In the following link you can read improvements in vSphere 7.0 U1 for data protection. Areas of improvements are:
- Network QoS for Backup Traffic
- Improved backup job resilience
- Improvements in scalability for concurrent backup jobs
- vSphere APIs for I/O Filtering (VAIO) improvements
https://blogs.vmware.com/virtualblocks/2020/11/18/whats-new-in-vsphere-7-u1-for-data-protection