HP XP Racks - Manual (Page 350)

7. From the primary host, make sure that the Cnt Ac-S Z copy group status is SWAPPING, and
then execute the YKRESYNC FORWARD command for the Cnt Ac-S Z copy group.
8. Transfer the application information to the primary site.
Using a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration
The following table explains how to perform maintenance for a 3DC Cascade (Cnt Ac-J Z x Cnt
Ac-J Z) configuration and how to take action if a failure occurs.
Table 105 Using a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration
See: Description Target Maintenance
or failure
“Performing primary site
storage system
maintenance” (page 352) Suspend the Continuous Access Journal Z copy pair between
the primary site and the intermediate site, and then change
the configuration to a 2DC configuration (Intermediate
→
Remote).
Primary site storage
system maintenance Maintenance
“Performing intermediate site
storage system
maintenance” (page 354) Create a Continuous Access Journal Z copy pair between
the primary site and the remote site, and then change the
configuration to a 2DC configuration (Primary
→ Remote).
Intermediate site
storage system
maintenance
350 Maintenance and troubleshooting operations