server migration 2003-2008, advice needed
We are looking at migrating to 2008 Server this summer in order to run Windows 7 with full functionality. Its the first time i have personally done something like this and I need some advice please.
I have 2 x 2003 server standard domain controllers, call them DC01 & DC02 It seems that all the FSMO roles are on DC01. DNS is installed on both servers while DHCP is installed on DC01. I want to keep DC01 as the main domain controller as its the higher spec server of the two.
My main questions are..
1. Is Server 2003 upgradeable to 2008 or will it need a re-install.
2. Assuming it is upgradeable it is possible to do it in-situ without having to move roles, demote, remove, upgrade, promote. Are there any pit falls and what is the procedure for a process like this?
3. If it isnt possible to upgrade and a reinstall is in order, whats the procedure for moving roles, demoting and re promoting. Will i still keep policies and all the other settings we currently have.
4. Is it possible to have a back up of the server in case this goes horribly wrong?
Many thanks for any help you can give!