>Hi, I have been having problems with Windows Server 2003's ntbackup
>program. I have tried every group and microsoft site I can find to
>solve the problem but to no avail.
>
>I am basically trying to do a daily backup to a set of 4mm DDS4 tapes.
>I don't want it to care what is ont he tapes already, but write over
>them nightly.
>
>My server is a Dell Poweredge 2600 with 512MB Ram, 36GB HD (Raid5) with
>a PVT100 DDS4 Tape drive running Windows 2003. It is up to date with
>all the Windows Updates (as of 22/3/5). I also intalled Microsoft's
>828402 hotfix, which made no difference.
>
>The tapes are less than 6 months old, the tape drive has been cleaned
>using the provided head cleaner :-
>
>
>My backup script is as follows:-
>
>start /wait rsm.exe refresh /lf"4mm dds"
>C:\WINDOWS\system32\ntbackup.exe backup "@C:\Documents and
>Settings\Administrator\Local Settings\Application
>Data\Microsoft\Windows NT\NTBackup\data\bccnbackup.bks" /d "Set created
>10/03/2005 at 15:43" /v:yes /r:no /rs:no /hc:on /m normal /j
>"bccnbackup" /l:f /p "4mm DDS" /um
>
>This works usually when the tape is free, but produces this log when it
>has already been used and is in the 4mm DDS pool:-
>
>Backup log:-
>==================================================
>Backup Status
>Operation: Backup
>Active backup destination: 4mm DDS
>Media name: "Media created 22/03/2005 at 11:52"
>
>
>Error: Insufficient memory available.
>The operation was ended.
>Backup completed on 22/03/2005 at 11:53.
>Directories: 0
>Files: 0
>Bytes: 0
>Time:  1 second
>
>Error: C: is not a valid drive, or you do not have access.
>
>
>----------------------
>
>The operation did not successfully complete.
>
>----------------------
>
>==========================================================
>
>In Event viewer I have error 8017, 8001, 8019. As I mentioned earlier,
>I installed the recommended hotfix 828402, but this did nothing. I also
>upgraded my tape drive's driver and firmware.
>
>The strange thing is, the backup seems to work when the media is
>allocated as 'free'. Now my understanding is that the /um switch is
>supposed to tell the program to use any media in the drive.
>
>I've seen many posts with these errors, but no real solutions, please
>help!!!!