Hello,
There are only defect fixes and additional features for administrator . There isn't any major change with end-user experience.
For detailed changes , for your reference Release notes - https://www.cisco.com/c/en/us/td/docs/collaboration/CW...
Hello,
What is the exact version?
Couple of documents to get you started.
Disaster Recovery by Using the Storage Server
https://www.cisco.com/c/en/us/td/docs/collaboration/CWMS/2_7/Administration_Guide/cwms_b_cwms-administration-2-7/cwms_b_cw...