How to set the retention value to media pool for tape backup in Veeam?

This is using Veeam backup and replication 9.5. We are using a standalone lto6 single tape drive. There are altogether 10 tapes for 2 rounds of full backups from Monday to Friday. Since the contents for each day backup is quite small (around 100 GB), I am thinking of keeping 10 weeks' worth of backups for each tape, so, I set the retention to 10 weeks for this media pool. However, no matter how I twist and turn the settings on both media pool (borneo) and backup to tape job 2, I still can't get the subsequent backup contents append. Please see the attached document for the settings of media pool and backup to tape job.

Please enlighten so as I can store 10 weeks' of backup contents per tape or so. Thanks in advance.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

David Johnson, CD, MVPOwnerCommented:
I'm thinking it is because of the create new media set for each backup session

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
MichaelBalackAuthor Commented:
Hi David,

At the end, I still kept "create new media set for every backup session", but, change to use "do not protect data (cyclically overwrite tapes as required).

I have 2 sets of tapes for Mon - Fri backup. That means I can have a backup data of up to 2 weeks.
MichaelBalackAuthor Commented:
Thanks for Expert David in pointing to the retention-related setting. By doing so, tape backup is working
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Storage Software

From novice to tech pro — start learning today.