Reverse Protection For a Moved VPG
When moving the virtual machines in a VPG you specify whether you want reverse protection from the recovery site back to the original protected site.
Reverse Protection Specified
In vSphere to vSphere environments only:
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When moving the virtual machines in a VPG and you specify reverse protection, the virtual machines are moved to the recovery site and then protected using the values specified during the move. |
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Data is promoted from the journal to the moved virtual machines and then synchronization with the original site is performed so that the VPG is fully protected. |
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The synchronization performed uses the original protected disks and is a Bitmap Sync. |
Considerations:
A Delta Sync will be triggered if any of the following conditions apply:
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From the time the VPG was moved until the time of synchronization, the original VM was powered on. |
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The original VM was migrated to a different host on the protected environment. |
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The ZVM and VRA on either the protected or recovery sites are running Zerto versions older than 8.0. |
If the update VPG that is automatically triggered as part of the move with reverse protection fails, the VPG will enter a state of Needs Configuration.
In order to apply reverse protection, the user will have to manually edit the VPG settings.
After the user edits and saves the VPG, an update VPG event is triggered, followed by a delta sync.
In all environments except vSphere to vSphere:
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When moving the virtual machines in a VPG and you specify reverse protection, the virtual machines are moved to the recovery site and then protected using the values specified during the move. |
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Data is promoted from the journal to the moved virtual machines and then synchronization with the original site is performed so that the VPG is fully protected. |
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The synchronization performed uses the original protected disks and is either a Delta Sync or, if there is only one volume to synchronize, a Volume Delta Sync. |
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A sync is required since the recovered machines can be updated while data is being promoted. |
Reverse Protection Not Specified
If you do not specify reverse protection, the protected disks are removed along with the protected virtual machines at the end of the procedure. In this case, if you want to move the virtual machines back again to the original site, you will not be able to use the original disks and an initial synchronization will have to be performed. The VPG definition is kept with the status Needs Configuration and the reverse settings in the VPG definition are not set.
Clicking EDIT VPG displays the Edit VPG wizard with the settings filled in, using the original settings for the virtual machines in the VPG from the original protected site, except for the volumes, since the last step of the Move operation is to delete the virtual machines from the original protected site inventory, including the disks. To start replicating the virtual machines in the VPG, specify the disks to use for replication and optionally, make any other changes to the original settings and click DONE. An initial synchronization is performed.
See also: