HP StorageWorks XP Remote Web Console Software - Manual (Page 27)

Figure 3 Double XRC for Mainframe Operations
Using XRC for Mainframe in Conjunction with TrueCopy z/OS
XRC for Mainframe can be used in conjunction with TrueCopy z/OS to maintain three copies of
critical data at your primary and/or secondary sites for disaster recovery purposes.
• Configuration in which a volume is functioning as XRC for Mainframe P-VOL and TrueCopy z/OS
M-VOL
The following figure shows the configuration in which a volume is functioning as both an XRC for
Mainframe P-VOL and a TrueCopy z/OS M-VOL. In this configuration, data is copied from the
primary site to the first secondary site using TrueCopy z/OS, and it is copied from the primary
site to the second secondary site using XRC for Mainframe.
Figure 4 Configuration in which a Volume is Functioning as XRC for Mainframe P-VOL and TrueCopy
z/OS M-VOL
• Configuration in which a volume is functioning as XRC for Mainframe S-VOL and TrueCopy z/OS
M-VOL
The following figure shows a configuration in which a volume is functioning as both an XRC for
Mainframe S-VOL and a TrueCopy z/OS M-VOL. In this configuration, data is copied from the
primary site to the first secondary site using XRC for Mainframe, and it is copied from the first
secondary site to the second secondary site using TrueCopy z/OS.
Hitachi Extended Remote Copy for Mainframe user guide 27