Service Pack Levels for Domain Controllers befpre raising Domain/Forest Function Levels frm 2003 to 2008 R2
Posted on 2016-07-25
Looking at finally raising our domain and forest functional level, but wanted to be sure re. domain controllers.
- we have no 2000 or 2003 DC's left
- the two 2008 r2 dc's have been running well with AD Dir Web Serv, DFS replication, Dir ser, File repl, DNS and none are reporting serious issues.
- the two dc's are running w2008 r2 std and 2008 r2 enterprise, BUT
and this is my question... the 2008 r2 std is version 6.1 Build 7601 SERVICE PACK 1 and the 2008 r2 enterprise is version 6.1 Build 7600 but NOT Service Pack 1 (yet).
Will that SP1 matter and break raising the domain and forest functional level to 2008 R2, i.e. do I need to SP1 the one that does not have it and/or be on exactly the same update level before I attempt it?