Unique SID on Domain

[kend]

I used XP Backup to backup a new pc set up the way I want
it when used attached to my domain. Then I restored the
backup to another new pc with the same exact hardware.
Both the backup and restore pc's were not attached to my
domain at the time of the backup and restore. After the
restore I booted the restore pc with the network cabled
disconnected and ran sysprep on it with -nosidgen.
Will I have any problems with the backup and restore pc's
on the same domain?

Thanks, Ken

 

[Torgeir Bakken (MVP)]

I used XP Backup to backup a new pc set up the way I want
it when used attached to my domain. Then I restored the
backup to another new pc with the same exact hardware.
Both the backup and restore pc's were not attached to my
domain at the time of the backup and restore. After the
restore I booted the restore pc with the network cabled
disconnected and ran sysprep on it with -nosidgen.
Will I have any problems with the backup and restore pc's
on the same domain?

Hi

No, the restore computer will have it's own Domain SID (created when you join
it to the domain), and that is what is important. In a domain environment, you
haven't got a conflict/problem really even if the computer SID is common
between several computers.

From http://www.sysinternals.com/ntw2k/source/newsid.shtml

<quote>
"Duplicate SIDs aren't an issue in a Domain-based environment since domain
accounts have SID's based on the Domain SID"
</quote>

The only situations where identical computer SID can be a "problem"
(securitywise), is in a workgroup setting as well for removable media formated
with NTFS (where local account security attributes are applied to files and
directories).

More about this here
http://www.sysinternals.com/ntw2k/source/newsid.shtml

and here (page 2):
http://www.winntmag.com/Articles/Index.cfm?IssueID=53&ArticleID=3469