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    • "sysconfig -a" reports Shelf Serial Number instead of Shelf ID after IOM reseat/replacement
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/sysconfig_a_reports_Shelf_Serial_Number_instead_of_Shelf_ID_after_IOM_reseat_replacement
      sysconfig -a displays shelf serial number instead of the shelf ID in front the disks: sasadmin expander_map might display an invalid/alternate shelf ID : Level 10: WWN 50050cc104fd6d3f, ID 150, Serial...sysconfig -a displays shelf serial number instead of the shelf ID in front the disks: sasadmin expander_map might display an invalid/alternate shelf ID : Level 10: WWN 50050cc104fd6d3f, ID 150, Serial Number ' SHM09797XXXXX', Product 'DS424IOM3 ', Rev '0172', Slot B You might receive a duplicate shelf ID error in the messages log: [sas.shelf.conflict:error]: At least two SAS disk shelves have the same disk shelf ID.
    • EMS reports pcie.stealth.errors DevStatus(Corr)
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/EMS_reports_pcie_stealth_errors_DevStatus_Corr
      EMS reports pcie.stealth.errors DevStatus(Corr)
    • What do the MetroCluster HealthMonitoring alerts mean?
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/What_do_the_MetroCluster_HealthMonitoring_alerts_mean
      This alert indicates that there is no InterSwitch Link (ISL) present between the Fibre Channel switches in between the sites of the MetroCluster. Indicates a link from the FC port of the bridge to the...This alert indicates that there is no InterSwitch Link (ISL) present between the Fibre Channel switches in between the sites of the MetroCluster. Indicates a link from the FC port of the bridge to the switch or controller is not working correctly This alert indicated that one or more of the MetroCluster Fibre Channel switches is no longer reachable via the Ethernet network. A power supply of the MetroCluster backend FibreChannel switch has a failed or a the power is interrupted
    • How to change disk ownership between HA pairs in ONTAP platforms
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_change_disk_ownership_between_HA_pairs_in_ONTAP_platforms
      Applies to FAS/AFF Platforms ONTAP 9 Data ONTAP 8 7-Mode Description The following procedure applies to any controller that has software-based disk ownership enabled.
    • How does Data ONTAP respond, when a medium error occurs during a disk reconstruction?
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_does_Data_ONTAP_respond_when_a_medium_error_occurs_during_a_disk_reconstruction
      KB article explains how Data ONTAP responds when a medium error occurs during a disk reconstruction. Media scrub is proactive reading of all the disks to detect and fix media errors before they cause ...KB article explains how Data ONTAP responds when a medium error occurs during a disk reconstruction. Media scrub is proactive reading of all the disks to detect and fix media errors before they cause issues during reconstruction or double errors. Although, this significantly reduces the number of issues caused by such errors, it cannot prevent all the errors.
    • Disk shelf reports "Backplane VPD SEEROM corrupt or unreadable"
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Disk_shelf_reports_the_critical_warning_non_critical_status_Backplane_VPD_SEEROM_corrupt_or_unreadable
      Disk shelf reports SES status warning, ‘Backplane VPD SEEROM corrupt or unreadable’. This issue can be resolved by opening a support case with NetApp Technical Support or upgrade to IOM firmware versi...Disk shelf reports SES status warning, ‘Backplane VPD SEEROM corrupt or unreadable’. This issue can be resolved by opening a support case with NetApp Technical Support or upgrade to IOM firmware versions which have a fix for this issue.