• Issues Suspend & Run to make a suspending state for consistency group
on each MCU
• Searches/commits a minimum matching point of the CTQ-Marker on RCU
via MCU (in other words, do Journal Restore with CTQ-Marker)
• Repeats above until detecting an EOM (End Of Marker) marked on MCU
on all RCU via MCU
• Issues End of Suspend to terminate a suspending state, after committed
with EOM (End Of Marker) marked on MCU on all RCU
Exception: If an uncommitted state (that is, link failure) is detected while
executing its operation, then the operation of committing is aborted on
keeping current CTQ-Marker level, and a suspending state terminates without
waiting for the EOM (End Of Marker).
(2) pairsplit -P option
• Issues Freeze to consistency group on each MCU
• Issues Suspend & Run to make a suspending state for consistency group
on each MCU
• Searches/commits a minimum matching point of the CTQ-Marker on RCU
via MCU (in other words, do Journal Restore with CTQ-Marker)
• Repeats above until detecting an EOM (End Of Marker) marked on MCU
on all RCU via MCU
• Issues End of Suspend to terminate a suspending state
Exception: If an uncommitted state (that is, link failure) is detected while
executing its operation, then the operation of committing is aborted on
keeping current CTQ-Marker level, and a suspending state terminates without
waiting for the EOM (End Of Marker).
(3) pairsplit -S option
• Issues Freeze to consistency group on each MCU
• Issues Delete & Run to make a deleting state for consistency group on
each MCU
• Searches/commits a minimum matching point of the CTQ-Marker on RCU
via MCU (in other words, do Journal Restore with CTQ-Marker)
• Repeats above until detecting an EOM (End Of Marker) marked on MCU
on all RCU via MCU
• Issues End of Delete to terminate a deleting state, after committed with
EOM (End Of Marker) on all RCU
Exception: If an uncommitted state(that is, link failure) is detected while
executing its operation, then the operation of committing is aborted on
keeping current CTQ-Marker level, and a deleting state terminates without
waiting for an EOM (End Of Marker).
6-48
Data replication operations with CCI
Command Control Interface User and Reference Guide
To Next Page
Loading...
