DR Test - Failover / Failback (R2 Data가 R1에 의해 update 될때)
Failover : R1에 Read/Write Access를 Disabled하고, R2에 대하여 Read/Write Enabled.한다.
또한 SRDF Replication을 Suspend. 반대로는 Failback.
1. Failover 절차
1) Source Server Shutdown
2) DR Server에서 실행
$ symrdf -g <rdfgroupname> failover -establish
2. Failback 절차
1) DR Server Shutdown
2) Source서버에서 실행
$ symrdf -g failover -establish
* failover/establish is NOT same as failover/swap/establish
Swap은 Replication 방향을 반대로 해주는 명령어다.
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