I've been using bareos for quite some time, mostly with the standard Full, 
Differential, Incremental backup scheme. The parameters used for this 
scheme seem to be fairly clear. 

Recently I have had a need to use the Always Incremental scheme and Virtual 
Full backups for offsite storage. It seems that the parameters used for 
these are sometimes the same as the standard scheme and sometimes aren't. 
It also appears that new parameters have been added in the past few years 
to help with these new schemes, however it hasn't been very clear to me 
which parameters matter. Is there a good guide somewhere of what parameters 
are used for each scheme?

I found the documentation of the Always Incremental scheme helpful. That 
seems pretty good. I find the most trouble with Virtual Full backups for 
offsites.

My questions are:
- What pool is used for the source of a Virtual Full backup? Or is that a 
pointless question because bareos doesn't source from a pool for such a 
backup, but rather considers all backup jobs for the particular client that 
aren't archive jobs and uses whatever pool those volumes are in.

- What pool is used for the destination of the Virtual Full backup?
  - Pool -> Next Pool?
  - Job -> Next Pool?
  - Job -> Virtual Full Backup Pool? This one appears to have been added 
since I first looked at Virtual Full backups about 5 years ago and is 
perhaps the correct one to use.

I have not used Copy or Migration jobs, although feel like I would have 
similar questions for those jobs as I do for Virtual Full backups.

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