2.If the TCz Synchronous volume is not in Simplex status, use Business Continuity Manager to execute the YKDELETE command onto the TCz Synchronous pair, and then wait until the status changes to Simplex. Note: YKDELETE is a command for releasing a pair.
If the TCz Synchronous volume is in Simplex status, use Business Continuity Manager to execute the YKMAKE REVERSE command onto the TCz Synchronous pair that exists between the primary site and the intermediate site.
Note: YKMAKE is a command for establishing a pair.
1.Use Business Continuity Manager to execute the YKSUSPND FORWARD command onto the TCz Synchronous pair that exists between the primary site and the intermediate site.
2.Use Business Continuity Manager to execute the YKDELETE command onto the TCz Synchronous pair that exists between the primary site and the intermediate site.
3.Use volumes in the primary site to resume your business tasks.
4.Execute the YKDELETE command onto journal groups that will make a URz pair between the intermediate site and the secondary site.
The system returns to the status before the 3DC cascading configuration was set up.
For detailed information about Business Continuity Manager usage and copy statuses, please refer to Business Continuity Manager User's Guide.
TCz Synchronous (3DC Multi-target Configuration)
The USP V storage system provides the function to combine URz and TCz Synchronous. In a system where URz and TCz Synchronous are combined, there are one primary site and two secondary sites. One of the secondary sites is for synchronous remote copy, and is usually located at a short distance from the primary site. The other secondary site is for asynchronous remote copy, and is usually located at a long distance from the primary site. Such a system configuration is called three data center (3DC)
3DC
The figure below illustrates a 3DC multi-target configuration where URz and TCz Synchronous are combined. In this configuration, there are three sites as follows:
•Primary site for both TCz Synchronous and URz
•Secondary site for TCz Synchronous
Chapter 3 Preparing for Universal Replicator z/OS Operations |
