Which of the following is a reason to enable high availability?

• A. Nondisruptive operation
• B. Increased energy consumption
• C. Reduced fault tolerance
• D. Longer maintenance windows

Answer: (A)

High availability is about keeping services accessible with minimal downtime by using redundant components and automatic failover. The reason to enable it is nondisruptive operation: when a component fails or needs maintenance, the system can continue serving clients without noticeable interruption. In NetApp environments, this is achieved with redundant controllers and components that can take over quickly, allowing I/O to continue while the failed part is isolated or replaced. This capability also supports smooth maintenance and upgrades without forcing outages.

The other options don’t fit the goal of HA: increasing energy consumption isn’t the aim; reducing fault tolerance would defeat the purpose of HA; and longer maintenance windows imply more downtime, which goes against nondisruptive operation.