HP XP Racks User Manual
Page 351
Table 105 Using a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration (continued)
See:
Description
Target
Maintenance
or failure
“Performing remote site
storage system
maintenance” (page 357)
Suspend the Continuous Access Journal Z copy pair between
the intermediate site and the remote site, and then change
the configuration to a 2DC configuration (Primary
→
Intermediate).
Remote site storage
system maintenance
“Performing primary site host
maintenance” (page 358)
Reverse the copy direction of the Continuous Access Journal
Z copy pair between the primary site and the intermediate
Primary site host
maintenance
site, and then change the configuration to a 3DC
Multi-Target (Cnt Ac-J Z x Cnt Ac-J Z) configuration in which
operation is performed from the intermediate site
(Intermediate
→ Primary, and Intermediate → Remote).
--
Operation in a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z)
configuration is not affected.
Intermediate site host
maintenance
--
Operation in a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z)
configuration is not affected.
Remote site host
maintenance
“Operating procedure
during a primary site storage
Suspend the Continuous Access Journal Z copy pair between
the primary site and the intermediate site, and then change
Primary site storage
system failure (with
Failure
the configuration to a 2DC configuration (Intermediate
→
Remote).
information lost from
memory)
information lost from
memory)” (page 361)
“Operating procedure
during a primary site storage
Suspend the Continuous Access Journal Z copy pair between
the primary site and the intermediate site, and then change
Primary site storage
system failure (with no
the configuration to a 2DC configuration (Intermediate
→
Remote).
information lost from
memory)
information lost from
memory)” (page 361)
“Operating procedure
during an intermediate site
Create a Continuous Access Journal Z copy pair between
the primary site and the remote site, and then change the
Intermediate site
storage system failure
configuration to a 2DC configuration (Primary
→ Remote).
(with information lost
from memory)
information lost from
memory)” (page 362)
During recovery, the Continuous Access Journal Z copy pairs
must be re-created between the primary site and the
intermediate site, and between the intermediate site and the
remote site.
“Operating procedure
during an intermediate site
Create a Continuous Access Journal Z copy pair between
the primary site and the remote site, and then change the
Intermediate site
storage system failure
configuration to a 2DC configuration (Primary
→ Remote).
(with no information
lost from memory)
no information lost from
memory)” (page 364)
During recovery, the Continuous Access Journal Z copy pair
between the intermediate site and the remote site must be
re-created.
“Operating procedure
during a remote site storage
After error recovery, delete the Continuous Access Journal
Z copy pair between the intermediate site and the remote
Remote site storage
system failure (with
site. Re-create the deleted Continuous Access Journal Z copy
pair.
information lost from
memory)
information lost from
memory)” (page 367)
“Operating procedure
during a remote site storage
After error recovery, resynchronize the Continuous Access
Journal Z copy pair between the intermediate site and the
remote site.
Remote site storage
system failure (with no
information lost from
memory)
system failure (with no
information lost from
memory)” (page 368)
“Operating procedure
during a primary site host
failure” (page 369)
Reverse the copy direction of the Continuous Access Journal
Z copy pair between the primary site and the intermediate
site, and then change the configuration to a 3DC
Primary site host
failure
Multi-Target (Cnt Ac-J Z x Cnt Ac-J Z) configuration in which
operation is performed from the intermediate site
(Intermediate
→ Primary, and Intermediate → Remote).
Using a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration
351