Determining whether VMFS volumes need to be remounted after transition

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After transitioning from Data ONTAP operating in 7-Mode to clustered Data ONTAP, you might have VMFS volumes that need to be remounted to bring VMFS datastores and VMs to their pretransition states.

  • For copy-based transitions, perform these steps before initiating the Storage Cutover operation in the 7-Mode Transition Tool (7MTT).

  • For copy-free transitions, perform these steps before initiating the Export & Halt 7-Mode Systems operation in the 7MTT.

Steps
  1. Open the Inventory Assessment Workbook generated by the Inventory Collect Tool (ICT).

  2. Click the SAN Host Filesystems tab.

  3. Check the Drive / Mount / Datastore Name column for the filesystems and datastores mounted on the host before transition.

  4. Make a note of the corresponding LUN naa IDs in the SCSI Device ID/Device Name column for the datastore.

  5. Check whether the naa IDs noted for the datastore are listed in the 7MTT mapping file that was generated after the transition.

    • If none of the naa IDs are present in the 7MTT mapping file, the datastore and its underlying LUNs were not part of the 7MTT transition and no remediation is required.

    • If only part of the naa IDs are present in the 7MTT mapping file, your transition is incomplete and you cannot proceed.

    • If all naa IDs are present, you must remount your VMFS volumes.

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