Manual Failover

Manual failover of SRDF Groups
Once SRDF is fully configured failover/failback  is controlled via the VCS cluster agent and the srdf commands should not be issued manually. The following steps outline what the VCS agent does. If for any reason the agent fails, or you wish to test the functionality during the initial setup, then you may be required to use these commands.

Note: srdf_APPR01 is an async group.

• Logon to the management host at R1 site:

   symrdf -g srdf_APP01 disable
   symrdf -g srdf_APP01 set mode sync

• The following command will failover to Target (R2) site, swap the personality and then perform an establish:

   symrdg -sid 111 -g srdf_APP01 failover -est

• Run a query to verify that the R1 devices are now showing as R2's. Double check everything.

• Log on to the management host at the target site. This will now be the R1 site because you have just failed over.

• Set the mode to async and enable consistency on the group:

   symrdf -g srdf_APP01 set mode async
   symrdf -g srdf_APP01 enable