Shadowimage Duplicated Mirroring; Figure 2.2 Shadowimage Duplicated Mirrors - Hitachi TAGMASTORE MK-90RD011-25 User Manual

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.
Volume A
Volume B
Figure 2.2 ShadowImage Duplicated Mirrors
10 Chapter 2 Overview of CCI Operations
Group name: oradb
Volume A
MU# 0
Paired logical volume
Volume B
MU# 0
Paired logical volume
Group name: oradb-1
Volume A
MU# 1
Paired logical volume
Volume B
MU# 1
Paired logical volume
Group name: oradb-2
Volume A
MU# 2
Paired logical volume
Volume B
MU# 2
Paired logical volume
Oradb1
Oradb2
Oradb1-1
Oradb1-2
Oradb2-1
Oradb2-2
Volume C
Volume D
Volume E
Volume F
Volume G
Volume H