[CentOS] What NAS device(s) do you use? And why?

> IBM sells some nice one rack units as well.

speaking of.    anyone have any experience with the IBM DS3500 storage?

I've been considering the DS3500 for my dev lab storage.   These come 
24x2.5" (or 12x3.5") SAS 2U boxes with redundant storage controllers 
that have 2x2 SAS host ports and either 2x4 gigE iscsi or 2x4gb FC 
ports.   you get to pay extra for more host partitions and stuff.   they 
are basically rebranded LSI/Engenio 2600 and come in both 12x3.5" or 
24x2.5" 2U SAS chassis... there's also SAS expansion ports you can add 
several additional storage bays to.

I have zero (0) experience with IBM branded storage.    I do have a IBM  
Bladecenter and Power 520 AIX server in my lab, so I'm not all together 
unfamiliar with IBM.