From 11.22.x we allow using same path. For now create subfolders and use them for adding partition.
Thank you. Can I use Move Partition after create this partition? In my labs working and I can use same path during Move Partition.
You should be able to move a DDB partition from one location to another.
https://documentation.commvault.com/commvault/v11/article?p=12582.htm
Note: If you enabled horizontal scaling (Which you are as per the pic shared) of deduplication databases (DDBs), the software suspends the backup operations and the auxiliary copy operations that use the DDB partition that you are moving. The backup operations and the auxiliary copy operations that use other DDBs of the storage policy copy run as usual.
I would plan a down time, suspend all jobs, get the entire activity completed and resume.