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    • 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
    • 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.
    • https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/How_to_map_SAS_cabling_in_an_ATTO_FibreBridge_based_configuration
      Applies to ATTO 6500N FibreBridge ATTO 7500N FibreBridge ATTO 7600N FibreBridge MetroCluster Description This article describes how to verify ATTO FibreBridge SAS cabling in a MetroCluster environment...Applies to ATTO 6500N FibreBridge ATTO 7500N FibreBridge ATTO 7600N FibreBridge MetroCluster Description This article describes how to verify ATTO FibreBridge SAS cabling in a MetroCluster environment without a physical inspections.
    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_map_SAS_cable_connecting_to_which_port_on_IOM3_IOM6_from_command_line
      Applies to DS2246 DS4243 DS4246 DS4486 I/O Module (IOM) 3 I/O Module (IOM) 6 Description This article explains how to map SAS cable connecting to which port on IOM3/IOM6 from command line.
    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Shelf_connected_to_FAS__AFF_system_missing_a_path_to_the_Node
      Level 1: WWN <World_Wide_Name_id>, ID 0, Product 'DS424IOM3', Rev '0212', Slot A Level 2: WWN <World_Wide_Name_id>, ID 1, Product 'DS424IOM3', Rev '0212', Slot A Level 3: WWN <World_Wide_Name_id>, ID ...Level 1: WWN <World_Wide_Name_id>, ID 0, Product 'DS424IOM3', Rev '0212', Slot A Level 2: WWN <World_Wide_Name_id>, ID 1, Product 'DS424IOM3', Rev '0212', Slot A Level 3: WWN <World_Wide_Name_id>, ID 2, Product 'DS424IOM3', Rev '0212', Slot A Level 4: WWN <World_Wide_Name_id>, ID 3, Product 'DS424IOM3', Rev '0212', Slot A Level 5: WWN <World_Wide_Name_id>, ID 4, Product 'DS424IOM3', Rev '0212', Slot A Level 6: WWN <World_Wide_Name_id>, ID 5, Product 'DS424IOM3', Rev '0212', Slot A
    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Cable_attached_to_SAS_port_x_is_functioning_in_a_degraded_mode
      'Cable attached to SAS port x functioning in a degraded mode' messages are reported. There are few possible causes and this article helps in troubleshooting the issue.
    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Shelf_connected_to_FAS%2F%2F_AFF_system_missing_a_path_to_the_Node_due_to_SAS_port_down
      Level 1: WWN <World_Wide_Name_id>, ID 0, Product 'DS424IOM3', Rev '0212', Slot A Level 2: WWN <World_Wide_Name_id>, ID 1, Product 'DS424IOM3', Rev '0212', Slot A Level 3: WWN <World_Wide_Name_id>, ID ...Level 1: WWN <World_Wide_Name_id>, ID 0, Product 'DS424IOM3', Rev '0212', Slot A Level 2: WWN <World_Wide_Name_id>, ID 1, Product 'DS424IOM3', Rev '0212', Slot A Level 3: WWN <World_Wide_Name_id>, ID 2, Product 'DS424IOM3', Rev '0212', Slot A Level 4: WWN <World_Wide_Name_id>, ID 3, Product 'DS424IOM3', Rev '0212', Slot A Level 5: WWN <World_Wide_Name_id>, ID 4, Product 'DS424IOM3', Rev '0212', Slot A Level 6: WWN <World_Wide_Name_id>, ID 5, Product 'DS424IOM3', Rev '0212', Slot A
    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/HOST_PORT_FAIL_Disabled_due_to_excessive_invalid_dword_error_-_AutoSupport_Message
      Disk shelf fault LED is on, and EMS log shows error information about disk shelf. There could be  multiple possible causes and requires further analysis to identify a port or SAS cable issue