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    • ESX Hosts losing access to LUNs regularly along with Aggregate reporting long CP's
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/ESX_Hosts_losing_access_to_LUNs_regularly_along_with_Aggregate_reporting_long_CP_s
      Applies to VMware critical alert for datastore path down Poor performance and alerts for SQL virtual machines Affected datastores: Path redundancy to storage device naa.xyz degraded. Path vmhba1:C0:T7...Applies to VMware critical alert for datastore path down Poor performance and alerts for SQL virtual machines Affected datastores: Path redundancy to storage device naa.xyz degraded. Path vmhba1:C0:T78:L10 is down. ONTAP reports long or back2back consistency points (CP) wafl_exempt00: wafl.cp.toolong:error]: Aggregate_xyz_sata_aggr1 experienced a long CP. I/O latency increased from average value of 8000 microseconds to 1000008 microseconds
    • High response times for volumes on SATA or SAS disks when workload increases (Performance Capacity beyond critical threshold)
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/High_response_times_for_volumes_on_SATA_or_SAS_disks_when_workload_increases_Performance_Capacity_beyond_critical_threshold
      The article cover what causes high response times for volumes on SATA or SAS disks when workload increases and what you need to do to reduce, stagger, or monitor workloads causing high disk latency an...The article cover what causes high response times for volumes on SATA or SAS disks when workload increases and what you need to do to reduce, stagger, or monitor workloads causing high disk latency and utilization.