storage server power requirements

[Spikesoldier]

i am about to make a new build for a storage server at the house.

i plan to run:

athlon ii based amd sempron (will unlock to dual core if it can, and/or underclock and undervolt)
785g mainboard/radeon hd4200 igp
2gb ddr2
30/32gb ssd for WHS
four 7200rpm hdd's
onboard gigabit lan
optical drive

think i can get away with a 350W 80plus?

http://www.newegg.com/Product/Produc...82E16817151077

what about if i plan to expand to eight 7200rpm hard disks?

 

[DisgruntledVirus]

As a side note, I thought WHS required 60 gb min for boot drive? I could be mistaken though.

 

[Spikesoldier]

If that's how it is then looks like I might just run Win7 or a flavor of linux.

My main goal is to expand and improve throughput from my current NAS, D-link DNS-321.

 

[Concillian]

Just for reference, my file server with 4 HDs and an old athlon64 1.8GHz is using 50W idle according to my kill-a-watt. Sometimes it probably seeks and uses some CPU, but CPU usage is low. A machine like that can get by with a very small PSU.

Look at a spec sheet for the drives you're interested in, most likely they're about 6W nominal and 12W max, 8 drives is like 100W max. Using on-board video and a single core processor, I'd be suprprised if your total CPU + mobo + memory is over 100W. There's plenty to spare with a 350W supply.