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    • Why does throughput not exceed ~125 MBps on a 1 Gbps port?
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/Why_does_throughput_not_exceed_125_MBps_on_a_1_Gbps_port
      Applies to ONTAP 9 Clustered Data ONTAP ONTAP 7-mode Answer One Giga Bits Per Second (Gbps) port is limited to 125 Mega Bytes Per Second (MBps) throughput Additional Information What is the theoretica...Applies to ONTAP 9 Clustered Data ONTAP ONTAP 7-mode Answer One Giga Bits Per Second (Gbps) port is limited to 125 Mega Bytes Per Second (MBps) throughput Additional Information What is the theoretical maximum throughput of a Gigabit Ethernet interface?
    • Slow VMware vMotions on NFS due to VMKernel Interfaces not having vMotion configured
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Slow_VMware_vMotions_on_NFS_due_to_VMKernel_Interfaces_not_having_vMotion_configured
      Applies to ONTAP 9 VMware ESXi Issue Slow vMotions when migrating from one datastore to another, or possibly from one storage system to another
    • Slow VMware vMotions on ONTAP 9
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Slow_VMware_vMotions_on_ONTAP_9
      Applies to ONTAP 9 VMware ESXi Issue Slowness is seen with VMware vMotions
    • Snapmirror transfer speeds slower than expected
      https://kb.netapp.com/on-prem/ontap/DP/SnapMirror/SnapMirror-KBs/Snapmirror_transfer_speeds_slower_than_expected
      Applies to ONTAP 9 Data ONTAP 8 Data ONTAP 7-Mode SnapMirror Issue SnapMirror throughput not saturating WAN line Low throughput observed after WAN line upgraded SnapMirror throughput not meeting expec...Applies to ONTAP 9 Data ONTAP 8 Data ONTAP 7-Mode SnapMirror Issue SnapMirror throughput not saturating WAN line Low throughput observed after WAN line upgraded SnapMirror throughput not meeting expectations
    • Slow NFS read throughput with Oracle 12 db
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Slow_NFS_read_throughput_with_Oracle_12_db
      Applies to ONTAP 9 Oracle 12 Issue Slow NFS reads to Oracle 12 db from Linux
    • Slow VMware vMotions on NFS due to Spanning Tree issues
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Slow_VMware_vMotions_on_NFS_due_to_Spanning_Tree_issues
      Applies to ONTAP 9 Data ONTAP 7-Mode Issue Slow vMotions when migrating from one datastore to another, or possibly from one storage system to another
    • Low read throughput when using iozone
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Low_read_throughput_when_using_iozone
      Applies to ONTAP 9 Compaction enabled Inline Deduplication disabled iozone Issue Low read throughput when using iozone with Compaction enabled and Inline Deduplication disabled
    • nblade.cvo.remote.access
      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
    • Are performance metrics on System Manager DASHBOARD average?
      https://kb.netapp.com/on-prem/ontap/DM/System_Manager/SM-KBs/Are_performance_metrics_on_System_Manager_DASHBOARD_average
      Applies to ONTAP System Manager 9.8 or later Answer Yes, performance metrics are average values over time for the interval. Additional Information For System Manager Classic version, Dashboard window ...Applies to ONTAP System Manager 9.8 or later Answer Yes, performance metrics are average values over time for the interval. Additional Information For System Manager Classic version, Dashboard window for System Manager - ONTAP 9.7 and earlier states that performance metrics are average values. What API is used for display performance graph of System Manager's Dashboard?
    • Slow NDMP Backup Speed in Phase 3
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Slow_NDMP_Backup_Speed_in_Phase_3
      Applies to NDMP Ontap Issue NDMP backups are slow in phase 3 for backups.
    • How to benchmark performance on an Element cluster with fio
      https://kb.netapp.com/on-prem/solidfire/Element_OS_Kbs/How_to_benchmark_performance_on_an_Element_cluster_with_fio
      Applies to NetApp Element software NetApp SolidFire storage nodes NetApp HCI storage nodes Description This article explains how to run performance tests on Element clusters with fio. There are many a...Applies to NetApp Element software NetApp SolidFire storage nodes NetApp HCI storage nodes Description This article explains how to run performance tests on Element clusters with fio. There are many alternative tools available but not all allow running the benchmark against multiple volumes. This is required for creating a realistic workload on multi tenant storage.