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10 Chapter 2 Overview of CCI Operations
2.2.1 ShadowImage Duplicated Mirroring
Duplicated mirroring of a single primary volume is possible when the ShadowImage feature is
used. The duplicated mirror volumes of the P-VOL are expressed as virtual volumes using the
mirror descriptors (MU#0-2) in the configuration definition file as shown below.
Group name: oradb
Paired logical volume
Volume C
Oradb1
Paired logical volume
Volume D
Oradb2
Volume A
Volume B
Group name: oradb-1
Paired logical volume
Volume E
Oradb1-1
Paired logical volume
Volume F
Oradb1-2
Group name: oradb-2
Paired logical volume
Volume G
Oradb2-1
Paired logical volume
Volume H
Oradb2-2
Volume A
MU# 1
Volume B
MU# 1
Volume A
MU# 0
Volume B
MU# 0
Volume A
MU# 2
Volume B
MU# 2
Figure 2.2 ShadowImage Duplicated Mirrors