The Drobo is very, very cool.  The only thing I’ve found so far that’s slightly annoying is that when you format your drives you have to tell Drobo how big to make the partitions, 2TB, 4TB, 8TB or 16TB.  Even if you don’t have that much hard drive space, you can tell it to use 16TB and Windows will see the drive as a 16TB drive, which can be a little confusing.  If you select one of the smaller amounts and then add more space down the road, Drobo will simply create another partition of the size you selected.

The other issue I ran into isn’t with the Drobo, but with the 1.5TB Seagate Barracudas that I bought for it.  Apparently there’s an issue with the firmware on the drives and it needs to be flashed.  While this normally wouldn’t be a problem, when using the drives in the Drobo you essentially have to pull all four drives out, unplug the main system drives and plug the Seagates in one at a time.  Boot from a boot CD, run the flash util, power down and do it again.  Not difficult, just a pain.  That will be my project for this evening, I guess.