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NetApp Stage KB

Global File Cache: Why are users reporting slowness after changing DFS path from pointing to Backend File server to GFC Edge

Last Updated:

Applies to

  • Global FIle Cache (GFC)
  • Edge
  • Backend File Server
  • DFS


  • Typically users are not aware of the path that their mapped drives are actually taking them. If the DFS path was pointing directly to the backend file server, then changed to point to a GFC Edge, those files worked on/created on the backend file server would be shown cold on the Edge.
  • The first open of the file will "fetch" the entire file and warm it up on the edge. The second open would be faster as the data already exists now on the edge. 
  • There is a constant overhead while working through GFC. Every file open will induce a check to see that the most up to date data is on the edge. 
  • The behavior reported is normal and to be expected. 
  • Expectations need to be set with the end users as an asynchronous cache can not be compared to a local file server.

Additional Information



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