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    • https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/Dynamic_capacity_expansion_over_asynchronous_remote_volume_mirroring_results_in_failed_drives_and_failed_volumes
      When performing one of the following reconfigure operations on a volume group containing ARVM mirrors with PI enabled and a controller that supports multicore, the reconfigure operation can result in ...When performing one of the following reconfigure operations on a volume group containing ARVM mirrors with PI enabled and a controller that supports multicore, the reconfigure operation can result in PI Reftag errors that lead to failed drives, failed volumes and failed reconfigure operations. Due to the volume failure during reconfiguration, the only way to recover is to delete the volume group.
    • https://kb.netapp.com/on-prem/Switches/Cisco-KBs/How_to_check_differences_between_running_and_startup_config_of_a_Cisco_cluster_switch
      Applies to Cisco cluster switch ONTAP 9 Description This article describes how to review and address unsaved configuration changed in a Cisco cluster switch.
    • https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/What_does_ignore_inconsistent_set_to_ON_mean
      With this value set to on, Data ONTAP ignores any filesystem inconsistencies that exist, or that might arise. If set to on, contact NetApp Technical Support to address the issue. To check via CLI run ...With this value set to on, Data ONTAP ignores any filesystem inconsistencies that exist, or that might arise. If set to on, contact NetApp Technical Support to address the issue. To check via CLI run the following: ::>storage aggregate show -aggregate <aggr> filer::> storage aggregate show -aggregate aggr0 Disks for First Plex: 1.21.0, 1.21.1, 1.21.3 Disks for Mirrored Plex: - Ignore Inconsistent: on For Data ONTAP running in 7mode run the aggr status command to check the status.
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/Which_speed_should_the_MetroCluster_storage_adapters_have
      Applies to MetroCluster FC (Fabric Atttached) ONTAP 9 Answer All MetroCluster storage adapters need to be operated at the highest common speed. Example: A node has utilizes 32gbps and 16gbps ports for...Applies to MetroCluster FC (Fabric Atttached) ONTAP 9 Answer All MetroCluster storage adapters need to be operated at the highest common speed. Example: A node has utilizes 32gbps and 16gbps ports for storage connections to a 32gpbs MetroCluster backend switch. All storage ports need to then be operated at 16gbps speed as the highest common speed. Additional Information additionalInformation_text
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_recover_a_failed_System_Volume_from_an_nvfailed_state
      As part of error handling during MetroCluster switchover operations, a volume can end in an nvfailed state. This article covers on how to recover a system volume like ONTAP's Metadata Volumes (MDV) fr...As part of error handling during MetroCluster switchover operations, a volume can end in an nvfailed state. This article covers on how to recover a system volume like ONTAP's Metadata Volumes (MDV) from this situation. The instructions for restoring access to data volumes can be found here. To identify if a volume is in an nvfailed state, run the following command: In the above example, no volume is in nvfailed state. In the above example, one volume is in the nvfailed state.
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_many_paths_should_a_MetroCluster_have
      ​ ​ ​ Applies to MetroCluster Fabric-attached disks
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/MetroCluster_DR_mirroring_is_offline_with_one_port_of_a_node_being_down
      MetroCluster Mirror Down on one port of one node One port on one node is down with the mirror admin status being enabled. mcc-site1::> metrocluster interconnect show Mirror Mirror Node Partner Name Ty...MetroCluster Mirror Down on one port of one node One port on one node is down with the mirror admin status being enabled. mcc-site1::> metrocluster interconnect show Mirror Mirror Node Partner Name Type Status Status Adapter Type Status mcc-site1-01 mcc-site1-02 HA enabled online mcc8040-ams2-02 DR enabled online fcvi_device_0 FC-VI Down <== single port down mcc-site1-02 mcc-site1-01 HA enabled online mlx4_0 IB Up mcc8040-ams2-01 DR enabled online fcvi_device_0 FC-VI Up fcvi_device_1 FC-VI Up
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_create_unique_aggregate_names_in_a_MetroCluster
      Applies to MetroCluster ONTAP 9 Description This Article describes how to create unique aggregate names if accidently duplicate aggregate names got created. Procedure
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_address_and_identify_systems_that_connect_to_the_each_fabric_of_a_MetroCluster_using_the_same_ASIC
      Applies to ONTAP 9 MetroCluster Description This article describes how to address and identify systems that connect to the each fabric of a MetroCluster using the same ASIC.
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/MetroCluster_Storage_Virtual_Machines_stop_after_a_cluster_reboot_or_an_unplanned_power_outage
      All nodes in the cluster rebooted at the same time After an unplanned power outage or reboot of all controllers in 1 cluster of a MetroCluster, all Storage Virtual Machines (SVM) are marked as stopped...All nodes in the cluster rebooted at the same time After an unplanned power outage or reboot of all controllers in 1 cluster of a MetroCluster, all Storage Virtual Machines (SVM) are marked as stopped when the nodes are back online. Attempting to start the servers result in the following error: cluster1::> vserver start -vserver vserver1 Error: command failed: Failed to start Vserver "vserver1" because the management configuration for this Vserver is locked.
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_many_adapters_are_to_be_connected_to_each_Fabric_in_a_MetroCluster
      Applies to MetroCluster FC Fabric Description This article describes supported adapter setups in MetroCluster FC configuration.