Hitachi ShadowImage for z/OS user guide (HIT9503-96004, June 2006)

ShadowImage for z/OS user guide 97
Table 45 shows the emulation types supported by FlashCopy Mirror Version 2, and the condition for
combination of S-VOL and T-VOL.
If the emulation type begins with 3390, you can specify the volumes of different emulation types for S-VOL
and T-VOL. However, you cannot create a pair using a 3380-3 volume and a volume with an emulation
type that begins with 3390. In the case of a 3380-3 volume, you must specify 3380-3 volumes for both
S-VOL and T-VOL.
NOTE: Whether or not you can perform the copy via host depends on the status of the URz pair. For more
information, see the Universal Replicator for z/OS® User’s Guide.
Functionalities of Compatible Mirroring for IBM FlashCopy Version2
FlashCopy Mirror Version 2 supports the functionalities below.
• Establishing multiple relationship (See ”Establishing Multiple Relationships” on page 97)
• Specifying COPY mode or NOCOPY mode (See ”Specifying COPY mode or NOCOPY mode” on
page 98)
• Volume copying (See ”Volume Copying and Dataset Copying” on page 99)
• Dataset copying (See ”Volume Copying and Dataset Copying” on page 99)
Establishing Multiple Relationships
Creating the multiple pairs from one extent is called “multiple relationship”. FlashCopy Mirror Version 2
allows you to create up to 16 pairs from one extent. The figure below illustrates the examples of multiple
relationships.
Figure 48 Examples of Multiple Relationships
Table 45 Emulation Types Supported by FlashCopy Mirror Version 2
Emulation Type
of S-VOL
Emulation Type of T-VOL
3380-3 3390-3 3390-3R 3390-9 3390-L 3390-M
3380-3 OKXXXXX
3390-3 X OKOKOKOKOK
3390-3R X OKOKOKOKOK
3390-9 X OKOKOKOKOK
3390-L X OKOKOKOKOK
3390-M X OKOKOKOKOK