High Availabity for vMotion Across Two NIC's

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When designing your vCentre environment, good practice is to associate two physical network adapters (uplinks) to your vMotion network for redundancy.

The question is does VMware use both uplinks in aggregation to give you 2GBps throughput in an Active/Active configuration? the answer to this is no.

In the above configuration we have two uplinks both Active, using the load balancing policy 'route based on originating virtual port ID' this means that the VMkernel will use one of the two uplinks for vMotion traffic. The secondary active adapter will be used but only if the uplink vmnic4 is no longer available.

You might say this is OK, I'm happy with this configuration, I say how can we make it more efficient?

Read more here