Which of the following constitutes a basic health check of an ONTAP cluster?

• A. Check node status, disk health, network connectivity, and system logs using System Manager or CLI commands like system health or cluster show.
• B. Check only CPU usage.
• C. Check only power supplies.
• D. Check only event logs.

Answer: (A)

A basic health check for an ONTAP cluster involves verifying multiple aspects of the system to ensure everything is functioning together. This means confirming node status (all nodes online and healthy), disk health (no degraded or failed drives), network connectivity (inter-node and client paths are reachable), and system logs (recent warnings or errors that could indicate issues). You can perform this check using NetApp System Manager or the CLI, with commands like system health to view hardware/software health and cluster show to verify cluster status and inter-node connectivity. Relying on a single metric—such as CPU usage, power supplies, or event logs alone—misses other critical health indicators: CPU usage shows load but not hardware health; power supplies alone don’t reveal disk or network problems; event logs are useful but don’t confirm overall cluster health. So a comprehensive check across nodes, disks, network connectivity, and logs is the best approach to assess ONTAP cluster health.