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Preparing for the upgrade

Before installing the latest Data ONTAP release on your storage system, you need to verify information and complete some tasks.

Steps

  1. Verify that your system meets the minimum requirements.

    For more information about system requirements, see the Release Notes for your Data ONTAP upgrade target release.

  2. Confirm that all paths to disk are visible to the system by entering the following command:
    storage show disk –p
  3. Confirm that there are no failed disks by entering the following command:
    vol status –f
  4. Verify that all aggregates are online by entering the following command:
    aggr status
  5. If your systems are configured for MultiStore technology, enter the following command to verify that all vFiler units are running:
    vfiler status -a
  6. Verify that you have resolved any upgrade issues.

    For more information about upgrade issues, see the "Important cautions" section of the Release Notes for your Data ONTAP upgrade target release.

  7. Ensure that you have a current Snapshot copy of the root volume of any system being upgraded.

    For more information about creating Snapshot copies, see the Data ONTAP Data Protection Online Backup and Recovery Guide for 7-Mode.

  8. Determine whether you need to update disk or disk shelf firmware.

    Note: You should ensure that any required disk firmware and disk shelf firmware updates have been completed before beginning a nondisruptive upgrade. In particular, you should upgrade disk firmware at least one day before beginning a nondisruptive Data ONTAP upgrade, because automatic background disk firmware updates can take a long time in large-capacity systems.

  9. If you have storage systems in high-availability configurations, verify that they are correctly configured by using the Config Advisor tool.
  10. If you are using SnapMirror, identify the source and destination storage systems, and ensure that the following requirements are met, depending on the type and mode of replication:
    If you are using... Then...
    Volume SnapMirror Ensure that you upgrade the storage systems containing the destination volumes before you upgrade the storage systems with the source volumes.
    Synchronous SnapMirror or semi-synchronous SnapMirror Ensure that the storage systems containing the source volumes and the storage systems containing the destination volumes are running the same Data ONTAP version, so that you can upgrade the systems simultaneously.

    These requirements do not apply to qtree SnapMirror.

  11. If you are running MetroCluster systems, verify that all MetroCluster components are compatible with the target release.

    For more information, see your MetroCluster documentation and the MetroCluster Compatibility Matrix. If your MetroCluster uses LUNs on storage arrays, see also the V-Series MetroCluster solutions in the Interoperability Matrix.

  12. If you are using the nondisruptive upgrade method, ensure that your systems meet the requirements for nondisruptive upgrades.