Netgear ReadyNAS 1100
Asked to sell this by a friend..
Latest firmware 4.1.9 (June 2012)
Includes rack mounting kit (1U)
4 x 500GB disks (one is dying, so will need replacing)
RAID-X system allows you to upgrade to larger disks...
Solid reliable little machine! Loads of patches/add-ons developed by the community (UPnP, DNLA, web server, iTunes, etc)
£70 plus postage?