HP XP P9500 Storage User Manual
Page 100
A backup of the Continuous Access Journal Z P-VOL at 2007/1/1 10:00 can be acquired in the
Business Copy Z S-VOL.
Relationship Between the ATTIME Suspend Time and Timeout Times
In the Cnt Ac-J Z ATTIME suspend function, the YKSUSPND command is executed with the Cnt Ac-J
Z ATTIME suspend time and timeout time specified. If you omit the timeout time, that time is
determined by the storage system.
Figure 54 Relationship between the YKSUSPND command execution, Cnt Ac-J Z ATTIME Suspend,
and Timeout times
When suspensions are executed (Cnt Ac-J Z ATTIME Suspend function)
Once the Cnt Ac-J Z ATTIME Suspend function is executed, circumstances dictate when copy group
suspension takes place:
•
When an update journal is detected after the specified Cnt Ac-J Z ATTIME suspend time on
the secondary site
As indicated in
, suspension is executed. Contents of the update journal
are not applied to the S-VOLs of Continuous Access Journal Z.
Figure 55 Copy-group suspension when an update journal is detected at or after the specified
Cnt Ac-J Z ATTIME suspend time
In
, the specified Cnt Ac-J Z ATTIME suspend time is 10:00:00, so:
1.
The data in the 09:59:58 update journal is reflected into the volume at the secondary
site, because the Cnt Ac-J Z ATTIME suspend time (10:00:00) has not been reached yet.
100 Understanding Business Continuity Manager functions