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    • A false "SwitchFanNotPresent_Alert" message is reported by Cluster Health Monitor
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/False_SwitchFanNotPresent_Alert_alert_is_reported_by_Health_Monitor
      Applies to ONTAP 9 Issue Despite no issues seen on cluster switches, following AutoSupport alert messages are received: Call home for Health Monitor process cshm: SwitchFanNotPresent_Alert
    • Initializing snapmirror relationship to an aggregate with FabricPool and destination aggregate fills up
      https://kb.netapp.com/on-prem/ontap/DP/SnapMirror/SnapMirror-KBs/Initializing_snapmirror_relationship_to_an_aggregate_with_FabricPool_and_destination_aggregate_fills_up
      Applies to ONTAP 9 FabricPool Issue While initializing snapmirror relationship to destination aggregate with Fabricpool and the destination aggregate ran out of space.
    • Node reports StorageFCAdapterFault_Alert for down or unused FC ports
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/Node_reports_StorageFCAdapterFault_Alert_for_down_or_unused_FC_ports
      FC ports in initiator mode The node sends AutoSupport alerts for StorageFCAdapterFault for down FC ports after every reboot. The reported port is not in use. The Metrocluster_Node subsystem health get...FC ports in initiator mode The node sends AutoSupport alerts for StorageFCAdapterFault for down FC ports after every reboot. The reported port is not in use. The Metrocluster_Node subsystem health gets degraded: cluster::> system health subsystem show Probable Cause: FC initiator adapter 4d is at fault. Ensure that the FC initiator link has not been tampered with. Verify the operational status of the FC initiator adapter by using the command "system node run -node
    • An AFF A800 can trigger an Environmental Shutdown due to a critical temperature issue in the "LED_Board_Temp1" sensor
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/An_AFF_A800_can_trigger_an_Environmental_Shutdown_due_to_a_critical_temperature_issue_in_the_LED_Board_Temp1_sensor
      An AFF A800 can trigger an Environmental Shutdown due to a critical temperature issue in the "LED_Board_Temp1" Record 1890: Sun Dec 01 23:34:31.610000 2019 [IPMI.notice]: 0034 | 02 | EVT: 01592d2d | L...An AFF A800 can trigger an Environmental Shutdown due to a critical temperature issue in the "LED_Board_Temp1" Record 1890: Sun Dec 01 23:34:31.610000 2019 [IPMI.notice]: 0034 | 02 | EVT: 01592d2d | LED_Board_Temp1 | Assertion Event, "Upper Critical going high" | Reading: 45.000 | Threshold: 45.000 Record 1891: Sun Dec 01 23:34:34.640000 2019 [IPMI.notice]: 0035 | 02 | EVT: 8159182d | LED_Board_Temp1 | Deassertion Event, "Upper Critical going high" | Reading: 24.000 | Threshold: 45.000
    • New Cisco Nexus 9336C-FX2 cluster switch is unsupported
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/New_Cisco_Nexus_9336C-FX2_cluster_switch_is_unsupported
      Applies to Cisco 9336C-FX2 ONTAP 9.1 - 9.4 ONTAP 9.5P1 - 9.5P15 ONTAP 9.6P1 - 9.6P11 ONTAP 9.7P1 - 9.7P9 Issue Cisco Nexus 9336C-FX2 showing as unsupported: HA Group Notification (Health Monitor proce...Applies to Cisco 9336C-FX2 ONTAP 9.1 - 9.4 ONTAP 9.5P1 - 9.5P15 ONTAP 9.6P1 - 9.6P11 ONTAP 9.7P1 - 9.7P9 Issue Cisco Nexus 9336C-FX2 showing as unsupported: HA Group Notification (Health Monitor process cshm: UnsupportedSwitch_Alert[Switch_Name]) ALERT CSHM-SWITCH-CONFIG.XML autosupport shows the switches as Unsupported Model System health alert for Unsupported cluster switch is detected
    • Health monitor 'MixOfIOMAandIOMBConnection_Alert'
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Health_monitor_MixOfIOMAandIOMBConnection_Alert
      Applies to AFF and FAS systems Issue Health monitor raised an alert with Alert Id = 'MixOfIOMAandIOMBConnection_Alert' Example: Mon May 18 17:11:29 CEST [NETAPP-01: nchmd: hm.alert.raised:alert]: Aler...Applies to AFF and FAS systems Issue Health monitor raised an alert with Alert Id = 'MixOfIOMAandIOMBConnection_Alert' Example: Mon May 18 17:11:29 CEST [NETAPP-01: nchmd: hm.alert.raised:alert]: Alert Id = MixOfIOMAandIOMBConnection_Alert , Alerting Resource = 265470534849464912:3 raised by monitor node-connect
    • How to determine if an AFF or FAS model supports an external USB device
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_determine_if_an_AFF_or_FAS_model_supports_an_external_USB_device
      Applies to ONTAP 9 AFF A700, AFF A700s, AFF A300, AFF A200 and later models FAS9000, FAS8200, FAS2650, FAS2620 and later models Description Most AFF and FAS hardware models have one or more USB Type A...Applies to ONTAP 9 AFF A700, AFF A700s, AFF A300, AFF A200 and later models FAS9000, FAS8200, FAS2650, FAS2620 and later models Description Most AFF and FAS hardware models have one or more USB Type A ports. However, not all models support use of that port for external USB devices for use with activities such as boot_recovery or coredump saving. This support was added with AFF and FAS models introduced with ONTAP 9.1.
    • "SwitchFanNotPresent_Alert reported" by CSHM for Cisco cluster network switches
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/SwitchFanNotPresent_Alert_reported_by_CSHM_for_Cisco_cluster_network_switches
      The following “SwitchFanNotPresent_Alert” is reported by CSHM for all the fan modules of the cluster network switch: The cluster switch health monitor (CSHM) can only detect that a fan or a power supp...The following “SwitchFanNotPresent_Alert” is reported by CSHM for all the fan modules of the cluster network switch: The cluster switch health monitor (CSHM) can only detect that a fan or a power supply is missing when the queries to the switch fail to return information about all the fans or power supplies. Login to both the cluster switches and verify if all the fan modules are operating in good condition, by running the following command:
    • Alternate control path hardware failed alert reported in event logs
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Alternate_control_path_hardware_failed_alert_reported_in_event_logs
      Applies to FAS with Inband ACP (Alternate Control Path) AFF with Inband ACP Issue ACP hardware failure is reported in the event logs: Fri Oct 25 11:10:26 CEST [nodename: dsa_worker5: ses.status.ACPErr...Applies to FAS with Inband ACP (Alternate Control Path) AFF with Inband ACP Issue ACP hardware failure is reported in the event logs: Fri Oct 25 11:10:26 CEST [nodename: dsa_worker5: ses.status.ACPError: alert]: DS2246 (S/N xxxxxxxxxxxxxxx) shelf 0 on channel 0a ACP Processor error for SAS shelf ACP processor 2: critical status; Alternate Control Path hardware failed This module is on the rear of the shelf at the top right, on shelf module B.
    • What is an active cable?
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/What_is_an_active_cable
      Active cables are copper cables for data transmission that use a silicon chip (semiconductor) to boost the performance of the cable. In active cables, one or several semiconductor chips are embedded i...Active cables are copper cables for data transmission that use a silicon chip (semiconductor) to boost the performance of the cable. In active cables, one or several semiconductor chips are embedded in the cable to compensate for some or all of these impairments. This active boosting allows cables to be more compact, thinner and longer, and transmit data faster than their passive equivalents.
    • Operational status of the LIF reporting down when hosted on one of the Node in Cluster
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Operational_status_of_the_LIF_reporting_down_when_hosted_on_one_of_the_Node_in_Cluster
      Applies to When the LIF is hosted on Node-A01 the admin and operational status is reporting UP, but the same LIF when migrated/reverted to Node-A02, the operational status is reporting down with below...Applies to When the LIF is hosted on Node-A01 the admin and operational status is reporting UP, but the same LIF when migrated/reverted to Node-A02, the operational status is reporting down with below error message, Error: This LIF is down because Vserver status is not yet available on node "Node-A01". Wait a few minutes, then check the LIF's status again. Destroying the LIF and re-creating the LIF also fails on Node-A02, and the new LIF also reports operational status as down.