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Does a LUN WWID remain the same after SVM DR failover?

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Applies to

  • NetApp ONTAP
  • Storage Virtual Machine (SVM) disaster recovery (SVM DR / SVM mirror)
  • SAN environments using LUNs (FCP or iSCSI)

Answer

  • In SVM DR, LUN WWIDs are not preserved.
  • DR destination LUNs are created as new LUN objects under a different SVM and receive new WWIDs.
  • After a failover, hosts see the LUNs as new devices.
  • Failover requires reconfiguration:   
    1. Recreate LUN mappings on the DR SVM.
    2. Rescan storage on hosts.
    3. Update host settings (for example, multipathing or application configurations).

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