Performing Primary Site Storage System Maintenance; Failover - HP XP P9500 Software User's Manual

Table 87 Using a 4x4x4 Cascade Configuration (continued)
Number
14

Performing Primary Site Storage System Maintenance

The following explains the procedures for performing primary site storage system maintenance.

Failover

1. Stop operation on the primary site.
2. From the intermediate site, execute the YKSUSPND REVERSE command for the Continuous
Access Synchronous Z copy group container.
YKQUERY
YKSUSPND REVERSE
YKEWAIT GOTO(SUSPEND)
3. Start primary site storage system maintenance.
386 Maintenance and Troubleshooting Operations
Maintenance or
Failure Target
Path failure between
the Primary >
Intermediate storage
systems
Description See
Access Synchronous Z host failure on page
copy pairs, and then 8–129
change the
configuration to a
Multi-Target
configuration in which
operation is performed
from the intermediate
site.
Suspend Continuous Operating procedure
Access Synchronous Z during a path failure
copy pairs by using between the primary
the Continuous Access site storage system
Synchronous Z and the intermediate
Consistency site storage system on
Preservation function, page 8–132
and then
resynchronize them.