I currently use a Clariion CX3-20 with 2 DAE's (300G 10K SAS) for all of my Hyper-V R2 virtual machines and am quite happy with it. I am pretty much out of space and can either purchase another DAE or put all new VM's on a Dell MD300i with 1 MD1000 attached to it. The 3000i has 15 300 Gig 7.2k SATA drives that is used for backups and an MD1000 that has a mix of 4 1TB 7.2K for backups and 4 300Gig 10K SAS drives used for test Virtual Machines.
Would it be better to go ahead and buy another DAE for the EMC or just add some drives to the MD1000 for more VM's and move to IScsi? I am concerned with the processing speed of the Dell solution versus the fiber channel SAN. Bandwidth really isn't a concern as we don't even come close to 1 GBps on the fiber channel SAN.