Hello, Michael,
> TLDR: I keep running out of space before bacula cycles the volumes and
> re-uses previous ones. How do I properly calculate volumes and how long
> I should keep them?
I wrote a paper about it, including the use of estochastic methods to forecast
storage growing using R language: http://airccj.org/CSCP/vol7/csit76618.pdf
> 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
> }
Regards,
--
===========================================================================
Heitor Medrado de Faria | Bacula do Brasil
• Não seja tarifado pelo tamanho dos seus backups, conheça o Bacula Enterprise:
http://www.bacula.com.br/enterprise/
• Ministro treinamento e implementação in-company do Bacula Community:
http://www.bacula.com.br/in-company/
(61) 98268-4220 | www.bacula.com.br
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