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Can SnapMirror resume from the checkpoint after a path change when restarting following a pause?

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ontap-9
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dp
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Applies to

  • ONTAP 9
  • SnapMirror

Answer

  • Yes, SnapMirror can resume from the checkpoint after a path change when restarting following a pause.
  • When pausing and resuming during the initial synchronization of SnapMirror, if a checkpoint has been generated, it will resume from that point.
  • Even if the communication path changes, SnapMirror has the capability to resume from the checkpoint.
  • However, it may be necessary to verify and adjust the settings due to the change in the communication path.
  • It is essential to ensure that appropriate network settings are configured for the new path. Here, appropriate network settings refer to a path where SnapMirror communication can proceed normally.
  • When changing the communication path, please confirm the following points:
 
  • Network Connection Verification:

Ensure that the new network path is properly connected. Use the ping command or traceroute command to verify the connection.

  • Firewall Settings Verification:

Confirm that the necessary ports are open for the new path. SnapMirror typically uses port TCP 10000.

  • Routing Settings Verification:

Ensure that appropriate routing settings are configured for the new network path. This guarantees that data transfer will proceed correctly.

  • SnapMirror Relationship Status Verification:

After changing the network settings, use the snapmirror show command to check the status of the SnapMirror relationships. Ensure that the settings have been correctly applied.

  • Conduct Test Transfers:

After making the configuration changes, perform test transfers to confirm that data is being transferred correctly.

Additional Information

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