VxRail Version

No mixed clusters are supported (that is, VxRail 4.7 and 7.0 in the same cluster).

vSphere License

vSphere Standard Edition is supported, but vSphere Enterprise Plus license is required if using DRS.

You cannot reuse the VxRail vCenter Server license on any other deployments.

Number of Nodes

The minimum supported configuration is 1+1+1(2 nodes+1 witness).

The maximum supported configuration is 15+15+1 (30 nodes+1 witness).

customer-supplied vCenter Server

(Recommended choice)

The customer-supplied vCenter Server version must be in the VxRail and external vCenter interoperability matrix.

Fault Domains

Must have 3 Fault Domains (preferred, secondary, and witness host).

Network Topology

vSAN traffic between the data sites can be Layer 2 or Layer 3.

vSAN traffic between the witness host and the data sites should be Layer 3.

Witness Traffic Separation allowed users to use an alternative VMkernel interface for traffic to the Witness other than the vSAN interface.

Data Site to Data Site Network Latency

Latency or RTT between data sites should not be greater than 5 msec. (<2.5 msec one-way)

Data Site to Data Site Bandwidth

A minimum of 10 Gbps is required.

Data Site to Witness Network Latency

For configurations up to 10+10+1, latency or RTT less than or equal to 200 msec is acceptable.

For configuration greater than 10+10+1, latency or RTT less than or equal to 100 msec is required.

Data Site to Witness Network Bandwidth

The guideline is 2 Mbps for every 1000 objects on vSAN.

Intersite MTU consistency

Required to be consistent between data sites.

MTU to the Witness can be different.

Network Ports

Review Appendix B for required port connectivity.