strange cpu usage (hp vsa clustering)

[kobi19860]

hi

i have vmware enviroment on hp vsa clustering( 3nodes). hp vsa 

i have install exchange 2010 sp1 on my esxi,

one day suddenly after usage of two years

my vmware exchange server become very slow.

i looked up the cpu usage.

i dont know what is the cause for this sympthom.

all my logs are fine,my biggest mailbox is 10 gig.

i have alot of free space,why my cpu is not balance.

you cannot observe at the process tag what is the cause for that sympthom.

i have another exchange 2010 sp1 on other phisical machines  i dont have any problem,the problem is just on my vm enviorment.

can you help me?

how can i know if my hp vsa is good performance

[oikjn]

use perfmon to track IO/letency/IO size/throughput/que length an watch CMC for the same stats for your nodes and affected LUNs.  If both nodes are on the same hardware, it sounds like the problem is a software bug.

[kobi19860]

i have 3 phisical machines that host exchange 2010 sp1 i dont have problems at all.

please see that link:

http://social.technet.microsoft.com/Forums/exchange/en-US/8498b76a-50f9-4c79-ac5f-9df827330516/exchange-servers-in-vmware-at-100-cpu-after-power-outage?forum=exchange2010

[oikjn]

can't see the graphs, but if you have three other servers that are going fine,  graph all three and see if there is any difference.  If you see something different on the SAN performance than the others then you can narrow it down depending on what you see, but if it all looks the same then its probably a software issue.