On 2016-10-01 15:37, Timo Neuvonen wrote:

> Will there be any problem in this case, if I try to simplify the conf files
> and drop away the "autochanger" and one of the two "storage devices" it
> refers to, and just had a single "storage device" per each media type?

Bacula's calim to support backup to disk is, let's say "optimistic", 
without vchanger: https://sourceforge.net/projects/vchanger/

Either that or you have to define each filesystem as holding its own 
"media type" and all that.

Note that you can still run concurrent backups and only serialize 
writes: use a fast disk (SSD) for a spool device. And that if you back 
up to commodity HDDs, you'll need to deal with disk failures: something 
neither bacula nor vchanger will help you with.

Or you can rethink your requirements and back up to a single zfs. Then 
bacula will work without any of those hoops and you can raidz your disks 
against failures.

Dima


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