Meistermn,
We tested NetApp and Compellent in our data center at Scott County, Mn two years ago and found the performance to even. Scott County, Mn is one of the fastest growing Counties in the Nation. Our test comprised with pushing different data sets (large and small and hundreds of thousand of files) to each accross ISCSI. We selected the Compellent for its GUI interface and dynamic capacity, data progression, and replication software capabilites as well as its easy replay software. It wasn't until we got it into our data center that we began running all of our VMWARE instances on the Compellent. We looked initally to the Compellent SAN for storage conolidation and found with VMWARE the combination, we were able to accomplish server consolidation and Disaster Recovery as well.
We run two compellents controllers in our production data center and one in our DR location. We currently have nearly 30 windows instances (exchange, SQL , etc) on the SAN. Using VMWARE and Compellents replication SW, we are able to make our instances highly available. Works like a champ! I have been impressed with the reliability and customer service of Compellent. We did test the IBM DS3000 and did not like the command line interface and lack of software. Performanc wasnt on par with NetApp and Compellent either. I would stack Compellent up against EMC or Hitachi any day.
Good luck.
Perry