Buffalo Technology has alwasy been Linux Friendly...but today I ran across a nice little bit of tech from them that really blows me away. A TeraByte in a Box. Basically, it is a box that has four 250Gig drives in it, and probably a small Linux computer. It supports all sorts of snazzy protocols to attach this array to your system.
About 8 years ago, I built a three quarters of a terabyte array using Linux's software RAID, 4 SCSI controllers and lots of Seagate Cheeta drives. The fact that I can now get a full terabyte that will sit on my desktop is just astounding!
Read about the beastie here