I manage about 1200 servers for a software test lab of 9 departments. I work with many different types and generations of hardware. I can tell you from experience, I would absolutely HATE this machine, no matter how fast it performs. No console? Only network communication? Horrible idea. I've been dealing with a few NetApp units that were set up this way. They are a major HEADACHE to manage. If the information on the IP address for this machine were lost, it would be almost impossible to get it to work again. There are admins out there (like my predecessor at my current job) who don't do much for documentation. Small businesses typically don't even have their own admins, so imagine a business switching admin companies because of pricing debates, and a new guy comes in after a drive failure. Basically, he's have to tell them their nice storage system is useless because he has no idea how to get into it to tell it to rebuild to a new drive. They'd have to replace the whole thing.
For the hardware price, I'd go for a Dell R510. it's about the same price. Then I'd run CentOS 5 or 6 on it. CentOS can do most of what this thing can do with no cost. Or the business could opt for Win 2k8 r2 for $600 more or MS SBS for $800 more and get an easier to manage system that any yahoo proclaiming to be an admin could fix.