Just saw this thread.
To my experience, one of the biggest issues I have with the tape part of Veeam B&R is that a new run of the source job stops the running tape job.
This is definitely a problem and forces the user to disable all large daily source jobs for most part of the weekend, let alone the jobs that normally run with higher frequency. This means that we have less restore points and higher RPOs on the weekends.
For example, I had to disable the Exchange servers backup source job on Sundays because writing this job to tape takes close to (or more than) 24 hours. Ditto for other jobs that run hourly or every 6 hours.
This is definitely a problem and I'm suprised that the Dev doesn't give fixing this issue a high priority.
Nikita, can you confirm that the next version will have this problem solved?