I was wondering what the CIFS overhead for a NetApp filer would be. 

Let’s say for instance a Windows Server to Windows Server transfer on the same switch, same subnet, GIG copper interconnects, no TOE card, etc gets me up to about 50% utilization (500Mbps). 

Should that same server to a Netapp Filer see a 20-30% degradation in TX/RX speeds because of CIFS overhead?

What should I expect for data rates in this type of scenario?  Are there any tweaks anyone knows of to decrease this gap?

(same results using static link aggregation, and LACP for the VIF)

Thanks

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