Upgrade VCenter

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

Upgrade Hosts

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”

Migrate all VM’s to other VPG’s , migrate 6 VM’s at a time

Once VM’s migrated , shutdown VRA and VRAH , restart upgrade host

You can migrated VCC machines to other hosts without effecting replication

https://nolabnoparty.com/en/vsphere-6-7-upgrade-esxi-6-5-to-6-7-pt-3/

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Recently I tried to stop a VPG in Zerto after some DR testing, however, the Stop failed and the errors showing where : 

Forcibly delete VPG in Error State : Undo Log Isn’t Empty can’t start new transaction

After lodging a call with Zerto Support, we had to forcibly remove the VPG Via Powershell and Re-Add it back

**Before you do this I recommend you log down all the VM’s in the VPG and the Temp Data Drives

You will need to download and install the Zerto Powershell Tools : Zerto.PS.Commands.Installer for your version

After this is run you need to Open the Zerto Powershell and run 

ForceRemove-ProtectionGroup

Enter the VPG Name without Quotes

Enter the IP of the Zerto Server and username and password ( admin / password ) 

Once removed you can use the Zerto Virtual Replication Diagnostic Tool to import the VPG from the old setting file :

Then navigate to : 

C:\Program Files\Zerto\Zerto Virtual Replication\ExportedSettings

Find the latest backup and try and re-import the VPG

If this fails for whatever reason you will need to use the GUI at the customer side to recreate manually hence Note to backup VM names and Temp Data Drivers

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Recently had a few Zerto Recovery Groups ( VPG’s ) came up with the state 

Recovery is possible. (0%)

Connecivity to the VM’s where ok , and when I ran through the Wizard after Editing the VPG is came back with all ticks. A reboot of the server and SCVMM server did not clear the issue either

In the end we had to perform a “Force Sync” to resync the delta’s

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If you have a server which isn’t syncing and there is an Active Alert on the VPG Page stating the VM is powered off and you have confirmed it is on, try the following.

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