HP XP7 Continuous Access Synchronous for Mainframe Systems User Guide (TK911-96003)

Figure 2 Shared Cnt Ac-S Z P-VOL with BC Z P-VOL
• In the following figure, the Cnt Ac-S Z S-VOL also functions as an BC Z P-VOL. In this
configuration, BC Z provides another (or several more) backup copies of a Cnt Ac-S Z P-VOL.
When a BC Z P-VOL is shared with the Cnt Ac-S Z S-VOL, the write operation to the Cnt Ac-S
Z P-VOL takes a longer time than normal. This is especially true when the BC Z pair is in the
V-Split/SUSPVS status and is caused by the BC Z copying process.
Figure 3 Shared Cnt Ac-S Z S-VOL with BC Z P-VOL
• In the following figure, the configurations shown in the previous two figures are combined.
Both the Cnt Ac-S Z P-VOL and S-VOL function as BC Z P-VOLs, providing multiple copies at
the local and remote sites.
Figure 4 Shared Cnt Ac-S Z P-VOL, S-VOL with multiple BC Z P-VOLs
Configurations with Business Copy Z S-VOLs
In the following figure, an BC Z S-VOL also functions as a Cnt Ac-S Z P-VOL. This configuration
requires that the BC Z pair is split before the Cnt Ac-S Z pair is created.
Figure 5 Shared BC Z S-VOL with Cnt Ac-S Z P-VOL
Business Copy Z 55