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videoai-3179 asked TeemoTang-MSFT answered

Troubleshooting slow write speeds on Windows2012R2 NFS Share.

I'm trying to troubleshoot slow write speeds on an NFS Share hosted on a Windows2012R2 Standard

Server:
Windows Server 2012 R2 Standard 6.3.9600
Using Services for NFS (v3)

Client:
OSX Mojave
Mount Options:

 /mount/path -fstype=nfs,intr,noresvport,nolocks,locallocks,soft,vers=3,rsize=1048576,wsize=1048576,rdirplus,async nfs://svr/share

  • We use AD for authentication on both the server and the client.

  • The NFS share uses Kerberos v5 for auth (krb5)

  • NFS permission is set to ALL MACHINES (read/write)

  • There doesn't seem to be any errors in the Event Viewer.

Read speeds are decent from the NFS server share. (250Mbps)
Write speeds are significantly slower (50Mbps)

Both are poor compared to the same folder shared via SMB (550Mbps both directions)






windows-server-2012
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1 Answer

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TeemoTang-MSFT answered

Please check this similar case for some ideas
Slow Performance - NFS on Windows and CIFS/SMB on Linux
https://www.truenas.com/community/threads/slow-performance-nfs-on-windows-and-cifs-smb-on-linux.50686/


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