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Symantec Backup Exec 12.5 not automatically writing to available second tape

Posted on 2011-02-24
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Last Modified: 2012-06-21
We have a tape library and we insert 2 tapes for during the week and 2 for the weekend. I have configured Symantec with Media sets of Daily, Weekly and Monthly

The backup is running daily flawlessly until Thursday when one of the tapes becomes full in the middle of the backup process. At this stage Symantec throws up an alert to "Please insert overwritable media into the robotic library using the import command."

WELL, since there IS a blank tape available within media set "Daily" I don't understand why it doesn't automatically move on to the next tape when the media becomes full in the middle of the backup process.

HOWEVER if I cancel the job and start it again immediately it continues to use the other bank media which it failed to write to when the original media became full.

Any ideas?
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Question by:the_omnific
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12 Comments
 
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Expert Comment

by:paulsolov
ID: 34979470
put the blank tape in scratch media and see what happens
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Expert Comment

by:btassure
ID: 34980539
What device pool are you using and how is it configured?

It sounds like either the pool is incorrectly set up or it is not targetting the right one.
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Author Comment

by:the_omnific
ID: 34986322
Ok, I have 4 sets of backup tapes.

Each set consists of:

Two tapes for daily
Two tapes for weekly
One tape for monthly (which is archived permanently)

The media sets I've configured:

Daily
Weekly
Monthly

What is the recommended overwrite protection and append period?
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LVL 56

Expert Comment

by:andyalder
ID: 35004528
I would suspect the overwrite protection period is set wrong, for a weekly tape you have to set it to 6 days, not 7. The timer starts when it finishes writing to the tape so 7 day protection is something like 7 days and 8 hours from start of backup depending on how long your backup takes. If it's a normal overnight job then by the time you cancel in the morning the 7 days are up buy they aren't up at 2AM.
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Author Comment

by:the_omnific
ID: 35004695
How did you come to that conclusion?

As I said initially, if I cancel the job (whilst it displays the notification: "Please insert overwritable media into the robotic library using the import command.") And then start it again immediately, it continues to use the other bank media which it failed to write to when the original media became full.
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Expert Comment

by:andyalder
ID: 35006383
I was assuming that "insert overwritable media..." was appearing at something like 2AM and you didn't see it until you got to work.
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Author Comment

by:the_omnific
ID: 35013589
Oh! Lets see this week

Thank you :)
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Author Comment

by:the_omnific
ID: 35032745
No, I can confirm that even though I have available Overwritable and Appendable media in the media sets the backup job does not move on to the next tape when the previous tape is full.

Please insert overwritable media into the robotic library using the import command.

Overwritable media includes scratch, blank, and recyclable media. Please note that depending on the current Media Overwrite Protection setting, imported and allocated media may be overwritable as well. Consult the online help for more information on overwritable media.


Any ideas?
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Author Comment

by:the_omnific
ID: 35032750
It will however use the available tape if I cancel the job and start it again.
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Accepted Solution

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the_omnific earned 0 total points
ID: 35211507
OK, once tapes are manually formatted you are only able to assign a single tape to the Media Set. The second tape MUST be in the Scratch Media Set. In doing so, when the backup is performed and the first tape is becomes full (in the middle of a job), it will automatically look into the Scratch Media Pool.

Another way around this is to create "Library Partitions" and assign specific jobs to a range of Slot Numbers in the library. Specifying a range of Slot Numbers for "Daily", "Weekly" and "Monthly" tapes.
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Expert Comment

by:andyalder
ID: 35213493
>once tapes are manually formatted

Why the heck are you manually formatting them? You need to read through http://www.symantec.com/business/support/index?page=content&id=TECH5459, it has no reference to formatting because formatting is not something you should ever need to do.
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Author Closing Comment

by:the_omnific
ID: 35239154
I found the solution to my own question
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