HP XP P9500 Storage - Manual (Page 42)

Figure 7 Shared Cnt Ac-S Z M-VOL with BC Z S-VOL
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In the following figure, the Continuous Access Synchronous Z R-VOL also functions as a Business
Copy Z S-VOL. In this configuration, Business Copy Z provides another (or several more)
backup copies of a Continuous Access Synchronous Z M-VOL.
When a Business Copy Z S-VOL is shared with the Continuous Access Synchronous Z R-VOL,
the write operation to the Continuous Access Synchronous Z M-VOL takes a longer time than
normally. This is especially true when the Business Copy Z pair is in the PSUS(SP) status and
is caused by the Business Copy Z copying process.
Figure 8 Shared Cnt Ac-S Z R-VOL with BC Z S-VOL
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In the following figure, the configurations shown in the first two figures in this section are
combined. Both the Continuous Access Synchronous Z M-VOL and R-VOL function as Business
Copy Z S-VOLs, providing multiple copies at the local and remote sites.
Figure 9 Shared Cnt Ac-S Z M-VOL, R-VOL with multiple BC Z S-VOLs
Configurations with Business Copy Z T-VOLs
In the following figure, a Business Copy Z T-VOL also functions as a Continuous Access Synchronous
Z M-VOL. This configuration requires that the Business Copy Z pair is split before the Continuous
Access Synchronous Z pair is created.
Figure 10 Shared BC Z T-VOL with Cnt Ac-S Z M-VOL
42 Sharing Continuous Access Synchronous Z volumes