HP StorageWorks XP Remote Web Console Software - Manual (Page 76)

◦ The XP storage system must have a URz master journal volume.
◦ Storage system settings must be made so that Business Continuity Manager can be used.
For detailed information about settings required for using volumes in a remote site, see
the HP StorageWorks XP for Business Continuity Manager Software User's Guide.
•
Remote site
The XP storage system must have URz installed. ◦
◦ The XP storage system must have a URz secondary data volume.
◦ The XP storage system must have a URz restore journal volume.
◦ Storage system settings must be made so that Business Continuity Manager can be used.
For detailed information about settings required for using volumes in a remote site, see
the HP StorageWorks XP for Business Continuity Manager Software User's Guide.
Setup Procedure
This section explains the procedure for setting up a 3DC cascading configuration using TCz
Synchronous and URz.
To set up a 3DC cascading configuration:
1. Install TCz Synchronous and URz. Configure ports and journal groups.
2. Issue a request for creating a TCz Synchronous pair to the primary subsystem MCU where
TCz Synchronous is installed.
3. Wait until the status of the TCz Synchronous pair becomes Duplex.
4. Issue a request for creating a URz pair to the MCU where URz is installed.
When creating a URz pair, be sure to select a value from 1 to 3 as the mirror ID.
5. Wait until the status of the URz pair becomes Duplex.
You must ensure that the TCz Synchronous pair status changes to Duplex before the URz pair status
changes to Duplex. If you have made a request for changing the URz pair status to Duplex before
the TCz Synchronous pair status changes to Duplex, the request will be rejected.
For detailed information about installing and using TCz Synchronous, see the Hitachi
ShadowImage™ for Mainframe User's Guide: HP XP24000 Disk Array, HP XP20000 Disk Array.
For detailed information about URz journal group configuration, see
Journal Group Operations .
For detailed information about port configuration, see “Configuring Port Attributes” (page 99) .
Disaster Recovery in a 3DC Cascading Configuration
If a disaster or failure occurs in the primary site in a 3DC cascading configuration, you can use
TCz secondary volumes in the intermediate site to enable the intermediate site to take over your
business tasks. If a disaster or failure occurs in the primary site, first you must transfer your business
tasks from the primary site to the intermediate site.
To transfer your business tasks to the secondary site:
1. Check consistency of the TCz Synchronous R-VOL in the secondary site.
2. Use Business Continuity Manager to execute the YKSUSPND REVERSE command onto the copy
groups that will make a TCz Synchronous pair between the primary site and the intermediate
site.
3. Use the TCz Synchronous R-VOL in the intermediate site to resume your business tasks.
4. Use Business Continuity Manager to execute the YKRESYNC REVERSE command onto the copy
groups that will make a TCz Synchronous pair between the primary site and the intermediate
site. This operation reverses the copy direction.
For detailed information about how to use Business Continuity Manager, see the HP StorageWorks
XP for Business Continuity Manager Software User's Guide.
76 Requirements and Restrictions for Universal Replicator z/OS Operations