Upgrading Zerto Virtual Replication : Upgrading or Reinstalling VMware Components (VMware Environments Only) : Upgrading vCloud Director
  
Upgrading vCloud Director
Zerto recommends that you upgrade vCD rather than reinstalling it.
Zerto Virtual Replication components are not affected by a vCD upgrade. Protection continues, and no additional procedures are required.
When upgrading vCD from version 1.5, to 5.1 or higher, you must change the storage profile for each protected virtual machine from * (any) to a valid storage profile to use for that virtual machine. Contact Zerto support for help with the upgrade of VPGs.
If you need to reinstall vCloud Director, contact Zerto support for help throughout the re-installation.