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AFF300 to AFF400 controller upgrade fails because of FC link flapping on storage ports

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metrocluster
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metrocluster
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Applies to

  • ONTAP 9
  • AFF300 -> AFF400 controller upgrade
  • 2 node stretch MetroCluster

Issue

  • New controller:
    • In maintenance mode all ports slot 1 (disk access) go intermittently offline and online
    • FC link up/down events seen for the ports connecting to ATTO FibreBridges
    • Node may panic with error "no disk access" after some time

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