Hello Evert,

Am 16.06.23 um 08:08 schrieb Evert Meulie:
Hi everyone,

I'm trying to inform bareos of the capacity of the tapes in my drive, which is 
(at least) 18TB.

I've tried adding 'MaxVolumeBytes = 18 TB' to /etc/bareos/bareos-sd.d/device/tapedrive-0.conf , but that gives a 'Config error: Keyword "MaximumVolumeBytes" not permitted in this resource.'

This is true, please check the documentation:
https://docs.bareos.org/Configuration/Director.html#config-Dir_Pool_MaximumVolumeBytes

This is a directive that can be set in the pool resource in the director 
configuration.

An AI which shall remain nameless then pointed me to 'Volume Capacity'. This configuration directive isn't documented that well <https://docs.bareos.org/Configuration/StorageDaemon.html>, but I tried it anyway. Lo and behold, my error went away! 🤓

My question: Is Volume Capacity indeed the directive I should use to indicate the capacity of my tape drive?

You should not set this directive at all when using tape drives. Bareos will always fill the tape with as many data as possible. As the tape drives have hardware compression, it depends on the data being written to the tape how much will really fit on the tape.

The directive is useful if you are using disk volumes and want to limit the size of the volume files being created in the filesystem.

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