HP P9000 Business Copy for Mainframe Systems User Guide (AV400-96386, October 2011)

Figure 5 Multiple journal groups containing Continuous Access Journal Z pairs
• When you execute Split processing, the pair status of Continuous Access Journal Z must be
Duplex, and the pair status of Business Copy Z must be Duplex or Pending. If the status of the
Continuous Access Journal Z pair or the Business Copy Z pair is Suspend because of a failure,
the journal data before the Split time may not be restored to the Business Copy Z T-VOL after
Split processing.
• Split processing does not necessarily start at the Split time. If there is a lot of journal data in
the journal volume, the Split processing start time may be later. For example, if journal data
that takes an hour to restore exists at Split time, the Split time may be an hour later.
• Journal data with the time stamp newer than the Split time may not be detected if a lot of
journal data remains after the specified timeout period passes since the Split time. In this case,
execute Split processing on Business Copy Z pair after the timeout period passes. You can
change the timeout value. The default timeout value is six hours. For details about the optimum
timeout value, see Continuous Access Journal guideline. For details about how to set a timeout
value, see the HP P9000 for Business Continuity Manager Software User Guide.
HP Confidential Continuous Access Journal Z 21