This notification-only boolean indicates whether the reported failover was planned, meaning the Active node flushed all state to the Passive node and waited for completion before switching over with no data loss, versus unplanned, where failover happens immediately and may result in data loss. Admins use it to immediately assess data-integrity risk following a failover event without needing to investigate further. For example, vmwVchaIsPlannedFailover reading false after a failover trap prompts the admin to check for potential data loss, since the switchover happened without a graceful state flush.