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Chapter 3 Preparing for Universal Replicator z/OS Operations 3-43
Hitachi Universal Replicator for IBM /OS User’s Guide
8. Specify the TCz Synchronous R-VOL in TCz Synchronous secondary site as
the primary data volume, and specify the secondary data volume in URz
secondary site as the secondary data volume to create the URz pair for
delta resync operation.
Select any mirror ID from 1 to 3 except the one used in step
4.
Note: If you release the TCz Synchronous pair that is created in step
2, the
URz pair created in step
8 will be released as well. In addition, if you release
the URz pair created in step
4, the secondary data volume of the URz pair
created in step
8 will be deleted. In this case, you can only perform deleting
operation on the remaining primary data volume.
For detailed information about installing and using TCz Synchronous, please
refer to the TrueCopy for IBM z/OS User's Guide.
For detailed information about URz journal group configuration, see section
Journal Group Operations. For detailed information about port configuration,
see section
Configuring Port Attributes.
Requirements for Creating URz Pair for Delta Resync Operation
To create a URz pair for delta resync operation, the followings are required.
• Create the pair in 3DC multi-target configuration
• Use TCz Synchronous R-VOL in Duplex status as the primary data volume
• Use URz data volume in Duplex status as the secondary data volume
• Use the mirror ID from 1 to 3 that is not used by the secondary data
volume
• Fulfill the conditions to combine URz with other functions in Table 3-11
• The system option mode 506 must be set to ON at all site
In addition to the abovementioned requirements, all URz pairs in the journal
group must satisfy the following requirements when you create more than one
URz pair for delta resync operation.
• Use the same mirror ID for all pairs
• Use the same restore journal group for all pairs
Requirements for Performing Delta Resync Operation
To perform delta resync operation properly, you need to specify a URz pair
that belongs to the journal group whose URz pairs meet the following
requirements. Note that if any URz pair in the journal group does not meet the
requirements, an error occurs even if the specified URz pair meets the
requirements.