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    • SCMM 2019 Hyper-V 2016 no ODX is used when deploying VMs from the VMM, only BITS
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/SCMM_2019_Hyper_V_2016_no_ODX_is_used_when_deploying_VMs_from_the_VMM_only_BITS
      Applies to ONTAP 9.0 Microsoft Hyper-V Microsoft SCMM / VMM Issue Extremely slow when deploying virtual machine using Microsoft System Center Configuration Manager (SCMM) from virtual machine manager ...Applies to ONTAP 9.0 Microsoft Hyper-V Microsoft SCMM / VMM Issue Extremely slow when deploying virtual machine using Microsoft System Center Configuration Manager (SCMM) from virtual machine manager (VMM) The copy jobs from the SCVMM libraries are done using Background Intelligent Transfer Service ( BITS )
    • Slowness on FC LUNs on new ONTAP Cluster
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Slowness_on_FC_LUNs_on_new_ONTAP_Cluster
      Applies to ONTAP 9 Upgrade to new AFF Cluster FC LUNs Issue Migration from an old AFF to new AFF, such as an AFF-8080 to AFF-A400 seems to show worse performance 1 GB/s is expected such as on AFF-8080...Applies to ONTAP 9 Upgrade to new AFF Cluster FC LUNs Issue Migration from an old AFF to new AFF, such as an AFF-8080 to AFF-A400 seems to show worse performance 1 GB/s is expected such as on AFF-8080, but performance may only be 300-700 MB/s High latency is seen if using indirect i/o (using a LIF on node 1, but the volume resides on node 2's disks) SnapMirror testing (used as a baseline) of performance between one node and another only does 300 MB/s of throughput
    • token.vol.is.compressed EMS event during copy offload attempt in ONTAP
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/token.vol.is.compressed_EMS_event_during_copy_offload_attempt_in_ONTAP
      Applies to ONTAP 9 Issue The following notice appears in the EMS event log: [cluster1: token_mgr_admin: token.vol.is.compressed:notice]: A 'token create' request in volume vol1 failed because the volu...Applies to ONTAP 9 Issue The following notice appears in the EMS event log: [cluster1: token_mgr_admin: token.vol.is.compressed:notice]: A 'token create' request in volume vol1 failed because the volume is compressed.
    • _ocs_vserver workload can cause high Node utilization/latency
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/ocs_vserver_workload_can_cause_high_Node_utilization_latency
      Applies to ONTAP 9 Issue Filer can see high Node utilization when _ocs_vserver workload is running. This workload can induce high CPU and Disk utilization causing CPU/Disk saturation. This can have a ...Applies to ONTAP 9 Issue Filer can see high Node utilization when _ocs_vserver workload is running. This workload can induce high CPU and Disk utilization causing CPU/Disk saturation. This can have a negative impact on other user workload as they would starve for resources. Alarm IO wait time is reported from the vCenter.
    • What is a PIT file in Data ONTAP?
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/What_is_a_PIT_file_in_Data_ONTAP
      A Point-In-Time (PIT) file is a special file used for ODX or Copy Offload procedures. Copy Offload is the process of sending only control data from the client to ONTAP while copying from one folder to...A Point-In-Time (PIT) file is a special file used for ODX or Copy Offload procedures. Copy Offload is the process of sending only control data from the client to ONTAP while copying from one folder to another on the same storage node. The contents of the file are transferred internally in ONTAP and the client requests the blocks to be transferred. The PIT file is the container which ONTAP uses to copy the blocks internally from one folder to another
    • Poor performance  (low throughput) with iSCSI during intravolume copy offload
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/Poor_performance_low_throughput_with_iSCSI_during_intravolume_copy_offload
      Applies to ONTAP 9 iSCSI Copy Offload Issue Low throughput detected in iSCSI LUN during intravolume copy offload Latency is detected in iSCSI "other" operations
    • iOS Files app does not list content of CIFS shares
      https://kb.netapp.com/on-prem/ontap/da/NAS/NAS-KBs/iOS_Files_app_does_not_list_content_of_CIFS_shares
      Applies to ONTAP 9.8 and later CIFS/SMB Apple iOS 15 native files app Issue iOS Files app does not list content of CIFS shares: The initial connection is using the Apple iOS "Files" app is successful....Applies to ONTAP 9.8 and later CIFS/SMB Apple iOS 15 native files app Issue iOS Files app does not list content of CIFS shares: The initial connection is using the Apple iOS "Files" app is successful. When connecting to the root "/" of the storage system, e.g. "cifs://storage.domain.com/" all available volumes are listed. When selecting a CIFS share/volume no files or folders are shown.
    • ODX copy-offload is slower than host based copy for files with more extents
      https://kb.netapp.com/on-prem/ontap/Perf/Perf-KBs/ODX_copy-offload_is_slower_than_host_based_copy_for_files_with_more_extents
      Applies to ONTAP 9.5 to 9.8 ISCSI Offloaded Data Transfer (ODX) Issue Low throughput detected while copying files with multiple extents with ODX copy offload enabled. Client based copy is faster than ...Applies to ONTAP 9.5 to 9.8 ISCSI Offloaded Data Transfer (ODX) Issue Low throughput detected while copying files with multiple extents with ODX copy offload enabled. Client based copy is faster than ODX copy offload for files with multiple extents.