Introduced with the IBM XIV Storage System Software v11.5 the multi-site mirroring function, also referred to as the 3-way mirroring in the XIV GUI, enables world-class high availability and disaster recovery capabilities. It also enables clients to comply with business, government, and industry-driven requirements and regulations.
Essentially, 3-way mirroring as implemented in XIV provides you with these advantages:
•Three concurrent copies of data
•Simple failover and failback mechanism, while keeping data mirrored, to ensure ...