New NAS

I've put hand on a SAS/SATA Backplane from HP, since i already have a Smart Array P400, i will make a try working on a new NAS.

Now : The NAS is an ATX Tower, pretty big, with 6 to 8 hard drives, 3“1/2 and one 2”1/2. it makes noise and vibrations.
Wanted : A compact NAS, with two PSU, 8 2“1/2 hard drives, and noise-less.

• PSU : Compaq PS-5141-4C - 145W
  • Will be used only for motherboard. One of the 12V line will activate the relay for the second PSU.
• PSU : EMACS P1A-6300P - 300W
  • Will be used only for HDDs backplane and fans, the shunt beetween green/black will be done by the first PSU.
• Backplane SAS/SATA HP : 8 HDDs 2”1/2, i have two of them, one will be sacrified for pinout reversing

8 disks in 2“1/2 size, i think i already have one 500Gb somewhere.
I plan to use only 500Gb drives, as they are cheaper and easyier to find in scrap.
Maybe if someone have eight 1Tb 2”1/2 hard drives to throw, i wont say no… ;)

• http://forums.overclockers.com.au/showthread.php?t=1094947
• And according to another source i dont remember, the following match the link.

_______clip________
5v_|   |GND|   |5v_
12v|GND|GND|GND|12v

• The first will power a relay using 12V line to power-up the second
• Power connectors will be moved
• The motherboard PSU doesnt have a “P4” connector, i will sacrifice the two molex 12V lines to create it.

• CPU Fan will be changed, need a low profile and noise-less
• Two big fan, with speed regulation by hand, mainly for HDDs
• Fans of PSU will be probably changed, biggers, less noise

• Two USB sockets will be fixed inside, one for the FreeNAS USB Key, other for… i dont know

I dont have actually any ideas in what to put it. I will look in military surplus or old RF/Measurement equipment to find something at least 20% cooler to use.