Sorry, I am off on vacation now for several weeks.
I am sure the list can help you.

A Bacula device does not hold Volumes rather it
can "mount" (use) every Volume one at a time in the Archive Device
directory you specify.  The number is limited only by
the  number of files the filesystem permits a directory
to hold.  You can limit a device to a specific
number of Jobs and to a specific MediaType.

Best regards,
Kern

On 05/28/2013 09:09 PM, Dimitri Maziuk wrote:
> On 05/28/2013 01:41 PM, Kern Sibbald wrote:
>> I am wondering why and how you come up with ideas
>> that don't correspond to what Bacula actually does.
> Perhaps because all I know about what Bacula actually does is what I
> read in the manual. (Don't get me wrong, it's no worse than the manuals
> I write for my code -- that's why I'm on this ML & keep asking you.)
>
>> Every Device resource that is referenced by a virtual Autochanger
>> resource in bacula-sd.conf is equivalent to a tape drive. The
>> Volumes that have been created are equivalent to the slots,
>> you get one slot per Volume -- as many as you want.
> Please spell this out in simple words: I have 2 Devices in the
> Autochanger, each Device can hold 5 Volume files. Bacula writes 5
> Volumes on Device-1, Device 1 is now full. What you're saying is bacula
> will *not* write Volume-6 to Device-2, is that correct? (That's
> certainly what's happening here.)
>
> What is the point of the virtual autochanger then? What is the intended
> usage scenario?
>


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