Hitachi ShadowImage for z/OS user guide (HIT9503-96007, October 2007)

ShadowImage for z/OS user guide 119
• The case the T-VOL of the FlashCopy Mirror Version 2 pair and the T-VOL of the Siz pair is shared.
Figure 63 Cases When FlashCopy Mirror Version 2 and SIz Cannot be Used in Conjunction
When you use FlashCopy Mirror Version 2, you cannot create pairs sharing the volumes shown in
Figure 63. However, if you use ShadowImage for z/OS, you can create the pair which shares FlashCopy
Mirror Version 2 S-VOL and SIz T-VOL, or the pair which shares FlashCopy Mirror Version 2 T-VOL and SIz
Combining Compatible Mirroring for IBM® FlashCopy® Version 2 With TrueCopy for z/OS®
Volumes that can be shared
The following table shows combination of the volumes when you use FlashCopy® Mirror Version 2 with
TCz.
Volumes that cannot be shared
The FlashCopy® Mirror Version 2 and TCz shared configuration is different from the IBM FlashCopy® and
PPRC shared configuration. For FlashCopy® Mirror Version 2 and TCz, you cannot create the following
pairs see Figure 64.
• A TCz pair that includes a volume functioning as both a FlashCopy® Mirror Version 2 T-VOL and a TCz M VOL.
• A TCz pair that includes a volume functioning as both a FlashCopy® Mirror Version 2 T-VOL and a TCz R VOL.
Table 52 Whether FlashCopy® Mirror Version 2 Volume Can be Used as TCz Volume
FlashCopy Mirror Version 2 TCz
M-VOL R-VOL
S-VOL OK OK*
T-VOL OK NO*
*Only TrueCopy for z/OS® Asynchronous (TCzA) can share its R-VOL with FlashCopy® Mirror Version
2 S-VOL.