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
VxRail hardware
VDS support
VxRail software version
Nested fault domains
vSAN file services
VCenter Server
Witness virtual appliance
Physical network
Port requirements
Witness and management network topology
Network layout
Capacity planning considerations
Node upgrades
Licensing
Other support limitations
Deployment options Conclusion References

Nested fault domains

Nested fault domains

  • Beginning with VxRail 7.0.300, the VxRail 2-node cluster supports nested fault domains, where each host or a group of hosts can redundantly store VM object replicas. In a 2-node cluster configuration, fault domains can be created on a per-disk-group level, enabling disk-group-based data replication. Thus, each of the two data nodes can host multiple object replicas. With this secondary level of resilience, the 2-node cluster can ensure data availability if more than one device fails. For instance, one host failure and an additional device or disk group failure will not impact the data availability of the VMs that have a nested fault domain policy applied. A minimum of three disk groups per host are required to serve the nested level of fault tolerance.