HP StorageWorks XP24000 for FlashCopy Mirroring Software User's Guide (T5240-96001, June 2007)

8Preparing forVersion 2
Operations
This chapter d escribes the requirements and preparations for performing Version 2 operations.
Requirements for Version 2
You can establish a Version 2 relationship not only for simplex volumes, but also for ShadowImage for
Mainframe S -VOLs or T-VOLs in a status other than simplex. For information about sharing volumes with
ShadowImage for Mainframe, see “Using Version 2 with ShadowImage for Mainframe” on page 48.
The following table shows other requirements for using Version 2.
Tabl e 26 Requirements for Version 2
Item
Requirement
Controller emulation
type
I-2105 and I-2107
The controller emulation type of an S-VOL and a T-VOL must be the same.
Available volume
Version2canuse avolumewhose LDKC:CU:LDEV (LDKC: controlunit
image: logical device ID) is between 00:00:00 and 00:FE:FF, and
between 01:00:00 and 01:FE:FF.
Thefollowing tableshows theemulation typessupported by Version2, and theconditionsfor
combinations of the S-VOL and the T-VOL.
Table 27 Emulation Types Supported by Version 2
Emulation
Type of S-VOL
Emulation Type of T-VOL
3380-3 3390-3 3390-9 3390-L 3390-M
3380-3 OK NG NG NG NG
3390-3
NG
OK OK OK OK
3390-9
NG
OK OK OK OK
3390-L NG OK OK OK OK
3390-M NG
OK OK OK OK
If the emulation type starts with 3390, you can specify volumes with different emulation types for the
S-VOL and the T-VOL. However, note that you cannot establish a relationship using a 3380-3 volume
and a
volume whose emulation t ype starts with 3390. In the case of a 3380-3 volume, you must specify
3380-3 volumes for both the S-VOL and the T-VOL.
Note tha t the specified extent must be within the range of the user cylinders in each volume.
Calculating the Maximum Number of Version 2 Relationships
Version 2 can establish up to 1,048,575 relationships. However, Version 2 may not be able to establish
up to 1,048,575 relationships d epending on the number of resources required for the copy operation,
which varies according to the attributes (emulation type, capacity, size of the data that is copied, and
position of the extent) of the volumes and extents used for establishing the relationships.
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