Kevin:
Can't find the documentation I based this on (probably vanished several years ago), but here's what I've excluded, based on Microsoft recommendations:
D:\NTDS\DB Logs\EDB*.log
D:\NTDS\DB Logs\Res1.log
D:\NTDS\DB Logs\Res2.log
D:\NTDS\DB Logs\NTDS.pat
D:\NTDS\Database\*.*
D:\NTDS\Ntds.dit
D:\NTDS\Ntds.pat
D:\NTDS\EDB*.log
D:\NTDS\Res1.log
D:\NTDS\Res2.log
D:\NTDS\ntfrs\jet\sys\edb.chk
D:\NTDS\ntfrs\jet\ntfrs.jdb
D:\NTDS\ntfrs\jet\log\*.log
Probably 'way more than needed, but you don't want to kill a DC....--The Bug Guy