Hello, I do not find the settings page where to setup the system to keep 3 backups in the storage location.
I am managing a version of Webex 220.127.116.1139.B-AE on premise.
This is not configurable. The system will keep just the latest successful copy of the backup and remove the previous copy.
Some improvements to backup capabilities are coming in CWMS 3.0 version planned for mid next year.