HP XP Continuous Access Software - Manual (Page 26)

NOTE:
If the metadata or journal data cannot be stored for a given length of time because the metadata or
journal data areas are full with metadata or journal data that has not been discarded, the pair is
suspended. Use a Command View XP management station or XP Remote Web Console to specify this
timeout period (Data overflow watch) as a journal group option. This timeout period must be within the
range of 0 to 600 seconds. For more information, see Changing options for journal groups .
Consistency groups
Continuous Access XP Journal consistency group numbers are equivalent to Continuous Access XP
Asynchronous consistency group numbers. Therefore, you can create a Continuous Access XP Journal
pair with consistency group numbers from RAID Manager XP as is the case with Continuous Access XP
Asynchronous. In Continuous Access XP Journal operations, consistency group numbers specified from
RAID Manager XP are assigned to the journal group numbers.
Consistency group number specifications are different from journal group number specifications. Each
array has the ability to manage a total of 128 consistency groups for the primary and secondary data
volumes (No. 0 to 127 are assigned).
NOTE:
The consistency group number of primary and secondary data volumes to be paired must be the same.
NOTE:
When Continuous Access XP Journal and Universal Replicator for z/OS coexist in the same local
array, the consistency group number must be different from the Continuous Access XP Asynchronous
consistency group number.
Figure 4 shows the corresponding consistency group and journal group numbers.
26 Overview of Continuous Access XP Journal