It most scenarios you will not see performance improvement between SMB 2.0 and 3.1, unless you are using:
- SMB Scale-Out
- SMB Direct (SMB 3.0 over RDMA)
- SMB Multichannel
- Directory Leasing
- BranchCache V2
So I guess you may try thinking about testing Multichannel, but it has quite specific requirements:
http://technet.microsoft.com/en-us/library/dn610980.aspx
Regards,
Radek