Currently i have a mix of DC's, a Win2008r2 domain at Head Office and some Win2000 and Win2003 DC's across another 4 offices. All offices are in different capital cities and these sites are connected back to Head Office with high speed VPN.
Each site has networked printers and local file storage of up to 500GB each. Each workstation authenticates onto it's local DC and each DC has a different name.
Now it's obvious that the brach DC's need to be upgraded, preferably to 2008r2 however in what way does one think would be the best way to handle this?
Option 1 - Prepare new servers and keep them seperate as per current?
Option 2 - Prepare new servers and setup DC's as Read Only DC's?
Option 3 - Setup NAS storage in each remote branch and users authenticate against Head Office DC?
Your opinions and ideas most welcome.