I am close to completion of my NAS case. The goal was to make it as power efficient as possible and as quite as possible with-in limited budget. I will add description as and when I get some time, but I want to start of with some pictures.
I am still waiting some parts( illuminated power button, Few SATA Power combo cables).Here is the configuration:
Asrock G43FullHD Motherboard
Celeron E3400 @ 1.056v Dual Core
2GB Kingston HyperX DDR3
5 x 2TB Samsung H204UI HDDs
1 x 32GB Zalman SATA SSD
Dell RM 112 Power Supply (Fan Removed).
Single Antec 120mm Tri-cool at lowest speed pulling air from bottom, sending some air thru Power supply- Suspended Note:
Planning to replace 120mm fan with 140mm along with tower heatsink to make it complete single Fan system ( 140mm would be CPU Fan, and cools complete system)
Current Power consumption:
Idle with only OS disk: 24 Watt AC
2 x Prime 95 thread running maximum power mode: 43 Watts.
Idle with Storage Drives spin-down: 28 Watts AC
Idle with Storage Drives spinning: 44 Watts AC
Actively writing content( with Dedup & compression): 47 - 49W
CPU reaches Max 42 C with after several hours of Prime 95 with CPU Fan running at lowest speed allowed by MB ( ~ 1000 RPM) with OEM heatsink.
HDDs normally running around ~26-28 Deg C, on stress test with several GB of transfers, surface scans etc to ~28-29 C. I am little concerned, they are running too cool. (Based on Google HDD doc, it seems 35 C is sweet spot for HDDs)The design:
Fairly compact Size: 9 3/4" Width, 11 3/4 depth. 14 3/4 inch height including legs, built with 3/4" Hardwood (Red Oak).
Case inside is lined with Aluminum sheet for EMI protection
All vents are covered with Steel Mesh.
Air enters from completely open bottom covered with Steel Mesh, and exit to sides (Tapered side openings).
There is air guide on the top to split the air-flow to left and right
Power Supply is mounted on front top, perpendicular to Motherboard, fan opening facing down, air exit to right.
HDDs are mounted in custom made cage, suspended on elastic strings vertically ( Connection in the bottom) so both sides of HDD get plenty of Air. HDDs have bottom aluminum plate which is folded to hang on to elastic on both ends( so it would not fall down, even if rotate rack in air direction.
The HDD cage is mounted to left side door.
coming up with internals photos soon...
Inside photo, on top it is air guide to send air to sides smoothly(like a vane). See Power supply mounted in the front, had to customize power cable with crimp on connectors to fit tight space.