There is no other traffic.
There is one other node in the chassis and it was running Azure Stack TP3, but the performance was so terrible that I tore it down. This may be a lab but I do put it through the ringer. I run reverse proxies, multiple IIS sites, Active Directory, SQL Clustering, etc...
the M620s are 2x2660's with 64GB so I am not memory paging as I am under 30% allocated.