I am planning the purchase of a 12 TB raw SAN that will be used with vSphere 5 and two DEll R710 servers for aq virtual implementation. I will be running 6 VM's at first to start and then I will virtualize Exchange 2007 for 150 users (by that time possibly 2010) next year.
I have looked at Dell Equalogic's 4100E and HP Lefthand P4300G2. My goal is to get the very best solution for my needs and I would like it to be scalable for several years to come with the ability to add drives as needed. The Dell has 12 7.2 drives while the HP has 8 15k drives.
I know that the more drives that the SAN has the more iOPS I will get, but will I achieve higher iOPS with faster drives?
Which unit is the better choice based on anyones experience?