The Deployment Guys : Creating a SID Mapping File with Windows PowerShell

Before I became a “Deployment Guy”, I used to be an “Active Directory Guy” and worked on quite a few Active Directory deployments and migrations.  When users, groups, and computers are migrated to a new domain, the resources (files, shares, user profiles, etc.) need to have the permissions on them changed so that the migrated accounts can access them as before.  If users/groups are migrated before the resources, they can be migrated with SID History (the SID of the old accounts are placed in the sIDHistory attribute of the new account) to allow access to resources before the “security translation” of permissions is completed.

The Deployment Guys : Creating a SID Mapping File with Windows PowerShell