Tape usage in BE 9.1

[tomc6]

I'm using BE9.1 and running anywhere between 60-100 individual backup jobs a night.

An issue I've come across is that when I check on the status in a morning I sometimes have jobs that are q'd having backed up an amount of data. The machine will be requesting more overwriteable media, even though at least one of the tapes will only be partially used (LTO 100/200gb tapes).

I've currently got the media management set to Partial - protect & Overwrite recyclable media before scratch.

Any jobs being started will run on the space on these tapes, just not jobs that have already started. These partially completed jobs will however run if a fully overwriteable tape is inserted.

Is this the normal operation of Be 9.1? Or can I rectifiy this issue?

As you can imagine its causing some issues with my scheduling and tape management as I'm left with some tapes only having a few gb of data on them.

 

[justin2000]

The second tape used in a backup job can only be overwritten - it cannot be appended to.

 

[tomc6]

Ok thanks.

This leads me on to a follow up question then.

With the number of jobs that I run it can be difficult to accuratley estimate what tape a job will be on. So is there something I can do to help reduce the amount that my problem above happens? As I'm finding that some mornings I can have the backup requesting more tapes whilst some that have been used have only got 1-2gb of data on them.