Article number
000003571
Affected Versions
7.5 Update 3
7.5 Update 2
7.5 Update 1
7.5 Patch 1
7.5
7.0 Update 3
7.0 Update 2 Patch 2
7.0 Update 2 Patch 1
7.0 Update 2
7.0 Update 1 Patch 1
7.0 Update 1
7.0 Patch 2
7.0 Patch 1
7
6.5 Update 4 Patch 1
6.5 Update 4
6.5 Update 3 Patch 1
6.5 Update 3
6.5 Update 2
6.5 Update 1 Patch 1
6.5 Update 1
6.5
8.0
8.0 Update 1
8.0 Update 1 Patch 1
8.0 Update 2
8.5
8.0 Update 3
8.5 Update 1
8.0 Update 4
Source Hypervisor
All
Target Hypervisor
All

Zerto Replication Handling of VMware Snapshots

Viewed 151 times

Description

User performs a snapshot of a protected VM and then reverts back to this snapshot.

Zerto does not replicate VMware snapshots. The recovery VM, therefore, does not have any associated snapshots. Because ZVR replicates the live state of the VM, recovering the VM recovers to a state where there are no snapshots in the VM config file nor any snapshot volumes on the recovery datastore(s).
 
Deleting a snapshot from the protected VM has no effect on the recovery site, as nothing changes live state of the VM. If the protected VM is rolled back to a previous snapshot, the live state of the VM has changed. The VPG will no longer be in a consistent state and a Force Sync must be completed in ZVR to re-synchronize the VPG.

Starting in Zerto 6.5, Force Sync is performed automatically when Zerto observes the rollback being performed in vCenter.

Summary

User performs a snapshot of a protected VM and then reverts back to this snapshot.

Note that Zerto does not replicate VMware snapshots. ZVR replicates IOs to the recovery site and treats the snapshots in vSphere as irrelevant. The recovery VM, therefore, does not have any associated snapshots. Because ZVR replicates the live state of the VM, recovering the VM recovers it a state where there are no snapshots in the VM config file nor any snapshot volumes on the recovery datastore(s).
 
Deleting a snapshot from the protected VM has no effect on the recovery site, as nothing changes live state of the VM. If the protected VM is rolled back to a previous snapshot, the live state of the VM has changed. The VPG will no longer be in a consistent state and a Force Sync must be completed in ZVR to re-synchronize the VPG.  A user may pose questions regarding the affects of VMware snapshots and Zerto Virtual Replication.

Steps

  • Prior to Zerto 6.5, a Force Sync needs to be manually performed when a proteted VM is rolled back to a snapshot.
  • Starting in Zerto 6.5, the Force Sync is performed automatically when Zerto observes the rollback being performed in vCenter.