Networking Requirements for Virtual SAN

Verify that the network infrastructure and the networking configuration on the ESXi hosts meet the minimum networking requirements for Virtual SAN.

Table 1. Networking Requirements for Virtual SAN

Networking Component	Requirement
Host Bandwidth	Each host must have minimum bandwidth dedicated to Virtual SAN. Dedicated 1 Gbps for hybrid configurations Dedicated or shared 10 Gbps for all-flash configurations For information about networking considerations in Virtual SAN, see Designing the Virtual SAN Network.
Connection between hosts	Each host in the Virtual SAN cluster, regardless of whether it contributes capacity, must have a VMkernel network adapter for Virtual SAN traffic. See Set Up a VMkernel Network for Virtual SAN.
Host network	All hosts in your Virtual SAN cluster must be connected to a Virtual SAN Layer 2 or Layer 3 network.
Multicast	Multicast must be enabled on the physical switches and routers that handle Virtual SAN traffic along the Layer 2 path and (optionally) the Layer 3 path.
IPv4 and IPv6 support	The Virtual SAN network supports both IPv4 and IPv6.
Network latency	Maximum of 1 ms RTT for standard (non-stretched) Virtual SAN clusters between all hosts in the cluster Maximum of 5 ms RTT between the two main sites for stretched clusters Maximum of 200 ms RTT from a main site to the Virtual SAN witness host