One node of a 2-node cluster is shut down to replace a NIC. All RDB rings fall out of quorum. To diagnose the problem, what should the administrator do first?
A. disconnect and reconnect the InfiniBand cable
B. issue storage failover show from the clustershell
C. issue cluster ha show from the clustershell
D. verify that the cluster switch is functioning properly
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https://kb.netapp.com/Advice_and_Troubleshooting/Data_Storage_Software/ONTAP_OS/Troubleshooting_Workflow%3A_MHost_RDB_apps_out_of_quorum