Do the TCS and Network Attached Storage need to be on the same domain?
Yes. When the TANDBERG Content Server is configured to work with a NAS, services running on the Content Server need to have access to the NAS share. This is done by adding the Content Server machine credentials to the access list for the NAS share. This can only be accomplished if the Content Server and the machine hosting the NAS are on the same domain. See the TCS Administrator Guide.