HP XP P9500 Storage - Manual (Page 474)

Table 107 Using a 4x4x4 Cascade Configuration (continued)
See Description Target
Maintenance or
Failure
Number
“Operating procedure
during a primary site
host failure” (page 508) Perform a reverse
resync for Continuous
Access Synchronous Z Primary site host
failure 13
copy pairs, and then
change the
configuration to a
4x4x4 Multi-Target
configuration in which
operation is performed
from the intermediate
site.
“Operating Procedure
During a Path Failure Suspend Continuous
Access Synchronous Z Path failure between
the Primary
→
14
between the Primary copy pairs by using Intermediate storage
systems
Site Storage System the Continuous Access
and the Intermediate Synchronous Z
Site Storage System”
(page 512) Consistency
Preservation function,
and then
resynchronize them.
Performing Primary Site Storage System Maintenance
The following are the procedures for performing primary site storage system maintenance.
Failover
1. Stop operation at the primary site.
2. From the intermediate site, execute the YKSUSPND REVERSE command for the Continuous
Access Synchronous Z copy group container.
474 Maintenance and troubleshooting operations