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Low SMB small-file copy throughput to ONTAP FlexGroup volumes

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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

ONTAP 9

Issue

  • SMB file copy or move to an ONTAP FlexGroup volume shows lower throughput than expected
    • Data size: 194.3 GB
    • Files: 160,646
    • Folders: 17,830
    • Elapsed time: 1h 53m
    • Average throughput: approximately 28.7 MB/s
  • Throughput varies significantly according to workload composition
    • 23.7 GB / 6,281 files / 4m 44s / approximately 83.5 MB/s
    • 10.9 GB / 23,645 files / 12m 14s / approximately 14.9 MB/s
  • Lower throughput observed when the workload contains large numbers of small files and folders
  • Environment includes external FPolicy monitoring create and rename operations
  • SMB Multichannel disabled

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