VxRail Version |
- The minimum version is VxRail 3.5.
- No mixed clusters are supported (that is, VxRail 4.5 and 4.0 in the same cluster).
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vSphere License |
- vSphere Enterprise Plus license is required.
- You cannot reuse the VxRail vCenter Server license on any other deployments.
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Number of Nodes |
- Review Table 1 in this guide for the minimum number of nodes.
- The minimum supported configuration is 1+1+1.
- The maximum supported configuration is 15+15+1 (30 nodes+1 witness).
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Customer-supplied vCenter Server (Recommended choice) |
- Required for versions earlier than VxRail 4.5.200.
- The customer-supplied vCenter Server version must be in the VxRail and external vCenter interoperability matrix.
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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. Ensure that the Witness site in L2 enclosures is using high bandwidth and low latency.
- vSAN traffic between the witness host and the data sites must be Layer 3.
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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, but 100 msec is preferred.
- For configuration greater than 10+10+1, latency or RTT less than or equal to 100 msec is required.
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Data Site to Witness Network Bandwidth |
The rule of thumb is 2 Mbps for every 1000 objects on vSAN. |
Inter-site MTU consistency |
Required to be consistent between data sites. |
Network Ports |
Review Appendix B for required port connectivity. |