Solving SMB Performance Issues on macOS

macOS units were experiencing performance issues both authenticating and browsing Hitachi HNAS appliances navigating through any DFS namespace.  This lead to the following issues:

  • Long delays mounting shares, browsing folders, and opening files (15s for auth dialog to appear, 15s to connect). 
  • Slow file searches
  • File corruption
  • Disappearing files
  • Crashing applications
  • Permissions problems
  • Locked files and file naming issues
  • Failed downloads when using Google Chrome to save gmail attachments directly to server
  • Microsoft Office intermittently fails to save documents opened from the server

This was solved by disabling the SMB packet signing.

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