Advice on Setting up my own servers...

We currently have about 20 servers we have aquired. We were thinking about setting these servers up using RH 8.0 running the cPanel/WHM 5. I had a few questions since we were thinking about leasing out a building and running T1 lines to the building.
At the moment only 2 - 5 servers will be used for for Web hosting.

1) How many sites max should be on each server? Server is Raid 5/0. Alloted space on server for web hosting would be about 10GB.

2) Should each server have its own firewall? Or can the servers be NAT with private IPs behind a firewall server with a public IP? What has been the most reliable Firewall product for RH Linux?

3) How many IP addresses max should be given to each server? Each server has multiple NICs. How many max to a NIC?

4) What has been the most reliable Anti-virus Software for RH Linux?

5) What backup methoods are used the most? We are using RAID 5/0 with hot swap drives, UPS, nightly backups. Are there otherways to secure uptime should all 3 of these fail?

6) Do most people have some sort of disclaimer to protect them should the power be out for extended periods of time, beyond the extent of their UPS?

7) What kind of line would give me enough bandwidth for 2-5 servers and yet not drown me in high price? Is having 2 T1s enough?

I am sure more questions will come up. Your advise and expertise is greatly appreciated.

 

 

 

 

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