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    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Disk_X316_HARIH06TA07_failing_impacts_system_performance
      [node01: disk_latency_monitor: shm.threshold.ioLatency:debug]: Disk 9a.02.4 has exceeded the expected IO latency in the current window with average latency of 72 msecs and average utilization of 85 pe...[node01: disk_latency_monitor: shm.threshold.ioLatency:debug]: Disk 9a.02.4 has exceeded the expected IO latency in the current window with average latency of 72 msecs and average utilization of 85 percent. [node01: disk_latency_monitor: shm.threshold.ioLatency:debug]: Disk 9a.02.4 has exceeded the expected IO latency in the current window with average latency of 120 msecs and average utilization of 92 percent.
    • https://kb.netapp.com/Legacy/ONTAP/7Mode/What_happens_when_a_disk_fails_and_does_not_have_a_hot_spare_installed
      Sat Oct 29 13:26:42 PDT [statd]: When a disk is broken, the system shuts down automatically every 24 hours to encourage you to replace the disk.If you reboot the system it will run for another 24 hour...Sat Oct 29 13:26:42 PDT [statd]: When a disk is broken, the system shuts down automatically every 24 hours to encourage you to replace the disk.If you reboot the system it will run for another 24 hours before shutting down. You can restart the storage system without fixing the disk, but the storage system will continue to shut itself off at the specified intervals until the issue is fixed.
    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Why_do_disks_fail_with_the_error_raid_label_does_not_match
      When Data ONTAP needs to update the labels (for instance, upon adding a disk to an aggregate or when changing the state of an aggregate), it will write every label 1 out to participating disks in the ...When Data ONTAP needs to update the labels (for instance, upon adding a disk to an aggregate or when changing the state of an aggregate), it will write every label 1 out to participating disks in the aggregate, read every label back, and if the results match Data ONTAP will then do the same for label 2. The error means that the storage layer claimed to read and write to the disk without any problems, however the label that ONTAP read back does not match the label it wrote.