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Category: Zerto (page 1 of 3)

Zerto Replication – Export/Import VPG Settings

On occasion, administrators may need to import and export Zerto Virtual Protection Group (VPG) settings. Whether you need to export settings prior to un-installing Zerto and import settings after re-install or simply need a settings backup, Zerto has a utility to perform this. Let’s walk through the process of exporting and importing Zerto VPGs.

Export Virtual Protection Group (VPG) Settings

To begin, launch the Zerto Diagnostics application. You can either search your Programs for Zerto Diagnostics or launch the program from C:\Program Files\Zerto\Zerto Virtual Replication.

Zerto Diagnostics

After launching the Zerto Diagnostics application, select the Export Virtual Protection Group (VPG) settings radio and click Next.

Zerto Export VPG

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Zerto Replication – Create Virtual Protection Group

For the final chapter of our Zerto Replication install series, we will create a Virtual Protection Group (VPG) and start replicating virtual machines. As a recap, we have already installed the ZVM, paired the protected and recovery sites, and deployed VRAs.

What is a Virtual Protection Group?

Virtual Protection Groups essentially enable virtual machines to be affinity grouped. Meaning, you can define a group of vms that need to be recovered together. For example, an application that is comprised of a web server, database server, and app server could be grouped together, so they are recovered jointly. VPGs can also be grouped into tiers based on target RPOs. Virtual machines requiring different RPO levels can be grouped so that all critical machines recover together and less critical tiers can be brought up subsequently. It is also entirely possible to include just one virtual machine in a protection group. This provides flexibility in the event a single vm needs recovered as opposed to a group of vms.

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Zerto Replication – VRA Install and Pairing Sites

For the second part of our Zerto Replication install series, we are going install the Virtual Replication Appliances (VRAs) as well as pair our protected site to a recovery site.

First, let’s look at the Virtual Replication Appliance(s). VRAs are lightweight, Linux-based virtual machines that handle replication between sites. These VRAs are installed on each host that houses either a protected or a recovery virtual machine. As part of replication, the VRAs compress the data before traversing between sites.

VRA Requirements (Zerto 5.x – VMware Environment)

  • 5 GB datastore space
  • A minimum of 1 GB memory
  • VMware ESXi 4.0U1 or higher

Install Zerto Virtual Replication Appliances (VRA)

From the ZVM Dashboard, navigate to the Setup tab.

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Zerto Replication – Install ZVM

One of my favorite aspects regarding Zerto Replication is the ease of deployment. In this series, we will run through the installation and configuration of Zerto 5.5 for VMware environments. The series will consist of three parts to get Zerto Replication up and running.

  • Zerto Virtual Manager (ZVM) Install
  • Virtual Replication Appliance (VRA) Deployment/Site Pairing
  • Virtual Protection Group (VPG) Setup for Virtual Machines

The focus of today’s post is the Zerto Virtual Manager (ZVM) installation. If you are unfamiliar with the ZVM, it is the centerpiece of the Zerto solution, which oversees replication. It taps into vCenter server to monitor your environment and update Zerto components. Furthermore, the ZVM runs as a Windows service and serves up a user interface to manage Zerto activities. Typically, the ZVM is installed at both the recovery and protected sites.

Before we start, let’s look at some pertinent requirements.

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Zerto Duplicate MoRef Issue

Today, Zerto released a field notice for customers running Zerto 5.0 or 5.5 in VMware vSphere environments. The issue pertains to duplicate MoRef entries residing in the Zerto Virtual Manager database. These duplicate entries are being created by the ZVM or by the installer during an installation. Alone the presence of duplicate MoRefs doesn’t cause the issue. However, certain tasks or changes on the duplicated object can cause disruptions to synchronization or replication. This could force VPGs into an error state; consequently, rendering them unrecoverable. Zerto states that some environments may contain duplicated MoRefs, but not be impacted. Regardless, they recommend users on ZVR version 5.0 or 5.5 to upgrade to version 5.5U2P2. P2 will identify and delete duplicate entries. If you are unable to upgrade, Zerto Support can aid in identification and further mitigation of the issue.

ZVR Affected Versions: 5.0, 5.0 U1, 5.0 U2, 5.0 U3, 5.0 U4, 5.5, 5.5 U1, 5.5 U2

What is a MoRef?

Managed Object References are unique identifiers given to all objects in a vSphere environment for identification and tracking purposes. MoRef’s are designated by the object type followed by an identification number. For example, vm-110 or host-95.

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