It won't interfere if the primary backup job is not doing any transform operations (i.e. merge). Otherwise the backup to tape job will be interrupted.For instance, I run the active full, it creates a vbk file. This then kicks off a tape backup that starts writing the vbk to tape. Whilst this is happening an incremental disk backup happens and creates a vib based on the vbk. Will this affect the tape job that is running? I can't find any evidence to suggest that it would interfere but I thought I’d ask the question.
Only when old full backup is merged with the following increment at the end of source job.if a forever incremental backup runs it will cause the virtual full tape backup to error and stop running
Yes, that will work but you cannot increase it infinitely though. Some customers used in the tape job a pre-job script which increased retention and a post-job script which decreased retention back to achieve this. But since 'Prevent from being interrupted...' checkbox is available it's recommended to use it instead of such tricks.can I increase the retention points for the forever incremental so that it does not merge anything back into the full backup and therefore doesn't stop the job from running?
<...>there is not enough time for backup tape job to finish.
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