Nutanix SE Academy NCSE-Core Question # 31 Topic 4 Discussion

A prospect is looking for a Nutanix solution for a mission-critical application that needs to sustain two simultaneous node outages and prefers the cluster to fully rebuild both data and metadata in the event of hardware issues. Here is the detailed explanation:

Requirement Analysis:

Sustain two simultaneous node outages.

Fully rebuild both data and metadata after hardware issues.

Feature Analysis:

Nutanix clusters use Replication Factor (RF) to ensure data protection and availability. For RF3 (Replication Factor 3), which protects against two simultaneous node failures, a minimum of 5 nodes is required.

To fully rebuild both data and metadata after failures, the system needs an additional node to ensure there is enough redundancy and performance.

Conclusion:To achieve RF3 and sustain two simultaneous node failures while allowing full rebuild of data and metadata, a minimum of 6 nodes is required.

References:

Nutanix documentation on cluster resiliency and RF configurations​