Interesting technology…
NAS Gateways (abstract/virtualize storage - allow you to migrate files from one device/system to another *while* they are in use)… incorporate features of information life management - automatically migrate data from one tier of storage to another (higher to lower, lower to higher) based on pre-defined metrics. Can also be used to automatically migrate data from one location to another (nearer the typical user), etc.
Example product:
eWeek news article: NeoPath Streamlines NAS System Use (FD-220, newer version, is even cooler).
Automate deployment of Linux servers, using virtualization: