In Cloud Volumes ONTAP High Availability (HA) for AWS, which feature allows for non-disruptive operations and fault tolerance using multiple availability zones?

The correct choice of floating IP addresses in the context of Cloud Volumes ONTAP High Availability (HA) for AWS is significant because it enables seamless failover and non-disruptive operations across multiple availability zones. In a high availability configuration, floating IP addresses can swiftly redirect traffic to the surviving node in the event of a failure. This mechanism ensures that clients continue to access data with minimal disruption, as the IP address remains consistent even if the underlying node changes.

This IP management is crucial for fault tolerance, as it allows for continuous data availability, enabling applications to operate smoothly without being affected by hardware failures or maintenance activities. By leveraging floating IP addresses, administrators can effectively maintain service functionality, ensuring that users experience no visible interruption when one node in the HA configuration goes down or is taken offline for maintenance.

In contrast, the other options do not specifically relate to maintaining IP address continuity in HA configurations. Load balancing and proxy servers are more focused on distributing traffic and managing network requests rather than ensuring fault tolerance at the level of data storage access. Elastic IP addresses, while useful for certain network configurations in AWS, do not inherently provide the same level of non-disruptive operations as floating IP addresses in a high availability setup.