When does auto-extend trigger expansion of a volume?

• A. Space usage nears a threshold and there is free space on the underlying aggregate.
• B. Only during scheduled maintenance.
• C. When a volume is copied to a new node.
• D. When data dedup is enabled.

Answer: (A)

Auto-extend expands a volume automatically when its space usage crosses the configured threshold and there is free space available on the underlying aggregate. This keeps writes flowing by growing the volume in defined increments whenever the volume is nearing full, as long as the aggregate has unused space. If there isn’t any free space on the aggregate, the volume won’t extend even if the threshold is reached. Other scenarios like maintenance, moving a volume to another node, or deduplication status do not trigger expansion by themselves.