> My understanding so far is that your configuration (no Autochanger) is
> effectively very similar to mine (with Autochanger). Autochanger resource is
> apparently just a virtual place to keep things like Changer Command and
> Changer Device so that multiple Device resources in SD (describing actual
> drives) do not need them included in each one. Basically, it works the same
> both with and without Autochanger defined, except I guess Bacula can choose
> between the two drives automatically if it knows they are in the same
> autochanger (but I am not sure I want it to).
>

I have the autochanger defined in the bacula-sd otherwise bacula will
not be able to load/ unload tapes. But the changer does not have to be
defined in bacula-dir.conf.

>
> Still, config looks rather cumbersome with these fake duplicate Storage
> devices. Wouldn't it be more clear if we drop mandatory requirement for
> MediaType in DIR/Storage resource altogether and move all MediaType
> specifications to SD only? After all, everything physical media definitely
> belongs to storage device(s).
>
I do not have a problem with this but I am a very easy going person...

>
> Another question is whether to go for separate pools per media type or not.
> Separate pools could server as extra protection to be absolutely sure Bacula
> won't try to load AIT5 tape into AIT3 drive, which may not only destroy the
> tape but damage the drive as well. However, from design point of view, it is
> not a proper solution. Pools should be about function (e.g. Full vs.
> Incremental backups) and not about physical implementation (e.g. tape format
> and capacity).
>
This is a user preference. I have separate pools between my DLT and my
LTO, DVD and disk media. I know this is redundant since the Media Type
handles this. The one benifit I get from this is that when I list
media I only have one type of media per pool so that I can more easily
find what I want. I also name my new pools with the media type so I
have pools named UserBackups-LTO2 and LTO2-Archived-Data.

John

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