Synchronous replication is the data protection technology that offers the lowest possible Recovery Point Objective (RPO) and can protect against an entire array failure. Synchronous replication ensures that data is simultaneously written to both the primary and secondary storage sites, providing real-time data protection. This approach minimizes data loss in the event of a disaster, as both sites contain identical data, making it the best choice for environments where data integrity and minimal RPO are critical.
Reference:
HPE Synchronous Replication Solutions
HPE Data Protection Overview