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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.
    • How to map DS424x elements by error messages and SES codes to a physical location on the shelf
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_map_DS424x_elements_by_error_messages_and_SES_codes_to_a_physical_location_on_the_shelf
      Applies to Data ONTAP 7 and earlier DS424x Description Unrecoverable condition is reported: [ses_admin:error]:DiskShelf shelf [shelf] on channel [channel]. Map the 8 voltage and 12 temperature sensors...Applies to Data ONTAP 7 and earlier DS424x Description Unrecoverable condition is reported: [ses_admin:error]:DiskShelf shelf [shelf] on channel [channel]. Map the 8 voltage and 12 temperature sensors to the FRU or shelf location on the DS424x shelf.
    • How to remove a shelf from ONTAP
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_remove_a_shelf_from_ONTAP
      Applies to ONTAP 9 Disk shelves DS212C DS224X DS424X DS4486 DS460C Description Before removing a shelf the data needs to be evacuated and ownership and partitioning removed.
    • Power error on DS4243: ses.psu.powerReqError:CRITICAL
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Power_error_on_DS4243__ses_psu_powerReqError_CRITICAL
      Applies to Data ONTAP 8 ONTAP 9 DS4243 disk shelf DS4246 disk shelf Issue The following power error is reported on the PSU: ses.psu.powerReqError:CRITICAL]: Not enough power supplies are present in ch...Applies to Data ONTAP 8 ONTAP 9 DS4243 disk shelf DS4246 disk shelf Issue The following power error is reported on the PSU: ses.psu.powerReqError:CRITICAL]: Not enough power supplies are present in channel ## disk shelf # to satisfy disk drive and shelf power requirements. ses.psu.coolingReqError:CRITICAL]: Improper power supply placement in channel ## disk shelf #. Power supplies must be installed in proper numbers and locations to satisfy disk drive power and disk shelf air-flow requirements.
    • IOM upgrade requires a cold swap
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/IOM_upgrade_requires_a_cold_swap
      This article describes the steps required for a cold-swap upgrade. When replacing the IOM module in a shelf with a different model it requires the following components to be powered off during the cha...This article describes the steps required for a cold-swap upgrade. When replacing the IOM module in a shelf with a different model it requires the following components to be powered off during the change: ALL nodes that connect to the impacted shelves. ALL ATTO bridges (if applicable) that connect to the impacted shelves. The shelves of which the IOM model will be changed. IOM3 to IOM6 IOM3 to IOM12* IOM6 to IOM12* *Be aware of SAS port differences between IOM3/IOM6 (QSFP) and IOM12 (MiniSAS-HD)