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What is a likely reason for a cluster expansion failure when integrating a new Nutanix G7 system with a G5 cluster?

  1. G7 hardware cannot be integrated into a G5 cluster

  2. AOS version on the new system is older than that of the cluster

  3. EVC configuration needs to be completed before expansion

  4. Foundation software needs updating on the cluster

The correct answer is: AOS version on the new system is older than that of the cluster

Expanding a Nutanix cluster by integrating a new system requires compatibility in terms of hardware and software. In this scenario, option B correctly points to a common issue that can lead to a cluster expansion failure: having an AOS (Acropolis Operating System) version on the new system that is older than that of the existing cluster. For a successful cluster expansion, all nodes in the cluster must operate on the same or compatible versions of AOS. If the new G7 system runs an older version than the G5 cluster, compatibility issues arise that prevent seamless integration. Newer versions of AOS come with enhancements, resolved bugs, and new features that ensure optimal operation and support for the system's hardware. Therefore, introducing a node with an outdated version can disrupt the uniformity required for the cluster to function effectively, leading to expansion failure. This scenario underlines the importance of ensuring that all nodes are running compatible software versions before attempting to expand a Nutanix cluster.