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    • 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/OHW/OHW-KBs/How_to_detect_and_manage_solid-state_drives_SSDs_approaching_the_end_of_their_rated_life_in_AFF_FAS_systems
      SSDs of the same make and model deployed at the same time on the same system are highly likely to reach end-of-life around the same time. When an SSD reaches 100% of rated life, it might not be able t...SSDs of the same make and model deployed at the same time on the same system are highly likely to reach end-of-life around the same time. When an SSD reaches 100% of rated life, it might not be able to retain data while powered off for long periods of time. ONTAP generates an event when the rated life of an SSD reaches any of the following three (3) thresholds: The event messages also give an estimate of the number of weeks of rated life remaining for each SSD, based on past usage.
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_troubleshoot_optical_SAS_cable_issues
      Applies to Streched MetroCluster ONTAP 9 ONTAP 8 Description This article describes how to troubleshoot optical SAS cable issues
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_fix_a_mirror_degraded_system
      Applies to MetroCluster ONTAP 9 ONTAP 8 SyncMirror degraded Description Mirror degraded indicates that an aggregate that was configured as a mirrored aggregate is not mirrored any more. This article d...Applies to MetroCluster ONTAP 9 ONTAP 8 SyncMirror degraded Description Mirror degraded indicates that an aggregate that was configured as a mirrored aggregate is not mirrored any more. This article describes the procedure to be followed to fix a mirror degraded system.
    • https://kb.netapp.com/Legacy/ONTAP/7Mode/AutoSupport_message__ARS_Partial_Path_Transition
      Data ONTAP 7 and earlier Sysconfig -a with single-path or multi-path under System Storage Configuration Potential Impact: Low Storage with a single path left undiagnosed can cause unexpected outages i...Data ONTAP 7 and earlier Sysconfig -a with single-path or multi-path under System Storage Configuration Potential Impact: Low Storage with a single path left undiagnosed can cause unexpected outages if the remaining path fails. Additionally, there is a potential performance impact when some drives are single-pathed while other members of the raid group are multi-pathed. A combination of drives reporting Primary Port and Secondary Port Some drives reporting Primary Port only in storage show
    • 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_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_admin_status_being_disabled
      Applies to MetroCluster DR mirror Admin Status 'disabled' Issue The DR configuration is disabled by the user. mcc-site1::> metrocluster interconnect show Mirror Mirror Partner Admin Oper Node Partner ...Applies to MetroCluster DR mirror Admin Status 'disabled' Issue The DR configuration is disabled by the user. mcc-site1::> metrocluster interconnect show Mirror Mirror Partner Admin Oper Node Partner Name Type Status Status Adapter Type Status mcc8040-ams2-02 DR disabled offline <-- DR mirror disabled mcc-site1-02 mcc-site1-01 HA enabled online mlx4_0 IB Up mcc8040-ams2-01 DR enabled online fcvi_device_0 fcvi_device_1 FC-VI Up 8 entries were displayed.
    • 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/Legacy/ONTAP/7Mode/Performance_issues_on_ethernet_networks_when_the_e0m_management_interface_is_on_the_same_subnet_as_production_traffic
      [netapp: netmon_main: net.if.mgmt.sameSubnet:warning]: ifconfig: IP address 'x.x.x.x' configured on dedicated management port 'e0M' is on the same subnet as IP address 'x.x.x.x' configured on data por...[netapp: netmon_main: net.if.mgmt.sameSubnet:warning]: ifconfig: IP address 'x.x.x.x' configured on dedicated management port 'e0M' is on the same subnet as IP address 'x.x.x.x' configured on data port Prod1. [net.if.mgmt.defaultGateway:warning] route: Static or default route with gateway 'x.x.x.x' is targeted to dedicated management interface 'e0M'. Data traffic using this route might be throttled due to low bandwidth, or dropped if a protocol filter is configured.
    • 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.