Manual Failback

Manual failback 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.

• Initiate these commands fro mthe current R1 site (i.e. the site that was the target R2 site before failover was initiated):

   symrdf -sid 112 -g srdf_APP01 disable
   symrdf -sid 112 -g srdf_APP01 set mode sync

• This will failover to R2, swap the personality and then perform an establish:

   symrdf -sid 112 -g srdf_APPR01 failover -est

• Run another query just to  verify that thae R2 luns are now shown as R1's.

• Logon to the new R1 side, set the mode to async and enable consistency on the group:

   symrdf -g srdf_APPR01 set mode async
   symrdf -g srdf_APPR01 enable