Hot swapable NAS systems are never gonna be cheap
http://www.reghardware.co.uk/2007/01...net_disk_raid/
example
i think the box you linked to is cheap
In fact the Lacie device is reported to be the same device in a different case with 4 500 gig hdds costs 900 quid. The Intel box with 4 x 500 gig drives will be 350 quid less