Pair condition and recovery: path failure, primary to external storage system

If the status of the external storage system is normal, a failure might have occurred in a physical path from the primary or secondary storage system to the external storage system, or a switch. Recover from the failure that occurred in the physical path or switch.

The following table shows transitions for pair status and I/O mode, the volumes that are accessible from the server, and the location of the latest data when you can no longer use any physical path from the primary storage system to the quorum disk's external storage system.

GAD pairs might be created between the primary and secondary sites that configure GAD as follows:

• A P-VOL of a GAD pair is at site 1 and a S-VOL is at site 2.
• A P-VOL of a different GAD pair is at site 2 and a S-VOL is at site 1.

In this case, recover from a physical path failure at the secondary site. For more information, see Pair condition and recovery: path failure, secondary to external storage system.