I'm going to roll out a VsPhere5 enviornment using 3 ESX hosts with about 4 VM's each. The budget is tight and the SAN is a huge part of the cost, and so I was looking at the Equallogic 4100e iSCSI SATA SAN (2x 1Gbps controllers) but I definetely dont want the enviornment to suffer because the SAN is too slow!! The Dell rep is telling me that the performance is excellent and for my setup it should work well. Would be looking at 12 x 3TB 7.2K drives running a RAID 50 for 15TB usable. The reason we need so much space is we are planning to replicate this setup in our other location and build DR plan using VMware SRM and SAN replication. The VM's would be all Windows boxes, 1 Exchange 2010, 1 SQL 2008 (using different LUN's for data and logs), 2 Citrix Xenapp, and various other Windows hosts doing less intensive things. The exchange, SQL and Citrix support about 75 users so it's not the heaviest load.
It's hard to do an iops study because we currently dont have the application servers in place, this will be setup to introduce a new ERP system into the enviornment (M$ Dynamics AX).
Any feedback on the SAN solution would be appreciated.