In order to ensure protection is not affected when upgrading or replacing a vCenter, the vCenter database should be preserved
Upgrade then make sure Replication all comes back green
Before Upgrading the Hosts to the latest ESXi , double check the current version of Zerto supports the version you are putting on or you will get the error on Upgrade “VRA unsupported esx version”
Once VM’s migrated , shutdown VRA and VRAH , restart upgrade host
You can migrated VCC machines to other hosts without effecting replication
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