HP StorageWorks XP Remote Web Console Software User Manual
Page 99
ShadowImage for z/OS user guide
99
•
Creating pairs by dataset copying
To create pairs between extents, the same number of resources listed under the column “Number of
resources used per pair” (see
) is necessary, provided that no extents in the same volume
overlap. If the extents used for establishing the pairs overlap, the number of resources required to
establish the relations is the number of resources listed under the column “Number of resources used
per pair” multiplied by the number of extents that overlap.
The following figures illustrate the different cases of copying, for example when the extents overlap or
not. For information about the calculation example of the used resources, see
.
Figure 45
Copying Data in Two Extents that do not Overlap (One T-VOL)
Figure 46
Copying Data in Two Extents that do not Overlap (Two T-VOLs)
Figure 47
Copying Data in Two Extents that do not Overlap (Two S-VOLs)
Figure 48
Copying Data in Three Extents that Overlap (One T-VOL)