Replacing/Restoring a Virtual Machine from an OVF File

Replace a virtual machine (VM) from a ztC Edge-created Open Virtualization Format (OVF) file if you want to restore a VM on your ztC Edge system by overwriting the VM with a previous backup copy. (If you want to import a VM from a different system, see the overview in Creating and Migrating Virtual Machines.)

Typically, importing a VM creates a new instance of the VM with unique hardware IDs. Restoring a VM creates an identical VM with the same SMBIOS UUID, system serial number, and MAC addresses, if provided in the VM image, that your guest operating system and applications may require for software licensing. The hardware ID, though, of the restored VM is unique. If an identical VM already exists on the ztC Edge system, restoring the VM allows you to replace the VM and overwrite it with your previous copy.

You can restore a VM that already exists on a ztC Edge system only if you have previously exported a VM (see Exporting a Virtual Machine) from a ztC Edge system to OVF and Virtual Hard Disk (VHD) files on a supported network share or a USB device. Copy these files to your management PC, or mount the USB device or network share on the target ztC Edge system as described in Mounting a USB Device or Network-mounted Folder on the ztC Edge System, and then use the ztC Edge Console on the target ztC Edge system to restore the OVF and VHD files from your management PC.

To restore a VM

1. Log on to the ztC Edge Console on the target ztC Edge system.
2. On the Physical Machines page (see the Physical Machines Page) of a system configured with two nodes, verify that both PMs are in the running state and that neither PM is in maintenance mode or in the process of synchronizing.
3. If you are restoring a VM from a USB device or network share (instead of the PC running the ztC Edge Console), mount the device or share on the ztC Edge system as described in Mounting a USB Device or Network-mounted Folder on the ztC Edge System.
4. On the Virtual Machines page (see Virtual Machines Page), select the VM that you want to restore in the upper panel.
5. Do one of the following.
   • In the lower panel, click Restore.
   • Near the top pane, click Import/Restore/Recover, select Import/Restore, and click Next.

6. Select one of the following:

   • Import from my PC—Imports the VM from the PC running ztC Edge Console.

     1. Click Next.
     2. Click Browse to locate the appropriate folder on a local computer.
     3. Click the name of the desired file.
     4. Click Open.

   • Import from USB—Imports the VM from a USB device mounted on the ztC Edge system.

     Click Next and then select a partition from the pull-down menu. Click List OVFs/OVAs and select the appropriate file from the pull-down menu. You can optionally search for a file by entering the file name or partial file name in the Search Files box. The box lists OVA files that have names matching the name entered in the box, and that reside in various directories:

     • With the parent (root) directory as the search directory, the listed files reside in sub-directories in addition to the parent (root) directory.
     • With a sub-directory as the search directory, the listed files reside in the parent (root) directory in addition to the sub-directory.

   • Import from remote/network Windows Share(CIFS/SMB)—Imports the VM from a Windows share on your local network.

     Click Next and enter values for Username and Password. For Repository, enter a value in the format \\machine_URL\ShareName (for example, \\192.168.1.34\MyOVFsForImport). Then, click List OVFs/OVAs and select the appropriate OVF file from the list.

   • Import from remote/network NFS—Imports the VM from an NFS share on your local network.

     Click Next and for Repository, enter the URL of the remote system in the format nnn.nnn.nnn.nnn/folder_name (do not include http:// or https://).

     Click List OVFs/OVAs to display a list of all files in the remote folder. Select the appropriate OVF file. You can optionally search for a file by entering the file name or partial file name in the Search Files box, or you can reorganize the list by clicking a column heading (Name, Date Modified, or Size). Click the file name to select the file, and then click Next.

7. Select Restore. (Scroll down the window, if necessary.) A warning message appears, stating that Restore will overwrite all existing data and configuration details and that you should proceed with caution.

8. Click Continue to proceed.

9. If prompted, add VHD files.

10. Review the information and make any desired edits, if necessary:

    • Name, Boot Interface, CPU, and Memory

      Displays the name of the VM, the boot interface, the number of vCPUs, and the total memory the VM can use. Edit the information, if necessary. (You cannot modify the Boot Interface; the system imports this setting from the OVF file.)

    • Protection Level

      Select the level of protection to use for the VM:

      • Fault Tolerant (FT)
      • High Availability (HA)
      • Unprotected (NONE)

      For information about these levels of protection, see Creating a New Virtual Machine and Modes of Operation.

    • Storage

      Displays the name and size of each volume. In the Create column, select a box for a volume to allocate storage for the volume on the ztC Edge system (the boot volume is required). In the Restore Data column, select a box to import data for a volume from the VHD file.

    • Network

      Displays all of the available networks. You can remove a network or add one that is not already allocated. A minimum of one network is required.

      The total number of networks cannot exceed the number of business networks on the ztC Edge system. You can select which networks to remove in the wizard, or connect more business networks to the ztC Edge system before or after restoring the VM to restore the network connections.

11. Optionally, clear the check box for Auto start Virtual Machine after restore if you need to reprovision the VM before starting it for the first time.

12. Click Restore to begin restoring the VM. When the transfer is complete, click Done to close the wizard.

    Note: Restored volumes begin to appear on the Volumes page of the ztC Edge Console while the restore process is still in progress. Do not attach or remove any of these restored volumes until the restore window reports that the process is complete; otherwise, the restore process fails.

13. If applicable, use the Reprovision Virtual Machine wizard to allocate additional resources to the VM, as described in Reprovisioning Virtual Machine Resources.

    When you are finished reprovisioning the VM, click Start to boot the VM.

After you verify that the restored VM is functioning properly, the restore process is complete; however, the ztC Edge system may continue to synchronize data between PMs to enable High Availability (HA) or Fault Tolerant (FT) operation.

Troubleshooting

If necessary, use the following information to resolve problems with the restore process.

To clean up after a canceled or failed restore process

In the ztC Edge Console on the target system, remove the restored VM and any volumes associated with the restored VM, if present.