Exam 3V0-21.21 topic 1 question 78 discussion

D. Two 10 GbE network adapters per server HCI-based infrastructure with all-flash architecture minimum number and type of network adapters so ensure requirements are met and there is no single point of failure Networking Requirements for vSAN Dedicated 1 Gbps for hybrid configurations Dedicated or shared 10 Gbps for all-flash configurations

For All-flash vSAN, 10Gbps network is necessary (so answer C or D). To avoid SPOF, we need 2 uplinks as a minimum --> Answer D is the right one

It' D - 2 NICs here are enough to share and 10Gbps for VSAN required

D, the question is "Minimum number"

I am going to have to go with C. The reasoning behind this is because the question says "all-flash". For a Hybrid VSAN configuration, you can include other traffic. However, for an all-flash VSAN config, it states a 10GbE+ connection as it may consume higher bandwidth for higher throughput. (See below) https://core.vmware.com/resource/vmware-vsan-design-guide#section4 In vSAN hybrid configurations, VMware supports 1Gb, 10Gb, 25Gb, 40Gb, and 100Gb Network Interface Cards (NICs) for vSAN network traffic. If a 1Gb NIC is used, VMware requires that this NIC is dedicated to vSAN traffic. If a 10Gb or higher bandwidth NICs are used, these can be shared with other network traffic types. While VMware has successfully run smaller hybrid vSAN deployments over 1Gb, the best practice is to use 10Gb links. vSAN all-flash configurations are only supported with a 10Gb or higher connections. One reason for this is that the improved performance with an all-flash configuration may consume more network bandwidth between the hosts to gain higher throughput.

D 2 nics are enouch to cover the load

Correct Answer : D

I agree with D. The two 10Gbps Adapters can be shared with vSAN and VM traffic, since the VM traffic peak is just 150Mbps.