Looking into purchasing a SAN, pretty early stages at the moment, but am hearing different things regarding running VM's. Are any of you running ESX server with an iSCSI SAN? how is it working? any noticable difference between running VM's over a iSCSI san vs a FC one?

Also, is anyone familiar with Pillar Data Systems? specifically the Axiom 300? I like the idea of the unit.. specifically removing the need to have to deal with setting up raid groups, etc, you just basically create LUNs and give them a priority. not sure if things like EMC/EqualLogic work the same way