You may want to consider using a SCSI RAID controller SCSI drives tend to be more reliable than IDE and faster too. You may want to check out
www.mylex.com I use there raid controllers in all of the servers I construct, although the WD2000JB is a very good choice.
Also I noticed many of the prices that were listed above quite inflated- I am a licensed direct reseller for many different companies and I can get parts much cheaper than retail
You may also consider getting a removable backup system such as a tape drive or CDRW though it holds very little, to re-secure passwords, usernames, transactions, ect. But depending on what you may be using the server for, this may not be necessary.
As for a redundant power supply you may want to look into buying an external UPS. It is sometimes cheaper and you can power more than one server on it. I have an APC back-ups Pro 1000 and it provides redundancy to my two Unix servers just fine.
--Zak
If olive oil comes from olives…….
And peanut oil comes from peanuts…….
Where does baby oil come from?