Hitachi ShadowImage for z/OS user guide (HIT9503-96004, June 2006)

ShadowImage for z/OS user guide 111
• The case the T-VOL of the FlashCopy Mirror Version 2 pair and the T-VOL of the Siz pair is shared.
Figure 61 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 61. 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
Table 52 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 62.
•
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 FlashCopy® Mirror Version 2 Shared Volume
FlashCopy Mirror Version 2 TCz
M-VOL R-VOL
S-VOL OK OK*
T-VOL NO NO*
*Only TrueCopy for z/OS® Asynchronous (TCzA) can share its R-VOL with FlashCopy® Mirror Version
2 S-VOL.