Hi I have EMC Celera NS700 NAS Filler running Linux 7.2 version. I use the windows domain administrator account to backup the data from the NAS Filler and the backup goes fine using Computer Associates Brighstore arcserve backup software. When I try to do the restore I get the following error E3452 Unable to write stream name. (FILE=\\NAS1CRASGE\data\UserDocs\Vkaduwe\VKADUWE\RateHist19990131\RATE_H 04.SD2, ID=3, EC=No mapping between account names and security IDs was done Any suggestion Regards John (Krishnamurthy V) Computer Associates Technical Support Specialist - Storage ': 1-866-422-2774 * : veekr01@ca.com <BLOCKED::mailto:veekr01@ca.com> visit : http://supportconnectw.ca.com <http://supportconnectw.ca.com> (for latest patches and Update)