VSAN configuration : How many VMK should be created to connect VSAN network ?

[ASPfduprez]

Hello,

I would like to check te actual configuration of our VSAN, and for the moment the previous engineer has configured 2 VMK per host on the VSAN network.

Today I add a new host into the cluster but I got a ping issue between this new host and the master HA host.

S I wondering if it's not better to configure only 1 vmk per host for vsan network

Thank you for your advies

[TheBobkin]

Hello ASPfduprez

Welcome to Communities.

While it is supported to configure multiple vmk for vSAN, it is not recommended, more info on why here:

VMware Knowledge Base

Furthermore, judging by the naming convention, it looks to be set up wrong (e.g. both vmk in same subnet).

Bob

[sarikrizvi]

One vMKernel adapter is fine for vSAN.

If you have ping issue then check MTU size on "Physical Layer/DvSwitch/VMkernel Adapter", it should be same on all places, re-validate that and give a try.