Hitachi MP-96RD625-01 manual Synchronous pair

6.Create a URz pair that consists of a volume in the primary site and a volume in the URz secondary site. Ensure that the primary data volume of the resulting pair is the volume in the primary site, and that the secondary data volume of the resulting pair is the volume in the URz secondary site.

To create this pair, use Business Continuity Manager to execute the YKMAKE command on the journal group corresponding to that pair.

When the pair is created, the system configuration returns to the original 3DC multi-target configuration.

Note: YKMAKE is a command for establishing a pair.

		Tasks	TCz Synchronous
	TCz	M-VOL/Prm.	secondary site
	Synchronous	data VOL
			Master
			JNLVOL
R-VOL			URz
Primary site	JNLVOL
			Sec. data VOL
			Restore URz
			JNLVOL secondary site

M-VOL: main volume

R-VOL: remote volume

Prm data VOL: primary data volume

Sec. data VOL: secondary data volume

JNLVOL: journal volume

		TCz Synchronous
	TCz	secondary site
		R-VOL
	Synchronous
Tasks		JNLVOL
M-VOL/Prm.
data VOL
Primary site	Master
	JNLVOL
	URz	Sec. data VOL
		Restore	URz
		JNLVOL	secondary site

Figure 3-27 Transferring Business Tasks from TCz Secondary Site to the Primary Site (in 3DC Multi-target Configuration)

Transferring Business Tasks from TCz Secondary Site to the Primary Site (When Delta Resync Operation is Performed in 3DC multi-target configuration)

If you remove failures from the primary site and other locations and then the system is changed to 3DC multi-target configuration, you can transfer your business tasks back to the primary site.

To transfer your business tasks back to the primary site, follow the procedure below. Business Continuity Manager is used in this procedure:

1.If the TCz Synchronous pair is suspended, use Business Continuity Manager to execute the YKRESYNC REVERSE command on the current TCz

	Synchronous pair.
3-48	Chapter 3 Preparing for Universal Replicator z/OS Operations

Hitachi Universal Replicator for IBM /OS User’s Guide