PSU for my fileserver

[Raduque]

I upgraded my fileserver's CPU the other day and discovered that it was having issues powering up - it would power on and start to boot, then power off and power on and so on in an endless loop. Unplugged an HDD - and it booted into WHS (which then complained about a missing drive, well it's unplugged DUH).

I rigged up a second old PSU that I stuck in the 5.25" drive bays to power two of my HDDs, but this isn't a long-term solution.

So, now I need help on what I should look for to power my fileserver.

It has:
Pentium 4HT 3.2ghz Prescott
Intel DG965WH motherboard
1gb DDR2-533
1x WDC 80gb 7200rpm
2x Seagate 250gb 7200.11
2x Seagate 500gb 7200.11

It runs headless, no GPU, no CD/DVD drive, etc, all drives are SATA.

Currently have it running on an older FSP 450w PSU, similar to this, but it's only 450w max.
Oh, I'm not really looking for specific brands, just what specs I should look for to power a p4 Preshott and 5 SATA HDDs.

Thanks!

 

[HOOfan 1]

450W is more than enough...24+ Amps on 12V rail...be nice to have enough SATA connectors.

I know you aren't looking for specifics, but the Corsair CX400 would be more than enough.

 

[dualsmp]

350w-400w you should be fine. With no overclock, on board graphics and no CD/DVD your file server shouldn't need a very big PSU.

 

[Raduque]

So, I should be looking for a 350-400w with a single massive 12v rail?

Thanks!

 

[HOOfan 1]

Originally posted by: Raduque
So, I should be looking for a 350-400w with a single massive 12v rail?

Thanks!

No single rail isn't necessary. I'd say as long as you have at least 17A dedicated to your ATX and SATA connectors you should be fine.

If your CPU and SATA connectors are on the same rail limited to 17A, you might have a problem.

 

[Raduque]

OK, so then the question becomes "How do I figure out if the SATA and CPU connectors are on different rails?"

 

[jonnyGURU]

Originally posted by: Raduque
OK, so then the question becomes "How do I figure out if the SATA and CPU connectors are on different rails?"

If the PSU has two or more rails, the CPU and SATA connectors ARE going to be on separate rails. That's part of the spec.