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    • https://kb.netapp.com/Legacy/NetApp_HCI/Hardware/Node_offline_with_Management_controller_unavailable_errors_in_SEL
      Applies to NetApp H610S storage node System Event Log (SEL) Issue Node goes offline with Management controller unavailable errors found in System Event Log (SEL): SEL Record ID : 004b Record Type : 02...Applies to NetApp H610S storage node System Event Log (SEL) Issue Node goes offline with Management controller unavailable errors found in System Event Log (SEL): SEL Record ID : 004b Record Type : 02 Timestamp : 08/26/2020 18:45:09 Generator ID : 0020 EvM Revision : 04 Sensor Type : Management Subsystem Health Sensor Number : 8f Event Type : Sensor-specific Discrete Event Direction : Deassertion Event Event Data : 03ffff Description : Management controller unavailable
    • https://kb.netapp.com/Legacy/NetApp_HCI/Hardware/NetApp_H610S_node_reboots_unexpectedly_with_uncorrectable_machine_check_error
      NetApp H610S node reboots unexpectedly with an uncorrectable machine check exception. A node in an Element cluster logs a nodeOffline event for approximately 7 to 15 minutes.
    • https://kb.netapp.com/Legacy/NetApp_HCI/Hardware/Management_controller_unavailable_SEL_entry_due_to_false_positive_AC_lost_event
      "AC Lost" SEL event prior the “Management controller unavailable” with sensor number 0x7a but a storage node did not reboot Aug/12/2023 16:06:12 [Warning] [BMC FW Health] [Management Subsystem Health]..."AC Lost" SEL event prior the “Management controller unavailable” with sensor number 0x7a but a storage node did not reboot Aug/12/2023 16:06:12 [Warning] [BMC FW Health] [Management Subsystem Health] Management controller unavailable (BMC hardware watchdog timeout reset) - Asserted Jul/8/2023 15:36:13 [Warning] [BMC FW Health] [Management Subsystem Health] Management controller unavailable (BMC hardware watchdog timeout reset) - Asserted