Unfortunately for small businesses, the small business file server market has been abandoned by every vendor except Microsoft. Novell used to provide some competition before they went Loony for Linux. Their product actually had quite a few more features than SBS from Microsoft, but the "geniuses" killed it for a year or more waiting for the Linux version.
Now Novell has a Linux-based version again, at least I think they do, and no one cares. That's what happens when you leave the market to Microsoft – [t]hey take over. Of course, they had taken over the server market earlier because of Novell's long history of management stupidity, so this is just one more example for the Stupid Wall of Shame at Novell.