I posted the old URL to the Deployment Wizard, You should really use this one as it gives you the option as depending on weather you have an W14/W15...
But the biggest different is that a nimble storage array will not slow down when its full - whereas a ZFS array will as its WAFL when the array gets...
Then talk to Nimble - they will save you a shed load of space/cost as there snapshots are soooo much more efficient than the likes of IBM/Dell/EMC.
...