Overwriting media in Win2000 backup


I have a Win2000 server that I use Win2000 Backup to schedule daily full backups to my internal 4mm DAT drive. I have the following batch file set to run each night using Task Scheduler:

ntbackup backup "@C:\Program Files\Windows NT\NTBackup\DailyBackups_20jun02.bks" /j "Daily Backups"/p "4mm DDS" /d "Data, System" /v:no /r:no /l:s /m normal /rs:no /hc:on /um

My problem is, unless the media is blank, I get an error in the log stating that there is "no unused media available". Is there an easy way to get this to overwrite whatever media is in the drive? I want to be able to use a two week supply of tapes and overwrite them on the third week. For example I have Monday1, Monday2... on week three I want to overwrite Monday1 with that day's backup.

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OK, I'm commiting this from memory. When you start the wizard I am almost sure that when creating the job, you can specify whether to overwrite existing media. It looks like you have selected the option to use "unused media" that is why it will not backup over used media. I would try the properties of the backup job to see if there is an option there to overwrite existing media. I'm almost certain there is.
Dawn_BlAuthor Commented:

I think I need to try both suggestions. jassav... I couldn't get the backups to run at all without specifying a media name until I added the /um switch. mikecr I have been putting off installing SP2 on this machine which that support article eludes it contians an update to the RSM. I will try tonight and let you both know what happens.

Thanks for the suggestions and I'll post again tomorrow with the results.

Dawn_BlAuthor Commented:

Okay I installed SP 2 for my Win2000 Server and all seems to be okay. I didn't make any changes to my backup script but now RSM is recognizing tapes that already have data on them.

Thanks also jassav for the suggestion. I think the /um media doesn't necessarily mean blank. You'd think they could make all those backup switches a little more user friendly :)

Good deal! I'm glad I could help. If you need anything else, please stop back.

Good Luck!
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