Just thought I'd post a coupl've pics of my little home storage server that I put together over the weekend. Pretty happy with it, even if it does look a little unbalanced (as the second picture shows...)
(Full size - http://www.banzaiinstitute.net/ment/server/server1.JPG
(Full size - http://www.banzaiinstitute.net/ment/server/server2.JPG
Runs pretty quiet. The 3 HDs are mounted in a HD cage from an old Antec case, complete with an 80mm fan running with LNA cable from the motherboard header, which is set at 50% duty cycle. The rear slot covers have been left off to allow a fresh air intake for this fan. The HD cage rests on a thick piece of acoustic foam, and is secured lightly to the case with a coupl've chains of cable ties - the case is never moved, so a really solid mounting mechanism isn't necessary.
I also removed the stock HSF from the chipset on the motherboard and added an old Thermalright HR-05 I had lying around - it does fit, if a little squinty! Lines up perfectly with the case fan, and neither it nor the CPU get too warm, even under heavy load.
Spec is fairly obvious - D945GCLF2 w/1GB of DDR2, Samsung 120GB IDE drive for boot, IDE DVD-Rom, 750GB Samsung and 250GB Western Digital drives, and some no-name PSU. Everything is second-hand apart from the motherboard