HP StorageWorks XP Remote Web Console Software User Manual
Page 23
◦
In journal group 3, the latest time stamp is 15:03.
◦
In journal group 4, the latest time stamp is 15:04.
2.
Universal Replicator for Mainframe searches for the oldest time stamp from the ones
identified in step
and restores data up to that time to the secondary volumes.
In the example shown in
, the oldest time stamp is 15:00. Universal
Replicator for Mainframe restores all data that have a time stamp 15:00 or earlier to the
secondary data volumes.
◦
For journal group 1, Universal Replicator for Mainframe restores all data up to 15:00.
◦
For journal group 2, Universal Replicator for Mainframe restores all data up to 14:02.
◦
For journal group 3, Universal Replicator for Mainframe restores all data up to 14:03.
◦
For journal group 4, Universal Replicator for Mainframe restores all data up to 14:04
Figure 4 Time Stamps of Data that Have Not Been Restored to Secondary Data Volumes
•
Consistency Time
In the Universal Replicator for Mainframe windows, consistency times of extended consistency
groups, journal groups, and data volume pairs are displayed. These consistency times have
the following meanings:
◦
The consistency time of an extended consistency group is the latest time stamp of the
restored data in the group in which consistency is guaranteed.
In the example shown in
, the consistency time of the extended
consistency group is 15:00.
◦
The consistency time of a journal group is the latest time stamp of the restored data.
In the example shown in
, the consistency times of journal groups 1
to 4 are as follows:
–
The consistency time of journal group 1 is 15:00.
–
The consistency time of journal group 2 is 14:02.
–
The consistency time of journal group 3 is 14:03.
–
The consistency time of journal group 4 is 14:04.
◦
The consistency time of a data volume pair is the latest time stamp of the data that has
been restored when the pair becomes suspended.
In the example shown in
, if a pair in journal group 1, 2, 3, or 4 is
suspended immediately after data has been restored, the consistency time of the pair will
be as follows:
–
If a pair in journal group 1 is suspended, the consistency time will be 15:00.
–
If a pair in journal group 2 is suspended, the consistency time will be 14:02.
Components
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