What cluster technique should be implemented for a database server that requires data synchronization and replication with failover capabilities?

The active/passive cluster technique is particularly effective for a database server that needs data synchronization and replication along with failover capabilities. In this configuration, one node is actively handling requests and processing data, while the secondary node remains on standby, ready to take over in case the primary node fails. This setup provides a robust mechanism for ensuring high availability, as the passive node can quickly take over without significant downtime.

Data synchronization is maintained through various replication methods, ensuring that both nodes have consistent information. If the active node encounters a failure, the passive node can become active, minimizing service interruption and enabling seamless continuity of operations. This failover capability is crucial in environments where database access and uptime are critical for business operations.

In contrast, other clustering techniques, such as active/active, involve multiple nodes working simultaneously and may introduce complexity in data synchronization, making them less suitable for scenarios needing strict failover capabilities. Single local quorum and passive/passive setups don't provide the necessary immediate failover or active synchronization that the active/passive model offers.