Failover, Failback, Failover failback – HP XP Racks User Manual
Page 472
16. Use TPC-R on the primary host to restart the copying of the Cnt Ac-S copy pairs with the
HyperSwap attribute.
Cnt Ac-S copy pairs with the HyperSwap attribute are moved from the SWAPPING status to
the DUPLEX status.
Operation is returned to normal.
Operating procedure during a primary storage system failure (with no information
lost from memory)
The following are the operating procedures taken when a failure, with no information lost from
memory, occurs in the primary storage system.
Failover
The failover procedure taken when a failure, with no information lost from memory, occurs in the
primary storage system is the same as the failover procedure taken when a failure, with information
lost from memory, occurs in the primary storage system. See
.
Failback
1.
Recover the primary storage system failure.
2.
On the primary host, execute the YKDELETE command for Cnt Ac-J Z copy pairs that are
between the primary storage system and the remote storage system.
The Cnt Ac-J Z copy pairs that are between the primary storage system and the remote storage
system are moved to the SIMPLEX status.
472 Maintenance and troubleshooting operations