Which statement correctly describes non-disruptive upgrades in ONTAP?

• A. Disruptive upgrades update components without taking the entire system offline.
• B. Non-disruptive upgrades update components without taking the entire system offline.
• C. Non-disruptive upgrades require downtime.
• D. Disruptive upgrades update only firmware.

Answer: (B)

Non-disruptive upgrades in ONTAP are designed so you can update the software across the cluster without taking the entire system offline. In a clustered ONTAP environment, you perform a rolling upgrade, upgrading one node at a time while the other nodes continue to handle I/O. This keeps client access available and minimizes downtime. That’s why this statement is the best fit: upgrades happen without taking the whole system offline.

The other ideas don’t fit because disruptive upgrades are the ones that typically require downtime, not the ones that keep the system online; non-disruptive upgrades do not require downtime for the whole system; and upgrades aren’t limited to firmware only—software (and firmware when included) is updated as part of the process.