We are embarking on a project to replace out current SAN and Virtualise (with Vmware Vsphere) our environment. On the SAN/server front it comes down to two vendors SUN/Oracle or Dell. Price and specifications of the servers and the storage capacity of the SAN's are on par with each other so there's not to much you can split them on.
We'd be looking at either Dell EqualLogic PS6110XV & PS6110E with the PowerEdge R710 server (for the VM cluster) or it's the Sun Fire X4170 M2 (for the VM cluster) and ZFS Storage 7320 Appliance. Like I say price wise they're just matching each other so we have to take other things in to account
Hardware Support cost moving forward
Flexibility to expand later
Cost to expand later
features available out of the box
I'm sure there's going to be lots of opinions out there!