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Why is file transfer speed from CIFS share slow over VPN or WAN?

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Votes:
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Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • SMB
  • Windows 11 24H2 (optional)

Answer

  • SMB3 directory leasing feature is not implemented on ONTAP.
  • For every file, the client opens every file path component separately that causes both high protocol overhead and high file system overhead

 

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