[ale] cheap network attached storage?

[jloden at toughguy.net (Jay Loden)]

I'm looking to pick up a network attached storage device, something along the 
order of these (home size, not enterprise ones with lots of zeroes in the 
price): 

http://www.tigerdirect.com/applications/category/category_slc.asp?CatId=207

I want it for running backups from a couple Linux machines over a 
network...however, none of these devices says anything about how it works, 
just that they "appear as a drive on each computer on the network" 

Fine if you're running Windows, but what about Linux boxes? Does anyone know 
of a solution like this that will let me run backups onto a drive over the 
network when I'm running Linux? I'd prefer not to set up Samba just to talk 
Windows-speak to one of these devices.

-Jay