We would like to upgrade to Windows Server 2003 R2 to take advantage of the DFS replication features.
Our current Primary Domain Controller, which is also our File Server, Print, DHCP, DNS is running Server 2003 Standard, w/ Service Pack 2.
Our other 9 AD domain controllers/file&print servers, located at various remote locations also have Windows Server 2003 SP2, and are all using DFS links back to our main server.
All the reseach I've done explains that an upgrade is possible from Server 2003 SP1, but is it still possible to upgrade from SP2 to R2? If so, how?
We are also in an Exchange 2003 environment, it is not using DFS, but will it be necessary to upgrade it to R2 as well?
Will it be necesssary to upgrade all the servers at one time in order to resume file replication, or will file replication still work between R2 and SP2 servers?
Will the R2 improved/upgraded DFS components work with the R2 servers that are installed, or will all of them have to have R2 before this feature is available?
Will the DFS links need to be re-created on all the servers, or will they remain in-tact after the upgrade?
Finally, since this upgrade is being done as a result of DFS replication improvements, would it make more sense just to upgrade to Server 2008, as there are even further improvements? If not immeditely, would upgrading from R2 to Server 2008 be possible without problems?
Thank you in advance.