What does enabling high availability on a Sophos XG Firewall achieve?

Enabling high availability on a Sophos XG Firewall primarily focuses on providing redundancy and failover support. This means that in the event of a failure in one firewall system, the other can take over seamlessly, ensuring continuous operation without any downtime. High availability setups typically use two firewalls configured in a way that one acts as the primary unit while the other remains on standby. If the primary unit fails due to hardware issues, network failures, or software malfunctions, the secondary unit immediately becomes active, thus maintaining network security and connectivity.

This setup is essential for businesses that rely on uninterrupted internet and security services, as it minimizes the risk of service disruptions, which could affect operations and productivity. The other options, while important in their own right, do not capture the core functionality of high availability in this context.