A vSAN administrator is building a new vSAN cluster and each host only has two physical uplinks configured in a team. What can the administrator use to ensure vSAN receives the necessary bandwidth while maintaining high availability?
D is right.
vSAN traffic can share 10 GbE physical network adapters with other system traffic types, such as vSphere vMotion traffic, vSphere HA traffic, and VM traffic. To guarantee the amount of bandwidth required for vSAN, use Network I/O Control in vSphere Distributed Switch.
Using Network I/O Control, you can configure reservations and shares for the vSAN outgoing traffic.
Set a reservation so that Network I/O Control guarantees that minimum bandwidth is available on the physical adapter for vSAN.
Set shares so that when the physical adapter assigned for vSAN becomes saturated, specific bandwidth is available to vSAN and to prevent vSAN from consuming the entire capacity of the physical adapter during rebuild and synchronization operations. For example, the physical adapter might become saturated when another physical adapter in the team fails, and all traffic in the port group is transferred to the other adapters in the team.
Taken from vSAN 6.7 Deploy and Manage Lecture Manual - Network I/O Control Section
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