My company is doing virtualization using vmware 4.11 essentials plus. We need SAN but my experience with SANs and tech support is less than good. The EMC Clariion we got from an EMC dealer lost 4 drives due to it being misconfigured. EMC sent a new SAN out to replace it. My second SAN, a fujitsu works but took 5 hours to attach to an already setup rack with servers and swtiches. My rule is I don’t buy any SAN without getting it for a 30 day eval and I have to set it up..