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    • https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Performance_Impact_due_to_FCP_Queue_Depth_Threshold_Reached
      A production outage may occur in the form of extremely high latency similar to performance issue NMP: nmp_ThrottleLogForDevice:2349: Cmd 0x1a(0x413680446300, 0) to dev "mpx.vmhba32:C0:T0:L0" on path "...A production outage may occur in the form of extremely high latency similar to performance issue NMP: nmp_ThrottleLogForDevice:2349: Cmd 0x1a(0x413680446300, 0) to dev "mpx.vmhba32:C0:T0:L0" on path "vmhba32:C0:T0:L0" Failed: H:0x0D:0x28 P:0x0 Valid sense data: 0x0 0x0 0x0. NMP: nmp_ThrottleLogForDevice:2349: Cmd 0x88(0x412e80451080, 36817) to dev "naa.600a123" on path"vmhba1:C0:T1:L34" Failed: H:0x0 D:0x8 P:0x0 Possible sense data: 0x0 0x0 0x0.
    • https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/nblade.cvo.remote.access
      NFS nConnect or SMB3 Multichannel can achieve this with multiple TCP streams It is recommened to test SMB3 multichannel on a test vserver prior to enabling it on a production vserver and limit possibl...NFS nConnect or SMB3 Multichannel can achieve this with multiple TCP streams It is recommened to test SMB3 multichannel on a test vserver prior to enabling it on a production vserver and limit possible impacts due to misconfiguration on clients Multithreading can be increased with multi-threaded copy tools such as NetApp XCP, robocopy/rich copy in windows, rsync in linux. More information on concurrency can be found here More information on basic performance concepts can be found here
    • https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/E-Series_high_latency_and_low_throughput_using_SLES_sgp_dd_command
      Applies to E2800 SANtricity System Manager 11.60R2 Suse Linux Enterprise Server (SLES) 12 SP4 Issue The array shows very different read/write performance High latency (up to 200 ms) observed during sg...Applies to E2800 SANtricity System Manager 11.60R2 Suse Linux Enterprise Server (SLES) 12 SP4 Issue The array shows very different read/write performance High latency (up to 200 ms) observed during sgp_dd copy using multiple threads