I have an opportunity to buy a new Exchange Server for ES2003. We have 70 users. We are currently running an older box with Server 2003, 1 GIG of RAM and 3 Hard Drives totalling 70 GIG. It's been working fine for us. What should I buyfor the next few years. I'm thinking:
2 GIG RAM (maybe 3 or 4?)
5 Hard Drives in RAID with about 120 GIG?
2 Processors and Redundant Power Supply?
At the same time we migrate, we will rebuild ES and become a child domain under our National office. Should I buy Dell or HP (or something different)? Since we are small and basic needs, should I stick with ES 2003 and not worry about 2007?