Hello Radoslaw, 

> You cannot run two always on replicated directors. Why? Every single Bacula
> Director requires a separate copy of the catalog database. So, two always on
> directors require two separate databases, so you cannot setup online
> replication in this setup. It just won't work.

This is not very accurate. 
I was able to run several concurrent jobs using to Directors with the same 
name, same Catalog and same clients: [ https://pasteboard.co/IbHjY0J.png | 
https://pasteboard.co/IbHjY0J.png ] 
I just used different Pools and Storage. The plugin jobs failed for obvious 
reason. 
The failed plugin Jobs and Load Balancing might be solved using the Maximum 
Director Concurrent Jobs and not allowing duplicated jobs. 
The Storage and Pools SPOF can be resolved using Bacula Enterprise Shared SAN 
plugin or a NFS share for both SDs (disk only). 
The Catalog SPOF Pgsql might be solved with Master - Master replication. 
Configuration replication with rsync or any trivial mechanism, that is very 
easy to manage. 
For bconsole and Web GUI, you can even use a DNS failover as the cherry on the 
top. 
I will keep testing. 

Regards, 
-- 

MSc Heitor Faria 
CEO Bacula LATAM 
mobile1: + 1 909 655-8971 
mobile2: + 55 61 98268-4220 
[ https://www.linkedin.com/in/msc-heitor-faria-5ba51b3 ] 
        [ http://www.bacula.com.br/ ] 

América Latina 
[ http://bacula.lat/ | bacula.lat ] | [ http://www.bacula.com.br/ | 
bacula.com.br ] 
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