HP XP P9500 - Page 384

Table 87 Using a 4x4x4 Cascade Configuration
SeeDescriptionTarget
Maintenance or
FailureNumber
Performing Primary
Site Storage System
Suspend Continuous
Access Synchronous Z
Primary site storage
system maintenance
Maintenance1
Maintenance on page
8–99
copy pairs, and then
change the
configuration to a 4x4
configuration
(Intermediate >
Remote).
Performing
intermediate site
Suspend Continuous
Access Synchronous Z
Intermediate site
storage system
maintenance
2
storage maintenance
on page 8–103.
copy pairs, and then
resynchronize them
after maintenance has
finished.
Performing remote site
storage maintenance
on page 8-106
Suspend Continuous
Access Journal Z copy
pairs, and then
Remote site storage
system maintenance
3
resynchronize them
after maintenance has
finished.
Performing primary
site host maintenance
on page 8-108
Perform a reverse
resync on Continuous
Access Synchronous Z
Primary site host
maintenance
4
copy pairs, and then
change the
configuration to a
Multi- Target
configuration in which
operation is performed
from the intermediate
site.
—Operation in the
4x4x4 Cascade
Intermediate site host
maintenance
5
configuration is not
affected.
—Operation in the
4x4x4 Cascade
Remote site host
maintenance
6
configuration is not
affected.
Operating procedure
during a primary site
Suspend Continuous
Access Synchronous Z
Primary site storage
system failure (volatile)
Failure7
storage system failurecopy pairs, and then
(volatile) on page
8-112
change the
configuration to a 4x4
configuration
(Intermediate >
Remote). The
Continuous Access
Synchronous Z copy
pairs whose S-VOLs
are in the storage
system in which the
failure occurred must
be deleted and then
recreated.
384 Maintenance and Troubleshooting Operations