Look? Certainly should. Use? Maybe not. For example:
No AIX support
Not multi-tenant safe (mainly because of the lack of vlans)
No LAG, requiring MPIO for all hosts
No IP failover between interfaces, again requiring MPIO
No real tiering (rumor has it that QoS is on the way)
I do like these boxes. I'm moving all the loads I can from our NetApps. But there are some features that enterprises and service providers need that aren't there (yet?)
QOS is definitely something we would be able to leverage heavily. The only way I can control IO is through VMware by limiting IOPs from specific VMs. There was also talk of a way to pin specific volumes to SSD, which I haven't seen yet. We would certainly have an application for that as well.
We had looked at a product from FusionIO that is somewhat similar to the Nimble that is currently doing QOS, It's a little different in that they have onboard FusionIO cards instead of SSD, so they claim lower latencies for read and writes. There were a lot of red flags with that product however, no snapshots to speak of, no expansion options, and no compression.
We're happy with Nimble, and the flexible options for expansion Viv pointed at were a huge selling point for us.