HP XP Racks - Manual (Page 242)

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 242) :
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 Cnt Ac-S Z copy groups are required: Copy group definition
file
•
A copy group container between the primary site and
the intermediate site is required (Cnt Ac-S Z timestamp
transfer mode enabled, and the Cnt Ac-S Z Consistency
Preservation Function used).
•
Copy groups used for error handling must be created
by dividing the above copy group container by storage
system (Cnt Ac-S Z timestamp transfer mode enabled,
and the Cnt Ac-S Z Consistency Preservation Function
used).
The following Cnt Ac-S 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
Intermediate
→ Primary
Unusable Usable Usable
Intermediate
→ Remote
Usable Usable Unusable
Intermediate Unusable Usable Unusable
Remote
→ Intermediate → Primary
Usable Usable Usable Remote host
None Usable Unusable Usable
242 Configuration definitions