HP XP Business Copy Software - Manual (Page 110)

110 ShadowImage for the XP1024/XP128/XP12000/XP10000/SVS 200
the position of the extent) of the volumes and extents used for establishing the pairs. Furthermore, the total
number of available resources also varies according to the number of CUs. You can use the FlashCopy
Information pane (see Figure 25 ) to check the number of remaining resources that are currently available.
Check the FlashCopy Information pane when you create a FlashCopy Mirror Version 2 pair.
NOTE: The following software programs share the resources used for copy operation.
• ShadowImage for z/OS
• Business Copy XP
• Auto LUN XP
• Flex Copy XP
• Snapshot XP
The resources used by ShadowImage for z/OS, Business Copy XP, Auto LUN XP, Flex Copy XP, and
Snapshot XP cannot be used for FlashCopy Mirror Version 2. The resources that remain when you exclude
the resources used by ShadowImage for z/OS, Business Copy XP, Auto LUN XP, Snapshot XP, and Flex
Copy XP from the total resources are available resources for FlashCopy Mirror Version 2. For details about
the calculation of the resources used by each software program, refer to the following manuals.
• HP StorageWorks Business Copy XP User Guide for the specific disk array
• HP StorageWorks Auto LUN XP User Guide for the specific disk array
• HP StorageWorks Flex Copy XP User Guide
• HP StorageWorks Snapshot XP User Guide
For details about ShadowImage for Mainframe, see ” Requirements on the Maximum Number of Pairs” on
page 18 .
• Creating pairs by volume copying
Use the following expression to calculate the total number of the differential tables per pair:
Total number of the differential tables per pair = ( (X) + (Y) ) x 15 ÷ (Z)
(X): Number of the cylinders of the volume that is divided at arbitrary size.
(Y): Number of the control cylinders (see
Table 3 ).
(Z): Number of slots that can be managed by a differential table.
(1,916 x 32)