Our first storage in our first steps towards virtualisation. It worked fine and was very reliable, though the throughput tended to be a bit slow. We used it for another four years after the service agreement ended.
Pros
"Service from EMC was extremely good. Whenever a disk had a problem, EMC was right on top of it. In some instances, they called me before I even knew what was going on."
Cons
"It needs better deduplication. Deduplication was costing too many resources, hence we never used it."