Aller au contenu principal

Backup Scheme: Custom, Incremental. Create full every 30 days. Keep N last full backups?

Thread needs solution

I like the idea of having two full backups available so that if the machine dies while creating the next full backup I still have a backup to go to.  Is there a way to configure it to keep up to N latest full backups, with the latest having incremental backups applied to it until the next full backup is due?

I.e.

My partitions_full_b1_s1_v1.tib
My partitions_full_b2_s1_v1.tib
My partitions_full_b2_s2_v1.tib
...
My partitions_full_b2_s30_v1.tib

Assuming I want to keep at most 2 full backups, it should remove b1_s1, and b2_s2-s30 and keeps b2_s1 and create b3_s1 and its increments

 

0 Users found this helpful

Austin, the Backup Schemes when used with Automatic Cleanup already protects against problems that might cause a new backup to fail by not deleting any old backup version chain(s) until the next new full backup has been created successfully.

What this means in practical terms is that in order to keep a maximum of 2 full backups, your backup storage drive needs to have sufficient free space to actually hold at least 3 full backups plus any incrementals backups created for the two completed backup version chains.

Automatic cleanup only works on complete version chains, so if your scheme is configured to create a full backup then 5 incremental backups before the next new full backup, a chain = 1 x full plus 5 x incremental files.

Automatic cleanup cannot just remove incremental files from a backup chain, it is the whole chain or nothing.