Your Browser is Out of Date

Nytro.ai uses technology that works best in other browsers.
For a full experience use one of the browsers below
Planning Guide—vSAN 2-Node Cluster on VxRail
Executive summary Introduction Requirements, recommendations, and restrictions Deployment options
Centralized management (option 1)
Centralized management, localized witness (option 2)
Localized management and witness (option 3)
Conclusion References

Localized management and witness (option 3)

Localized management and witness (option 3)

  • In this option, the three fault domains are at the same location; the VCenter Server, vSAN witness appliance, and the VxRail nodes. An additional ESXi host is required to host the vSAN witness appliance and customer-managed VCenter Server. The vSAN witness appliance and customer-managed VCenter cannot be hosted in the VxRail vSAN 2-node cluster.

    Figure 9.   Localized VCenter and witness appliance

    The following table summarizes the benefits and drawbacks of each of the deployment options:

    Table 3.      Deployment options considerations

    Option

    Pros

    Cons

    1—Centralized management and witness
    • A single UI for the management of multiple 2-node clusters
    • Reduced licensing and hardware costs through centralization of witness appliances

    Network costs for VCenter and witness communications

    2—Centralized management, localized witness

    A single UI for the management of multiple 2-node clusters
    • Network costs for VCenter communications
    • Software and hardware costs for deployment of witness appliances

    3—Localized management and witness

    Reduced network cost associated with normal operations and witness contingency
    • Software and hardware costs for deployment of multiple VCenter Servers and witness appliances
    • Large network bandwidth requirement for maintenance and troubleshooting