Building a homemade NAS using Alix.1E ITX Mobo and ATX PSU (PSU control without 24 pin connector?)

[CPTLance]

Hi there. I was making a little project and though I would get a most coherent answer here.

Okay so I was thinking of building my own NAS with components I got laying around (the commercially available NAS solutions are ridiculously priced in my area and desired use case). I have mITX PC Engines Alix.1E system board, PCI SATA card and older Corsair CX 430 watt ATX PSU. (basically building from stuff I have around)

The Alix itself is powered by 12V brick that can probably handle the load of the board any prolly a HDD. But I doubt it will run 4x HDD in conjunction to to the board which is what I plant to have. The use case is a data vault so I am not that concerned with speed over capacity (I was thinking at minimum 20TB Raid 6 configuration so some 15 TB of usable storage).

My problem is how do I control the PSU to power on and off with the drives as Alix does not have the ATX 24 pin connector. It would be highly preferable to have a sleep and Wake up on LAN that would incorporate powering the PSU on and off with the system.

Any ideas, similar projects, componets to use?

Thanks for the feedback!

[Windows7ge]

Off the top of my head. Use a relay. Use (or create) a 5V rail (or use a relay that works on 12V) and use it to short pins 3+4 on the 24-pin cable (the green wire). When the board powers up it'll turn the relay on powering the HDDs. When the board turns off it'll turn off the relay. Relays don't require a whole lot of current so you should be able to solder one in anywhere. Maybe use a fan header.

[CPTLance]

Yeah that sounds doable.
Thanks. I'll leave this open for any other suggestions that may come by.

[AbsoluteFool]

Some never PSUS require a load to work fully, when green / black wire are jumped to turn it on. This can be solved by placing a resistor into the mix.