Hello again.

Now I actually had to wonder: Is there no way to have bacula do both 
labeling AND switching Volumes automatically?
Or do I just misunderstand?

Regards,
Florian S.

Am 11.09.2014 um 09:33 schrieb Roberts, Ben:
> Hi Florian,
>
> >> Is using one Device Resource in the Storage daemon enough or is 
> there any
> >> use for an autochanger in this case?
> > We do the same thing as this and have a single device resource with no
> > autochanger.
>
> Both options have their merits and drawbacks, so you should assess 
> which would be more appropriate for the workload you want to use.
>
> Using an autochanger means:
> - you have have multiple storage devices, and therefore run multiple 
> jobs concurrently using different volumes (either in the same, or in 
> different pools)
> - you can start using new pools in future without having to create new 
> storage devices or restart the SD
> - you need to pre-create and pre-label your storage volumes (I would 
> advocate using the scratch pool, and letting Bacula move volumes 
> around as needed)
> - if you have at least 2 storage devices, you can reserve one and 
> always be able to run a restore job at any time, regardless of whether 
> backups are in progress
>
> Using a single storage device:
> - you can only ever read/write to a single volume at a time
> - you will have to add a new storage device and restart the SD if you 
> ever want to add a new pool (which can be tricky to find a time if 
> your schedule gets pretty full)
> - you don't need to pre-create/pre-label volumes and Bacula can do it 
> on demand
> - you will need to set Max Pool Volumes or similar to prevent Bacula 
> from completely filling the disk
> - you might have to interrupt running jobs if you're called upon to do 
> an emergency restore
>
> Hope this helps.
>
> Regards,
> Ben Roberts


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