Which is a recommended approach for rolling upgrades in ONTAP?

Which is a recommended approach for rolling upgrades in ONTAP?

• A. Plan Maintenance Windows and Perform Upgrades in a Rolling Fashion With Health Checks
• B. Upgrade All Nodes At Once During Peak Hours
• C. Skip Testing
• D. Reboot Cluster Without Checks

Answer: (A)

Rolling upgrades in ONTAP are best done by planning a maintenance window and upgrading nodes one by one, with health checks after each step. This approach keeps data I/O flowing while you progressively upgrade the cluster and lets you verify that every node and inter-node communication remains healthy before moving on. It minimizes risk by catching issues early and prevents a single problem from affecting the whole system. Upgrading all nodes at once during peak hours heightens risk: if something goes wrong, there’s a larger window of impact and less opportunity to isolate the issue. Skipping testing means you might miss incompatibilities or configuration problems that only appear after the upgrade. Rebooting the cluster without checks can lead to unexpected downtime or data access problems because you haven’t confirmed that each node is healthy and services are functioning after the upgrade.

Rolling upgrades in ONTAP are best done by planning a maintenance window and upgrading nodes one by one, with health checks after each step. This approach keeps data I/O flowing while you progressively upgrade the cluster and lets you verify that every node and inter-node communication remains healthy before moving on. It minimizes risk by catching issues early and prevents a single problem from affecting the whole system.

Upgrading all nodes at once during peak hours heightens risk: if something goes wrong, there’s a larger window of impact and less opportunity to isolate the issue. Skipping testing means you might miss incompatibilities or configuration problems that only appear after the upgrade. Rebooting the cluster without checks can lead to unexpected downtime or data access problems because you haven’t confirmed that each node is healthy and services are functioning after the upgrade.