What does the term "failover" refer to in SonicWall devices?

The term "failover" in SonicWall devices refers specifically to the automatic switching to a standby device when the primary device experiences a failure. This mechanism is crucial for maintaining network availability and continuity, particularly in environments where downtime can lead to significant disruptions. By having a standby device ready to take over in the event of a failure, organizations can ensure that their network services remain operational with minimal interruption.

This capability is essential for maintaining high availability in network operations, as it allows for seamless transitions during unexpected outages without manual intervention. Other options provided, such as upgrading software or scheduling hardware checks, do not encompass the specific function of ensuring continual operation during device failure. Additionally, network speed measurement does not relate to the concept of failover at all, further clarifying why the focus on automatic switching to a standby device is the correct understanding of the term within the context of SonicWall devices.