We are planning an upgrade from Zerto 6.5U4P1 to 7.5. In planning this, I have several questions noted below:
This is Kalsang from Zerto. You can’t upgrade from 6.5 to 7.5 directly. You need to do in-place upgrade which means 6.5 to 7.0 and then 7.0 to 7.5 etc
There are no additional costs from a Zerto licensing for an upgrade.
Interoperability Matrix for Zerto Environments: This is for checking the Zerto version compatible with other platforms.
Upgrade doesn’t take much time and I would recommend not to select (Auto VRA Upgrade) while upgrading.
To rollback, If something doesn’t work is we suggest keeping a snapshot of the ZVM first.
In the future please refer to the same Interoperability Matrix for Zerto Environments for any vCenter upgrade or ZVM upgrade.
I hope I’ve addressed all your questions.