HP XP P9500 Storage - Manual (Page 241)

The following table describes the configuration files required for using Business Continuity Manager
in a 4x4x4 Cascade configuration.
Table 80 Required Configuration files (4x4x4 Cascade)
Remarks Description Item
-- Disk configuration definition files are required for
the primary, intermediate, and remote sites. Disk configuration
definition file
-- Prepare the following route lists by referring to
Table 81 (page 241) :
Route list definition file
and command device
definition file
•
Route list that is required when all sites are
available
• Route list used when a failure occurs at a site
(recommended)
This file is not required if you use Remote Web
Console to create a logical path. A path set for the following logical paths is required: Path set definition file
•
An inter-control unit logical path (bidirectional)
between the primary site and the intermediate
site
• An inter-disk controller logical path (bidirectional)
between the intermediate site and the remote site
-- The following Continuous Access Synchronous Z
copy groups are required: Copy group definition
file
•
A copy group container between the primary site
and the intermediate site is required (Continuous
Access Synchronous Z timestamp transfer mode
enabled, and the Continuous Access Synchronous
Z Consistency Preservation Function used).
•
Copy groups used for error handling must be
created by dividing the above copy group
container by storage system (Continuous Access
Synchronous Z timestamp transfer mode enabled,
and the Continuous Access Synchronous Z
Consistency Preservation Function used).
The following Continuous Access Journal Z copy
groups are required:
• An EXCTG between the intermediate site and the
remote site is required.
•
Copy groups used for error handling must be
created by dividing the above EXCTG by storage
system. Such copy groups cannot be used as an
EXCTG.
The following table describes the route list required for operation in a 4x4x4 Cascade configuration.
Table 81 Required route list (4x4x4 Cascade configuration)
Route list needed in Business Continuity Manager Remote site
condition Intermediate site
condition Primary site
condition Host on which Business
Continuity Manager is
started
Primary
→ Intermediate → Remote
Usable Usable Usable Primary host
Primary
→ Intermediate
Unusable Usable Usable
Primary
#
Usable Unusable Usable
Unusable Unusable Usable
Intermediate
→ Primary
Usable Usable Usable Intermediate host
Intermediate → Remote
Defining a 4x4x4 Cascade Configuration 241