Hitachi MP-96RD625-01 manual SIz URz

Figure 3-10 combines the configurations shown in Figure 3-8 and Figure

3-9. Within a single URz pair, the primary data volume and secondary data volume are both functioning as SIz S-VOLs, providing multiple copies at the primary and secondary sites.

		URz
Primary data	Master journal	Secondary
volume	volume	data volume
S-VOL	SIz	S-VOL
	T-VOL
MCU		RCU

Restore journal volume

SIz

T-VOL

Figure 3-10 Shared URz primary data volume and SIz S-VOL, and URz secondary data volume and SIz S-VOL

•URz/SIz configuration where a SIz T-VOL in Split status is used as a URz primary data volume

In the following example, the SIz T-VOL in Split status is also functioning as a URz primary data volume. This configuration allows URz to make a remote backup copy of the SIz T-VOL.

SIz

		URz
Primary data
volume
S-VOL in
Split status
T-VOL in	Master journal	Secondary	Restore journal
Split status	volume	data volume	volume

MCU RCU

Figure 3-11 SIz T-VOL in Split Status Functioning as URz Primary Data Volume

If a failure occurs and the SIz S-VOL is damaged in Figure 3-11, take the following steps to copy data from the URz secondary data volume to the SIz S-VOL so that data can be restored to the SIz S-VOL:

1.Execute the Business Continuity Manager YKDELETE command on the SIz pair to release the pair (see Figure 3-12).

2.Execute the Business Continuity Manager YKSUSPND REVERSE command on the URz pair to suspend the pair. After that, execute the YKRESYNC REVERSE command to reverse the copy direction and re-establish the pair (see Figure 3-13).

3-28 Chapter 3 Preparing for Universal Replicator z/OS Operations

Hitachi Universal Replicator for IBM /OS User’s Guide