You can use UDP or TCP and you can use Vers 2 or 3. You are going to find most of the performance affecting tuning is done via the NFS client options. Use smaller Rsize and Wsize (ie wsize=2048,rsize=2048) and try increasing your client UDP Buffer if you choose to use NFS over UDP. Also increase your NFS retries to between 3 and 5 and timeout to 10. Remember, over a possibly already fully WAN link... TCP does have slightly more overhead in total packet count transmitted ( provided UDP does not have too many retrans).
Have fun with the tuning... and keep track of performance ( copy time ) with all Rsize and Wsize between 512 and 32k . Try small files and larger files. Test on both a read from server and a write to server.
----- Original Message ----- From: Matthew Stier Matthew.Stier@fnc.fujitsu.com Date: Thursday, December 21, 2000 3:24 pm Subject: Using Network Appliance F7xx's in a WAN environment.
Any known filer tweaks to improve perfomance of NFS across a Wide Area Network?
-- Matthew Lee Stier * Fujitsu Network Communications Unix Systems Administrator | Two Blue Hill Plaza Ph: 914-731-2097 Fx: 914-731-2011 | Sixth Floor Matthew.Stier@fnc.fujitsu.com * Pearl River, NY 10965