An administrator may require an entire site to be powered off, due to hardware maintenance needs, such as firmware updates, component replacements, etc. This article describes the recommended steps to prepare a site with Zerto Virtual Replication installed to be offline during such maintenance.    Note: this article is intended to be used in the event that all VMs and hosts at a site must be shut down.  If only specific hosts with VRAs need to be shut down.


In order to prepare a site with Zerto Virtual Replication installed to be powered off, follow these steps:

  1. Perform a Guest OS Shut Down of the ZVM at the site that will be powered off.
  2. Once the ZVM is powered off, select each VRA in the vSphere Client, and perform a Guest OS Shutdown
    • Note: a proprietary third party version of VMware tools is installed on the VRAs and it is highly recommended to use the Guest OS Shutdown option.
  • Following the above steps, alerts are registered at peer sites regarding disconnections to this site. These are expected as the resources are now unavailable.
  • If VPGs are configured with the affected site as a Target Site, they will enter "Bitmap Sync" status until this site is once again available. If VPGs are configured with the affected site as a Source Site, the VPG will be in a status of "Recovery Possible" at the target site.



Once the maintenance on the site is complete, follow these steps:


  1. Confirm that the vCenter VM is online and available.
  2. Confirm that all hosts are online and connected to vCenter.
  3. Confirm that all datastores are online and available to the hosts.
  4. Confirm that the network connection between sites is available, healthy, and that any relevant port rules required by Zerto Virtual Replication are preserved.
  5. Power on the ZVM VM.
  6. Power on the VRA VMs.
  7. A few minutes after ZVM VM has been powered on, verify that the the Zerto Virtual Replication GUI is available via the vSphere Client.
  8. Confirm that the connection between Zerto Virtual Replication site components is reestablished - this will be noted in the "Alerts" report area of the Zerto Virtual Replication GUI.
Note: be advised that it may take up to 15 minutes for all components to successfully reestablish their connections and for all VPGs to proceed with their appropriate syncs.