Pairing volumes using a pairing key

You can pair a local volume with another volume on a remote cluster using a pairing key. Use this method if there is Cluster Admin access to only the source cluster. This method generates a pairing key that can be used on the remote cluster to complete the volume pair.

Before you begin

Ensure that the clusters containing the volumes are paired.
Best Practices: Set the source volume to Read/Write and the target volume to Replication Target. The target volume should contain no data and have the exact characteristics of the source volume, such as size, 512e setting, and QoS configuration. If you assign an existing volume as the replication target, the data on that volume will be overwritten. The target volume may be greater or equal in size to the source volume, but it cannot be smaller.

About this task

This procedure describes volume pairing between two volumes using vCenter on the local and remote sites. For volumes not controlled by the vCenter Plug-in, you can alternately start or complete volume pairing using the Element web UI. For detailed instructions on starting or completing volume pairing from the Element web UI, see the user guide for NetApp Element software.
Note: The volume pairing key contains an encrypted version of the volume information and may contain sensitive information. Share this key only in a secure manner.

Steps

  1. From the vCenter that contains the local cluster, select NetApp Element Management > Management.
    Note: If two or more clusters are added, ensure that the cluster you intend to use for the task is selected in the navigation bar.
  2. Click the Volumes sub-tab.
  3. From the Active view, select the check box for the volume you want to pair.
  4. Click Actions.
  5. In the resulting menu, click Volume Pairing
  6. In the Volume Pairing dialog box, select Inaccessible Cluster.
  7. Select a Replication Mode from the list.
    • Real-time (Synchronous): Writes are acknowledged to the client after they are committed on both the source and target clusters.
    • Real-time (Asynchronous): Writes are acknowledged to the client after they are committed on the source cluster.
    • Snapshots Only: Only snapshots created on the source cluster are replicated. Active writes from the source volume are not replicated.
  8. Click Generate Key.
    Note: This action generates a text key for pairing and creates an unconfigured volume pair on the local cluster. If you do not complete the procedure, you will need to manually delete the volume pair.
  9. Copy the pairing key to your clipboard.
  10. Click Close.
  11. Make the pairing key accessible to the Cluster Admin at the remote cluster site.
    Note: The volume pairing key should be treated in a secure manner and not stored in a way that would allow accidental or unsecured access.
    Attention: Do not modify any of the characters in the pairing key. The key becomes invalid if it is modified.
  12. From the vCenter that contains the remote cluster, select NetApp Element Management > Management.
    Note: If two or more clusters are added, ensure that the cluster you intend to use for the task is selected in the navigation bar.
  13. Click the Volumes sub-tab.
  14. From the Active view, select the check box for the volume you want to pair.
  15. Click Actions.
  16. In the resulting menu, click Volume Pairing.
  17. In the Volume Pairing dialog box, select Complete Cluster Pairing.
  18. Paste the pairing key from the other cluster into the Pairing Key box.
  19. Click Complete Pairing.
    Note: After you confirm the pairing, the two clusters begin the process of connecting the volumes. During the pairing process, you can see progress messages in the Volume Status column of the Volume Pairs page. If an unexpected error occurs during the pairing process, check for and manually delete any unconfigured cluster pairs on the local and remote cluster and perform the pairing again.
    Attention: If you have not yet assigned a volume to be the replication target, the pairing configuration is not complete. The volume pair displays PausedMisconfigured until the volume pair source and target are assigned. You must assign a source and target to complete the volume pairing.
  20. Select Protection > Volume Pairs on either cluster.
  21. Verify the status of the volume pairing.
    Note: Volumes that are paired using a pairing key appear after the pairing process has been completed at the remote location.