W2K3 Server Spesification

[Richard Slater]

Okay,

My boss has bought 5 servers with the following specs:

CPU: Dual Xeon 2.4 HT

RAM: 1GB CAS 2.5 Non-ECC

HDD: 1xWestern Digital 40GB, 1x Western Digital 200GB

NIC: Intel Pro1000

From these five servers, he would like the following:

1 x Exchange Server

1 x IIS Server

3 x File Servers

There is currently not that much data in home areas to go on the File Servers, only about 72GB in user data and another 20 GB in general shares, the main problem is at any one time there may be 100 people accessing it at the same time.

Here are my questions:

1) Would three servers running Windows 2003 and DFS be a good idea, i am personaly of the "all servers must have a RAID 1 array minimum" camp, however if the three servers were running as File Servers using DFS to share the home drives (they would most likely be Domain Controlers too) then we would have redundancy as if one server was down DFS would automaticly use another server, am I correct in this thought?

2) The Exchange and ISS servers are currently not RAIDed, they do however have SATA RAID controllers, I was thinking it might be better to have two SATA drives in RAID 1.

As for the Exchange server I am very tempted to say that we really can't be doing with SATA RAID, we really need a SCSI RAID 5 array.

Anyway... what do ya think