A pretty slick 1U appliance. Barracuda does good job of simplifying backing up an enterprise. Unfortuantly when making things simple, it often times becomes hard to get certain jobs done. One of the issues we had was deselecting certain files/folders from being backed up, AND having a filter also excluding some of those same files creates really long error logs. Another thing that I find annoying, is that when one is manipulating a job, such as excluding a folder it takes a long time for the UI to bring up the folder/file list, because the information is being read from the client, up to Barracuda's main servers, then back down to your webpage; even if you are in the same room!
It has a pair of SATA drives in it; it does dedupe & compression. There is an option to replicate jobs to "the cloud", which is really just Barracuda's main site. In this case the client has 400gb max. cloud storage; so only their crucial stuff gets replicated.