delta backup: two full backups all the time - we don't know why :(

[vmpr]

Hi everyone

we have a strange behaviour at the moment, we have a delta backup job configured like that:

• Full backup interval is 0 as we want full backups only on Saturday night
• We have one schedule for Sunday to Friday night with no forced full backup for incremental backups
• We have one schedule for Saturday with Force Fullbackup enabled to make sure only Saturday is the full backup

Screenshot 2025-04-15 at 21.29.47.png

So, now problem is we have two full backups on our remote, and we are getting into storage space trouble

Screenshot 2025-04-15 at 15.11.58.png

Has anybody an idea why this is happening? What do I miss?

cheers and have a great day!
Ringo

[Danp]

Hi,

This is the expected behavior. The oldest backup will always be a full (key) backup, and newer incremental backups will be merged into this backup as you exceed the retention schedule. When you take the full backup on Saturdays, that doesn't eliminate the need for this prior full backup. Thus you end up with two full backups for a period of time.