I rebuilt my home BackupPC
/ Perforce / Samba server recently. It runs 24/7 (but disks spin down overnight usually), so I wanted low power consumption, small is always nice, and quiet is nice, but it will be moving to a closet once I'm done tweaking on it, so quiet is third on the list.
It runs BackupPC
to automatically backup my desktop, my wife's laptop, my netbook, and my Mac. It runs munin to keep track of bandwidth, temperatures, disk usage, etc.
It's my Perforce server for home software development, and it's an always on Samba share.
Raidmax ITX-0907-BP ITX Computer Case
Intel D510MO ITX Atom 510 Board
PicoPSU 150 + extra connector
80W 12V AC/DC Adapter
2 X 1TB Hitachi 3.5" 7200 RPM Hard Drive (RAID1)
120GB Western Digital Blue 2.5" Hard Drive (Boot and OS)
2GB DDR2-800 RAM
Scythe S-Flex 80mm Fan SFF80B
Carefully chosen SATA, and custom power cabling
Ubuntu Server x64 9.10
Power Consumption (measured on AC with Kill A Watt):
Idle 2x1TB Heads Unloaded 26W
Idle 2x1TB Low RPM 23W
Idle 2X1TB Spun Down 19W
The RaidMax case appears to only be available at Fry's. It is large for an ITX case, but I chose it because it fits a full size DVD drive and a 3.5 inch hard drive. It came with a 300W Mini ATX power supply, but I never used it.
You can see where I cut some sheet metal from an old CD-ROM drive and riveted it to the hole that the power supply left. That gave me room to use where the power supply used to be. Also, you can see the DC input for the PicoPSU was brought through the ATX back plate.
The D510MO motherboard is nice, it has a dual core Atom that supports Hyperthreading and x64 instructions. It has no fans, just a large passive heatsink. The only drawback is that it has only 2 SATA connectors (and no IDE), so I had to use a PCI sata card to get two more. The two 1TB drives for the RAID 1 array are attached to the motherboard SATA connectors, and the 2.5" laptop drive and the DVD are attached to the add in card.
In order to get three hard drives in the case, I drilled holes in the bottom of the case and mounted one hard drive up from the bottom with some rubber gromits that I had left over from an Antec case. Then, I built a custom second hard drive mount out of some plastic to mount the second hard drive on top of the first. They just barely fit in the case where the power supply used to be, and right behind the 1 and only fan. I bouth some "left angle" 8" SATA cables online to keep cabling tidy, and made my own custom "left angle" SATA Power connectors spaced just right for my 2 drive stack. There is little, but just enough clearance between the S-FLEX 80mm fan and the two drives.
The laptop boot drive sits on top of the case, where the 1 3.5" official mounting position is. Having the system installed on a thrid, laptop drives allows the two 1TB hard drives to spin down where there are not backups running, or no one is using the samba share.
The DVD Drive slids in sideways on top of the whole thing. I write the most important data to a DVD-RW weekly, and rotate them whenever I remember.
Temperatures run 37 for both 1TB drives, and 35 for the laptop drive. The CPU runs around 29, and the VRM about 50. The S-Flex is running at 1300 RPM.