my ReadyNAS NV 2TB array
The ReadyNAS NV is a RAID 5 or X-RAID (which I'm running) drive array. I've got four 500GB Seagate ST3500641AS Barracuda 7200.9 SATA hard drives installed for ~1.5TB redundant storage. I use it primarily as media storage for my P4 media PC running Meedio on top of Windows XP, linked via wired, gigabit ethernet. I also tie to it from my Mac Pro.
This array serves primarily as the media store, out of the way down in the computer room, for my entertainment center.
The ReadyNAS NV has an IT3107 processor at its core.