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

About ShadowImage™ for IBM
®
z/OS
®
Operations 2-31
Hitachi ShadowImage™ for IBM
®
z/OS
®
User’s Guide
URz pair S-VOL
TCz pair M-VOL
URz pair P-VOL
Storage system 2 Storage system 1
Universal Re
p
licator for z/OS
ShadowImage for
z/OS
TCz pair R-VOL
TrueCopy for z/OS
Storage system 3
Cannot create
a pair
SIz
p
air T-VOL
Legend:
SIz S-VOL:
SIz T-VOL:
URz P-VOL:
URz S-VOL:
TCz M-VOL:
TCz R-VOL:
SIz source volume
SIz target volume
URz primary data volume
URz secondary data volume
TCz main volume
TCz remote volume
Figure 2-18 SIz, URz, and TCz: Shared S-VOL / S-VOL / M-VOL
The configuration shown in Figure 2-19 is an example of a volume functioning
as both a TCz R-VOL and a URz P-VOL. In this configuration, you cannot use
this volume as the S-VOL of an SIz pair.