- Notes, cautions, and warnings
- Preface
- Introduction
- Disaster recovery
- High availability
- Data migration
- SRDF I/O operations
- SRDF write operations
- SRDF read operations
- SRDF/A resilience and performance features
- Management tools
- More information
Dell SRDF Introduction
SRDF/A session cleanup
When an SRDF/A single session mode is dropped, SRDF:
- Marks new incoming writes at the primary array as being owed to the secondary array.
- Discards the capture and transmit delta sets, and marks the data as being owed to the secondary array. These tracks are sent to the secondary array once SRDF is resumed, as long as the copy direction remains primary-to-secondary.
- Marks and discards only the receive delta set at the secondary array, and marks the data as tracks owed to the primary array.
NOTE:It is very important to capture a gold copy of the dependent-write consistent data on the secondary array R2 devices prior to any resynchronization. Any resynchronization compromises the dependent-write consistent image. The gold copy can be stored on a remote set of BCVs or Clones.
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