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3-38 Chapter 3 Preparing for Universal Replicator z/OS Operations
Hitachi Universal Replicator for IBM /OS User’s Guide
2. Issue a request for creating a TCz Synchronous pair to the primary
subsystem MCU where TCz Synchronous is installed.
3. Wait until the status of the TCz Synchronous pair becomes Duplex.
4. Issue a request for creating a URz pair to the MCU where URz is installed.
5. When creating a URz pair, be sure to select a value from 1 to 3 as the
mirror ID.
6. Wait until the status of the URz pair becomes Duplex.
Note: You must ensure that the TCz Synchronous pair status changes to
Duplex before the URz pair status changes to Duplex. If you have made a
request for changing the URz pair status to Duplex before the TCz
Synchronous pair status changes to Duplex, the request will be rejected.
For detailed information about installing and using TCz Synchronous, please
refer to TrueCopy for IBM z/OS User's Guide. For detailed information about
URz journal group configuration, see section
Journal Group Operations. For
detailed information about port configuration, see section
Configuring Port
Attributes.
Transferring Business Tasks Back to the Primary Site
After performing disaster recovery as explained in section Disaster Recovery in
a 3DC Cascading Configuration and removing failures at the primary site or
other locations, you will be able to transfer business tasks back to the primary
site.
To transfer business tasks back to the primary site, follow the procedure below.
Business Continuity Manager is used in this procedure:
7. Stop business tasks at the secondary site.
8. If the disaster recovery operation (as explained in section
Disaster
Recovery in a 3DC Cascading Configuration) could not change the URz pair
status to Duplex and could not reverse the copy direction, please use
Business Continuity Manager to execute the YKRESYNC REVERSE
command onto the journal groups that will make a URz pair between the
intermediate site and the secondary site.
Note: YKRESYNC is a command for re-establishing a pair.
1. Wait until the status of the URz pair changes to Duplex.
2. Use Business Continuity Manager to execute the YKSUSPND REVERSE
command onto the journal groups that will make a URz pair between the
intermediate site and the secondary site.
Note: YKSUSPND is a command for splitting a pair and stopping the copy
operation temporarily.
1. Wait until the status of the URz pair changes to Suspend.