HP XP P9500 Storage - Manual (Page 163)

Table 45 Required configuration files (3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration) (continued)
Remarks Description Item
R-JNL number: Any value
Mirror ID: A non-zero value is different from the
mirror ID of any other Primary
→ Intermediate
and Primary
→ Remote Continuous Access
Journal Z copy pairs
• Continuous Access Journal Z copy group between
the primary site and the remote site
M-JNL number: Same value as the M-JNL number
between the primary site and the intermediate
site
R-JNL number: Same value as the R-JNL number
between the intermediate site and the remote site
Mirror ID: A non-zero value that is different from
the mirror ID of any other Primary
→ Intermediate
and Intermediate
→ Remote Continuous Access
Journal Z copy pairs
The following table describes the route list required for operation in a 3DC Cascade (Cnt Ac-J Z
x Cnt Ac-J Z) configuration.
Table 46 Required route list (3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration)
Required route list Remote site state Intermediate
site state Primary site
state Host on which Business
Continuity Manager is
started
Primary
→ Intermediate → Remote
Usable Usable Usable Primary host
Primary
→ Intermediate
Unusable Usable Usable
Primary
→ Remote
Usable Unusable Usable
Not required Unusable Unusable Usable
Intermediate → Primary Usable Usable Usable Intermediate host
Intermediate → Remote
Intermediate → Primary Unusable Usable Usable
Intermediate → Remote Usable Usable Unusable
Not required Unusable Usable Unusable
Remote → Intermediate → Primary Usable Usable Usable Remote host
Remote
→ Primary
Usable Unusable Usable
Remote
→ Intermediate
Usable Usable Unusable
Not required Usable Unusable Unusable
Legend:
Usable: The target site can be used.
Unusable: The target site cannot be used because of an error.
The following table shows how to prepare the configuration files at each site.
Defining a 3DC Cascade (Cnt Ac-J Z x Cnt Ac-J Z) configuration 163