DES-1111: Specialist - Technology Architect, PowerMax and VMAX All Flash Solutions Version 1.0Demo

SRDF/A Legacy (single-session) mode ties the capture and transmit cycles together so that R1 and R2 cycle switching is coupled — a new capture cycle cannot start until the prior transmit cycle has committed to R2. This coupled behavior is the defining characteristic of Legacy mode, in contrast to SRDF/A Multi-Cycle Mode, which decouples cycle switching between R1 and R2, provides more granular/predictable RPO, and increases SRDF/A session robustness while reducing Delta Set Extension (DSE) spillover. An architect who specifically wants R1/R2 cycle switching to remain coupled would implement Legacy mode.