Low Power Server, help?

[budec]

I've been thinking about building a low or at least "lower" power computer for my home.

It is used for:
-Unix stuff (web server, sftp, scripts, chat server, etc).
-Firewall/Router.
-Network Media Server.
-needs to be up 24x7

Right now it's Dual AMD MPs 2200+ with 7200 drives.

I'm using 2x80 gigs and 2x360 Gig drives and don't need much space (both RAID-1)

Throwing Dual RAID mirrored 2 Terabyte "Green" drives plus SSD (for root and user disk) should be plenty and should save on power.

I think the Via C7s won't be powerful enough.

The Intel Atoms look perfect [?]; but don't know if I can build one with "off the shelf" parts?
Any other options? Maybe a Pent III (dual?). They might be on the slow side though.

How about Power Supply, how do I determine what I need?

It's just going to be those 2 drives, SSD, 2 nics (hopefully both will be on board), cd-rom drive, rans and cpu.

 

[lilfiend]

what you could do is get a mini itx motherboard with the atom 330 and 1 pci socket on it then get one of those pci riser cards that make it into 2 so you can put a second nic card in there and a sata card to support all of your drives (if there isnt enough sata ports on the motherboard)

edit: just get a smaller 200w psu or something for micro atx motherboards.