1gig and 10gig interfaces at the same time

[RVil]

Hi,

How do NWT and the array prioritize network interfaces, when there is both 1 gigabit and 10 gigabit mpio routes to and from the array?

[NimbleMike · Accepted solution]

NWT sets the MPIO load balancing policy for NimbleDSM to Least Queue Depth (LQD).  NimbleDSM will use whichever data path has the least number of outstanding requests.  If you have one path at 1 gig, and the other at 10 gig, then the 10 gig path will get more of the traffic since it will be processing requests more quickly.  Note that I wouldn't expect the 10 gig interface to get 10x the load of the 1 gig interface because, whichever interface is used, the target latency is the same (excluding transmission times).