Hi Pros, I have a problem with my NT Backup scheduled only Friday having this issue but there are no problem with Monday to Thursday backup.The backup fails even i manually run the task for friday tape media. I also tried another tape media still having the same error.Please refer to the log file ============================================================================== Backup StatusOperation: BackupActive backup destination: LTO UltriumMedia name: "Friday 4"Volume shadow copy creation: Attempt 1.Backup (via shadow copy) of "C: WINDOWS"Backup set #1 on media #1Backup description: "Set created 21/11/2008 at 3:31 PM"Media name: "Friday 4"Backup Type: NormalBackup started on 22/11/2008 at 12:09 AM.Backup completed on 22/11/2008 at 12:14 AM.Directories: 1659Files: 22006Bytes: 3,431,636,964Time: 4 minutes and 35 secondsBackup (via shadow copy) of "D: Data"Backup set #2 on media #1Backup description: "Set created 21/11/2008 at 3:31 PM"Media name: "Friday 4"Backup Type: NormalBackup started on 22/11/2008 at 12:14 AM.Error: The device reported an error on a request to write data to media.Error reported: Bad data.There may be a hardware or media problem.Please check the system event log for relevant failures.The operation was ended.Backup completed on 22/11/2008 at 3:46 AM.Directories: 16868Files: 123589Bytes: 200,236,052,302Time: 3 hours, 32 minutes, and 19 secondsError: D: is not a valid drive, or you do not have access.----------------------The operation did not successfully complete.----------------------===========================================================================I have follow microsoft knowledge base below but problem still persisthttp://support.microsoft.com/kb/817688anyone can help? this is fresh installed Windows Server 2003 Standard Edition 32-bit with SP2.

Please try to use Newsgroup for Windows Server to get relevant help. Discussions in Windows Server http://www.microsoft.com/communities/newsgroups/en-us/default.aspx?dg=microsoft.public.br.windows.server Regards, Xiu