Jacob Yocom-Piatt wrote:

quoted text
> - fast disks with hardware raid, i.e. u320 or sas, that are

> hotswappable; am willing to accept SATAII if other criteria work

Fast disks are usually hot.  Usually heat goes up with spindle speed.
> - low power draw / heat signature

quoted text
> - low noise

> - 1U or 2U size

The first two are almost mutually exclusive with the third.  1U/2U

servers have to move enough air to cool the expected maximum

disk/CPU/RAM combination running at 100% 24/7.  That means lots of small

fans, and small fans are noisy.
If you require 1U and performance isn't a primary requirement, an old HP

DL320 G1 may work.  They're substantially quieter than a DL360 (or

modern 1U boxes) and have a single P3 socket 370.  Newer DL1xx servers

may be quiet as well, but I don't see many of those.