HP StorageWorks XP24000 for FlashCopy Mirroring Software User's Guide (T5240-96001, June 2007)
3Preparing forVersion 1
Operations
This chapter d escribes the requirements and preparations for performing Version 1 operations.
Requirements for Version 1
You ca n establish a Version 1 relationship for other than simplex volumes. The following table shows
other
requirements for using Version 1.
Table 9 Requirements for Version 1
Item
Requirement
Controller emulation type
I-2105
Volume emulation type
• 3390-3, 3390-9 , 3390-L, 33 90-M
•
3390-3a, 3 390-3b, 3390-3c
•
3390-9a, 3 390-9b, 3390-9c
•
3390-la, 33 90-lb, 33 90-lc
•
3390-ma, 3390-mb, 3390-mc
•
3380-3
SSID boundary setting
256-LDEV
Available volume
Version1canuse avolumewhose LDKC:CU:LDEV (logical DKC: control
unit image: logical device ID) is b etween 00:00:00 and 00:FE:FF and
between 01:00:00 and 01:FE:FF.
Note:
• Under some environment configurations for the storage system, you may not use some of the
emulation types in the table above.
• The S-VOL and T-VOL must be established in the same CU image.
• When the SSID boundary is 64-LDEV, S -VOL and T-VOL must be established in the same CU
image and SSID.
• When a relationship is established and the SSID boundary is changed from 256-LDEV to
64-LDEV, the SSIDs for the T-VOL and S-VOL become d ifferent. Because of this c ondition, the
relationship cannot be deleted from the host. In this case, you should use the H P StorageWorks
XP
Remote Web Console computer and delete the relationship from the window of ShadowImage
for Mainframe.
• The SSID boundary of an IBM ESS is 256-LDEV.
For information about sharing volumes with ShadowImage for Mainframe, see
“Using Version 1 with ShadowImage for Mainframe ” on page 18.
Calculating the Maximum Number of Version 1 Relationships
When you establish Version 1 relationships, resources called differential tables and pair tables will be
required. The number of available d ifferential tables and pair tables in one storage system depends on
whether additional shared memory is installed. There are several patterns of additional shared memor y
for differential tables and pair tables, and you can choose any pattern you like. Table 10 on page 24
shows the patterns of additional shared memor y.
XP24000 for FlashCopy Mirroring Software User's Guide
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