Originally posted by: cmetz
I don't do clusters but I deploying colo/hosting by the rack, and standardization helps keep me sane.
2U or 4U, we build our own based on stock PC parts (carefully selected of course). Yeah it can be a pain but it also has major benefits.
1U we do Dell or Compaq. I'm not thrilled by either, but they're reasonable. 1U is so delicate I wouldn't try to build it myself, and I would get good warranty service.