HP XP Racks - Manual (Page 201)

Table 60 Required Configuration Files (Delta Resync Configuration)
Remarks Description Item
— Disk configuration definition files are required for the
primary, local, and remote sites. Disk configuration
definition file
Set this up before starting a copy operation. A Cnt Ac-S Z copy group is required between the
primary site and the local site. Copy group definition
file
When defining a copy group, specify the following DAD IDs for Primary
Device Address Domain in the Set Defaults panel:
A Cnt Ac-J Z copy group is required between the primary
site and the remote site.
• For a Cnt Ac-S Z copy group definition between the primary site and
the local site: DAD ID of the primary site (set the primary site as the
P-VOL)
The following delta resync Cnt Ac-J Z copy group is
required between the local site and the remote site.
• For the S-VOL of the delta resync Cnt Ac-J Z pair,
specify the same journal group number as that of the
S-VOL of the Cnt Ac-J Z copy group, using a different
mirror ID. •
For a Cnt Ac-J Z copy group definition between the primary site and
the remote site: DAD ID of the primary site (set the primary site as the
P-VOL)
•
For a Cnt Ac-J Z copy group definition for the delta resync function
between the local site and the remote site: DAD ID of the local site
(set the local site as the P-VOL)
If the Cnt Ac-S Z consistency preservation function is not used, the
consistency of a copy pair volume update sequence might not be
preserved in some cases (such as a line error).
Set this item before starting a copy operation. Prepare the following route lists by referring to
Table 61 (page 201) :
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 item is not necessary if you use Remote Web Console to set up
logical paths. The 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 local site
• An inter-disk controller logical path (bidirectional)
between the primary site and the remote site
•
An inter-disk controller logical path (bidirectional)
between the local site and remote site
Table 61 (page 201) describes the required route lists for using Business Continuity Manager in a
delta resync configuration.
Table 61 Required Route List (Delta Resync Configuration)
Route lists needed in
Business Continuity Manager Remote site
condition Local site
condition Primary site
condition Host on which
Business Continuity
Manager is started
Primary
→ Local
Usable Usable Usable Primary host
Primary → Remote
Primary
→ Local
Unusable Usable Usable
Primary → Remote Usable Unusable Usable
Primary
1
Unusable Unusable Usable
Local → Primary Usable Usable Usable Local host
Local
→ Remote
Local
→ Primary
Unusable Usable Usable
Local
→ Remote
Usable Usable Unusable
Defining a Delta Resync Configuration 201