Hitachi ShadowImage for IBM z/OS User"s Guide (T5213-96002, June 2007)

2-2 About ShadowImage™ for IBM
®
z/OS
®
Operations
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
ShadowImage for z/OS Components
System using ShadowImage for z/OS usually contains the following
components.
– Pair of volumes (S-VOL and T-VOL)
– Licensed ShadowImage for z/OS program product
Figure 2-1 shows a typical ShadowImage for z/OS configuration using Storage
Navigator.
Host
Storage Navigator Computer
SIz
program product
USP V subsystem
SVP
(Web Server)
S-VOL
Copy
T-VOL
T-VOL
T-VOL
SIz pairs
Figure 2-1 ShadowImage for z/OS Components
You operate ShadowImage for z/OS from the Storage Navigator computer, and
copy volumes in the storage system. A volume that has original data is called
an S-VOL (source volume), and a volume to which the data is copied is called
a T-VOL (target volume). A pair of the S-VOL and the T-VOL made by
ShadowImage for z/OS is called an “SIz pair”.