Dell PowerVault NX3100 Network Attached Storage

Essentially, the NX3100 is sold as an appliance. So, it's not designed to be a full 'server' in that sense. It's sold with an operating system, and that's the only operating system that is supported on that box.

Basically, Windows Storage Server 2008 is the only validated operating system for your appliance. Specifically that image disk that came with it is the only validated operating system for your appliance.