Background:
I have numerous jobs (too many to include here), but let's say I know
that a full backup for a given job, X is 50GB. Incrementals are (on
average) around 500MB / day. Therefore, in my mind, I should alot 57GB
for this backup for every two weeks. I have set the retention period for
the job and the volume for two weeks. I have done this formula all my
jobs, and configured the Maximum volume bytes and Maximum volumes to
house all this (it so happens that 2 weeks of data for all jobs should
be a total of 2.2 TB. I am using an external HD that is 5TB.
Somehow, I am still running out of appendable volumes. To bandaid the
issue, I just raise the Max volumes amount and let backups continue on
because "I'll come back to fix this later." Now, I have raised them to
185 and I am nearly out of space on the 5TB drive - and I am (once
again) out of appendable volumes. So, it's really got to be fixed now.
Is this the correct calculation method for how much space I should be
consuming? What am I missing?
## File Pool definition
Pool {
Name = File
Pool Type = Backup
Recycle = yes # Bacula can automatically recycle
Volumes
AutoPrune = yes # Prune expired volumes
Volume Retention = 2 weeks # same as everything else.
Maximum Volume Bytes = 30G # Limit Volume size to something
reasonable
Maximum Volumes = 185 # Limit number of Volumes in Pool
Label Format = "Vol-" # Auto label
Action On Purge = Truncate
}