I was long looking for a small, yet professional server for my development environment. If you buy to this unit even for just under 200 euros, the necessary operating system software to (eg Windows Server 2008 or 2012. Foundation), can get started smoothly, and host its websites in your own 4 walls. The computer is extremely quiet and was Constellation plates in my case with 2 x very fast 500GB Seagte equipped. This can be easily operated as RAID. Who wants hot plug, but must replace these two 3.5 "" disks, against corresponding 2.5 "disks. Then up to 4 disks can even be installed in the device! Summary: great machine !!!