Sizing hardware spec for DSS

Hi open-e user,

I am newbie for open-e storage.
My company would like to build a small ISCSI SAN for running VMWARE.

At this moment, I have a x3650M2 with MR10i 3G SAS and 8 146GB SAS 6G 10k to work on.
By using this hardware spec, what avg IOPS I can get normally.

I expect it can serve 10 - 15 "not very heavy loaded VM guest".

thanks

Here is not so bad IOPS calculator:

http://www.wmarow.com/strcalc/