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    • MetroCluster FC to IP transition - Option 9c Failing
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/MetroCluster_FC_to_IP_transition_-_Option_9c_Failing
      Applies to MetroCluster Transition from 2-node FC to 4-node IP Option 9c failing Issue During the procedure to transition a 2-node MetroCluster FC to a 4-node MetroCluster IP, the step to run option 9...Applies to MetroCluster Transition from 2-node FC to 4-node IP Option 9c failing Issue During the procedure to transition a 2-node MetroCluster FC to a 4-node MetroCluster IP, the step to run option 9c after connecting the new IP controllers to the existing shelves fails.
    • How to identify a failed disk prior to replacement
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_identify_a_failed_disk_prior_to_replacement
      Identify a defective, failed disk and the slot in which a faulty disk resides before replacement.
    • AutoSupport Message: DISK/SHELF COUNT MISMATCH
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/AutoSupport_Message__DISK_SHELF_COUNT_MISMATCH
      CLERDK:Cluster Notification from Filer1 (CLUSTER ERROR: DISK/SHELF COUNT MISMATCH) ERROR Error message: cfdisk: shelf count mismatch detected: local 3, partner 4 With a disk show –n, the disk is not s...CLERDK:Cluster Notification from Filer1 (CLUSTER ERROR: DISK/SHELF COUNT MISMATCH) ERROR Error message: cfdisk: shelf count mismatch detected: local 3, partner 4 With a disk show –n, the disk is not seen on the owning node. Also, the disk is seen unassigned on the partner node. Note: When adding new disks to a storage system, the disks are assigned to the partner node. Disk assignment fails with the following error: disk assign: Disk 1a.16.23 not accessible.
    • Uncorrectable memory error on an AFF or FAS system with PPR
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Uncorrectable_memory_error_on_AFF_FAS_system_with_Post_Package_Repair
      Check the results of a Post Package Repair (PPR) test, determine actions needed.