I am taking over management of a VMware ESXi host (the hypervisor runs off an internally-connected USB drive) that is running four virtual servers.
The physical machine is a Dell PowerEdge R720 server with 2 Xeon E5-2630 CPUs @2.30 GHz, 32 GB of RAM, and one RAID-5 2 TB array.
All four virtual servers are sharing the RAID-5 array which is made up of five 600 GB SAS drives plus another 600 GB hot spare.
The four virtual servers are the following:
1 - Server 2012 domain controller/file server
2 - Server 2012 Exchange 2010 server
3 - Server 2003 R2 MS SQL server
4 - Server 2003 application server
The performance of all four virtual servers either through the vSphere Client console or direct remote connection is extremely sluggish.
The Exchange 2010 server in particular is experiencing severe performance problems with slow and intermittent Outlook Web Access from both inside and outside the company network, slow Outlook access, etc.
Has any Experts Exchange members come across a situation like this before?
How can I pinpoint which components of the system is causing the sluggishness (bottleneck)?