44 requirements for flashcopy mirror version 2 – HP XP Business Copy Software User Manual
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The extent that is already set as the copy target cannot be used as a copy source extent to create a new
FlashCopy Mirror Version 2 pair. In other words, you cannot create a cascaded FlashCopy Mirror Version
2 pairs. See
for the example.
Figure 47
Example of the Case FlashCopy Mirror Version 2 Pair Cannot be Created
shows the requirements for using FlashCopy Mirror Version 2.
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
•
Specifying COPY mode or NOCOPY mode (See ”
Specifying COPY mode or NOCOPY mode
Table 44
Requirements for FlashCopy Mirror Version 2
Item
Requirement
Controller emulation type
I-2105 or I-2107 (The controller emulation type of
an S-VOL and a T-VOL must be the same.)
Available volume
FlashCopy Mirror Version 2 can use the volume
whose CU:LDEV (control unit image: logical
device ID) is between 00:00 and 3F:FF.
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
OK
X
X
X
X
X
3390-3
X
OK
OK
OK
OK
OK
3390-3R
X
OK
OK
OK
OK
OK
3390-9
X
OK
OK
OK
OK
OK
3390-L
X
OK
OK
OK
OK
OK
3390-M
X
OK
OK
OK
OK
OK