>> My company has 2 LTO4 autochanger tape libraries (1 drive per
>> library, 20TB max per library).
>> Size to backup is about 30TB.
>>

I would divide this job down into much smaller chunks if possible.

>> As backup size does not fit a single library, I simply would like to
>> span my storage using the 2 libraries.
>> Is it possible ?
>
>  From my understanding you only need to list both in the bacula-sd
> config and let them be in the same Pool. This should be enough for
> Bacula to use all the tapes.
>
The big problem is bacula will not switch drives during a job.

John

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