HP StorageWorks XP Remote Web Console Software - Manual (Page 43)

to calculate the number of differential tables and pair tables that are required for XP Auto LUN,
see the HP XP24000/XP20000 Auto LUN Software User's Guide and see the HP
XP24000/XP20000 Snapshot User's Guide to calculate the number of differential tables that are
required for XP Snapshot.
Assuming that only ShadowImage for Mainframe uses differential tables and pair tables, this section
describes how to calculate the number of differential tables and pair tables required for one SIz
Assessing ShadowImage for Mainframe Requirements 43