As I’ve been slowly adding components to my NUC lab it’s become painfully clear that the single gigabit interface on each of my nics leads to problems. This is exasperated by running hybrid vSan as the shared storage system and it can be a bit of bandwidth hog.
So I needed a way to limit vSAN so as to not gobble up all the bandwidth on my servers and cause downtime. I accomplished this using the network resource pools within vSphere. Specifically I guaranteed a reservation for virtual machine, management and vMotion traffic as well as vSAN. The key however was to set a limit on the bandwidth vSAN could use, thus limiting any resync’s or vMotions due to maintenance mode from flooding my single interface and causing downtime.