SRDF configurations - options

SRDF/Automated Replication (SRDF/AR)
• Combines SRDF/DM and SRDF/S
• Unlimited distance
• Disaster restart solution
• Requires EMC TimeFinder®

 

SRDF/Consistency Group (SRDF/CG)
• SRDF/A and/or SRDF/S mode
• Used when co-dependent data resides on multiple physical locations
• Ensures a complete, restartable point-in-time remote copy

 


SRDF/Star
• SRDF/CG with SRDF/S and SRDF/A
• Three-site disaster recovery solution providing a zero data loss recovery
• Cascaded SRDF/Star (top)
• SRDF/EDP with DL R21 to reduce the cost of drives (top)
• Concurrent SRDF/Star (bottom)