HP StorageWorks XP Remote Web Console Software - Manual (Page 85)

NOTE: In order to transfer business tasks back to the primary site, remove failures in the
primary site and other locations, and then follow the instructions in “Transferring Business
Tasks from TCz Secondary Site to the Primary Site” (page 88) .
Figure 39 Recovery from Disaster in the Primary Site (When Delta Resync Operation is
Performed)
Changing to 3DC Multi-target Configuration after Recovering from Primary Site Failures
If you follow the operation procedure in “Recovering from Failures in the Primary Site and the TCz
Synchronous Secondary Site” (page 90) and then the system does not change to 3DC cascading
configuration, you can change the system into 3DC multi-target configuration after removing failures
from the primary site and other locations, The resulting 3DC multi-target system uses the former
TCz secondary volume as a primary volume.
To change the system into 3DC multi-target configuration:
•
Use Business Continuity Manager to execute the YKDELETE command on the journal group
corresponding to the former URz pair.
•
If pair re-synchronization has not been performed to reverse the primary volume and the remote
volume of the TCz Synchronous pair (that is, if the pair is suspended), use Business Continuity
Manager to execute the YKRESYNC command, so that the copy direction of the TCz
Synchronous pair will be reversed.
Combining URz with Other Data Management Operations 85