HP StorageWorks XP24000/XP20000 for Compatible Extended Remote Copy (XRC) Software User's Guide (T5238-96001, March 2008)

Figure 7 Configuration with Volume Functioning as Compatible XRC S-VOL and ShadowImage
S-VOL
• Configuration in which one volume is functioning as XRC P-VOL and ShadowImage S-VOL, and
another volume is functioning as XRC S-VOL and ShadowImage S-VOL
Figure 8 on page 18 shows the configuration in which one volume is functioning as both an XRC
P-VOL and a ShadowImage S-VOL (source volume) and another volume is functioning as both an
XRC S-VOL (secondary volume) and a ShadowImage S-VOL (source volume). In this configuration,
data is copied within the primary site using ShadowImage, and it is copied from the primary site
to the secondary site using XRC. Afterward, it is copied within the secondary site using
ShadowImage.
Figure 8 Configuration with One Volume Used as Compatible XRC P-VOL Another as S-VOL
Using Compatible XRC in Conjunction with FlashCopy Mirror
XRC can be used in conjunction with FlashCopy Mirroring to maintain data in the secondary site and
the primary site for disaster recovery and data migration purposes.
• Configuration in which a volume is functioning as XRC P-VOL and FlashCopy Mirroring S-VOL
Figure 9 on page 19 shows the configuration in which a volume is functioning as both an XRC
P-VOL and a FlashCopy Mirroring S-VOL. In this configuration, data is copied within the primary
site using FlashCopy Mirroring, and it is copied from the primary site to the secondary site using
XRC.
About Compatible XRC Operations18