Hi,Can any body tell me that what is the exact difference between SID and RID in Window Server 2003 Active directory.Please help me.

Hello,for domain accounts, the SID of a security principal is created by concatenating the SID of the domain with a relative identifier (RID) for the account. SIDs are unique within their scope (domain or local) and are never reused.So the RID is part of the complete SID and will be issued from a DCs RID pool. One DC in the domain is the RID master, controlling all RIDs from the domain and 'handing out' RIDs to the DCs of the domain if their pool is running out.Also see:http://technet.microsoft.com/en-us/library/cc778824(WS.10).aspxBest regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties, and confers no rights.