HP XP24000/XP20000 for FlashCopy Mirroring Software User Guide (T5240-96012, November 2011)

To create the multiple relationships from one source is called multiple relationship. Version 2 allows
you to establish up to 16 relationships from one extent, as shown in (page 31).
Figure 13 Multiple Relationships
The extent that is already set as the copy target cannot be used as a copy source extent to create
a new Version 2 relationship. You cannot create a cascaded Version 2 relationship. See (page 32)
for an example.
Establishing a Version 2 Relationship 31