I have 6 DATA Stores and each corresponds to a physical hard disk. I am planning to create quite a few VMs on my ESXi host. Most VMs will also have a virtual hard disk of its own to store data.

I have the following VM types:

VM01: Domain controller 01(win 2003)

VM02 : Domain controller 02 (Win 2008)

VM03: Domain controller 03 (Win 2003)

VM04: Exhange server 2007

VM05: File server 01 (WIn 2003)

VM06: File server 02 (Win 2008)

VM07:Security server (MS ISA 2006)

VM08: Firewall (pfsense 1.2)

Whats is the best practice to locate these VMs among the available datastores to get the best possible performance.