ShadowImage for Mainframe operations in a 3DC cascade configuration

ShadowImage for Mainframe User Guide for VSP One Block 85

Version
10.5.x
Audience
anonymous
Part Number
MK-26VSP1B035-02
ft:lastEdition
2026-05-04

You can perform ShadowImage for Mainframe operations when ShadowImage for Mainframe and Universal Replicator for Mainframe are used in a 3DC cascade configuration.

The following tables specify whether SIz operations can be performed when URz volumes are shared with SIz volumes in a 3DC cascade configuration.

Table. 3DC cascade: Sharing a URz P-VOL with an SIz P-VOL on the primary storage system
URz pair status (P-VOL) ShadowImage for Mainframe operation
Create pair Split pair Suspend pair Release pair Resync pair
Normal copy Quick resync Reverse Quick restore
PAIR YES YES YES YES YES YES NO NO
COPY YES YES YES YES YES YES NO NO
PSUS/SSUS/PSUE YES YES YES YES YES YES YES NO
Table. 3DC cascade: Sharing a URz P-VOL with an SIz S-VOL on the primary storage system
URz pair status (P-VOL) ShadowImage for Mainframe operation
Create pair Split pair Suspend pair Release pair Resync pair
Normal copy Quick resync Reverse Quick restore
PAIR NO NO YES YES NO NO NO NO
COPY NO NO YES YES NO NO NO NO
PSUS/SSUS/PSUE NO YES YES YES YES YES YES NO
Table. 3DC cascade: Sharing a URz S-VOL or P-VOL with an SIz P-VOL on the intermediate storage system
URz pair status (S-VOL) URz pair status (P-VOL) ShadowImage for Mainframe operation
Create pair Split pair Suspend pair Release pair Resync pair
Normal copy Quick resync Reverse Quick restore
PAIR PAIR YES YES YES YES YES YES NO NO
COPY YES YES YES YES YES YES NO NO
PSUS/SSUS/PSUE YES YES YES YES YES YES NO NO
COPY COPY YES YES YES YES YES YES NO NO
PSUS/SSUS/PSUE YES YES YES YES YES YES NO NO
PSUS/SSUS/PSUE PSUS/SSUS/PSUE YES YES YES YES YES YES YES NO
Table. 3DC cascade: Sharing a URz S-VOL with an SIz P-VOL on the secondary storage system
URz pair status (S-VOL) ShadowImage for Mainframe operation
Create pair Split pair Suspend pair Release pair Resync pair
Normal copy Quick resync Reverse Quick restore
PAIR YES YES YES YES YES YES NO NO
COPY YES YES YES YES YES YES NO NO
PSUS/SSUS/PSUE YES YES YES YES YES YES YES NO