HP XP7 Storage - Manual (Page 15)

Using Compatible XRC with Continuous Access Synchronous Z
The HP XP7 Storage system supports the use of Compatible XRC with Continuous Access Synchronous
Z to maintain three copies of critical data at your primary and/or secondary sites for disaster
recovery purposes.
Compatible XRC P-VOL functioning as Cnt Ac-S Z primary volume
The following figure shows the configuration in which a volume is functioning as both a Compatible
XRC P-VOL and a Cnt Ac-S Z primary volume. In this configuration, data is copied from the primary
site to the first secondary site using Cnt Ac-S Z.
Compatible XRC S-VOL functioning as Cnt Ac-S Z primary volume
The following figure shows the configuration in which a volume is functioning as both a Compatible
XRC S-VOL and a Cnt Ac-S Z primary volume. In this configuration, data is copied from the primary
site to the first secondary site using Compatible XRC, and it is copied from the first secondary site
to the second secondary site using Cnt Ac-S Z.
Using Compatible XRC with Business Copy Z
The HP XP7 Storage system supports the use of Compatible XRC with Business Copy Z (BC Z) to
maintain data in the secondary site and the primary site for disaster recovery and data migration
purposes.
Compatible XRC P-VOL functioning as BC Z S-VOL
The following figure shows the configuration in which a volume is functioning as both a Compatible
XRC P-VOL and a BC Z S-VOL. In this configuration, data is copied within the primary site using
BC Z, and it is copied from the primary site to the secondary site using Compatible XRC.
Using Compatible XRC with Continuous Access Synchronous Z 15