–To display extended consistency groups in which no journal group is registered, select Free. To display extended consistency groups belonging to an LDKC, select the LDKC from below Free.
The extended consistency groups are displayed in the upper right list (Figure
Figure 4-13 Extended Consistency Groups in the EXCTG Operation Window
•EXCTG: Indicates an extended consistency group number and an LDKC number that is enclosed by parentheses. This number is a
•Attribute: Indicates the attribute of an extended consistency group.
An extended consistency group in primary site (primary EXCTG).
An extended consistency group in secondary site (secondary EXCTG)
This column displays the word changing when all journal groups in an extended consistency group are being registered.
•C/T: Displays the consistency time of an extended consistency group. For example, if the consistency time is 10:00 a.m., secondary data volumes in the extended consistency group are synchronized with the primary data volumes that were available as of 10:00 a.m.
The consistency time is displayed in the following format:
month/date/year hour/minute/second
For the number of seconds, the number before and after the decimal point is displayed.
This column displays the phrase Time is not consistent if secondary volumes in active journal groups in the extended consistency group do not have the same time stamp. For example, when a new journal group is added to the extended consistency group, this column displays Time is not consistent if the time stamp of a secondary data volume in this journal group is newer than the time stamp of secondary data volumes in the existing journal groups.
Note: To maintain data update sequence, URz performs arbitration processing on journal groups in Active status only. URz does not perform arbitration processing on journal groups in Stop status.
This column displays There is no time stamp for an extended journal group containing journal groups, if an initial copy operation is performed when hosts do not issue any I/O request.
Chapter 4 Using the Universal Replicator for z/OS GUI |
