HP StorageWorks XP Remote Web Console Software User Manual
Page 224
1.
Check the consistency of the TrueCopy for Mainframe 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 TrueCopy for Mainframe Synchronous pair between the primary site
and the intermediate site.
3.
Use the TrueCopy for Mainframe 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 TrueCopy for Mainframe 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 XP for Business
Continuity Manager Software User's Guide.
When a disaster or failure occurs, the above procedure enables you to resume your business tasks
by using TrueCopy for Mainframe Synchronous M-VOLs in the intermediate site. The TrueCopy for
Mainframe Synchronous M-VOLs in the intermediate site will contain the same data that are stored
in the TrueCopy for Mainframe Synchronous M-VOLs in the primary (main) site.
For detailed information about copy status in Business Continuity Manager, see the HP XP for
Business Continuity Manager Software User's Guide.
Recovering from a Disaster at the Main Site in a 3DC Multi-Target Configuration
If a disaster or failure occurs only in the primary site in a 3DC multi-target system, you can use the
secondary volume in the TrueCopy for Mainframe Synchronous secondary site to enable the
secondary site to take over your business tasks. After transferring your business tasks to the
secondary site, you need to remove the failure from the primary site, so that you will be able to
transfer your business tasks back to the primary site.
To transfer your business tasks to the TrueCopy for Mainframe Synchronous secondary site, follow
the procedure below. Business Continuity Manager is used in this procedure.
1.
Use Business Continuity Manager to execute the YKRECVER command on the journal group
corresponding to the Universal Replicator for Mainframe pair that exists between the primary
and the Universal Replicator for Mainframe secondary sites.
NOTE:
YKRECVER is a command that requests releasing of a pair to the secondary data
volume.
2.
Use Business Continuity Manager to execute the YKSUSPND REVERSE command on the
TrueCopy for Mainframe Synchronous pair.
NOTE:
YKSUSPND is a command for splitting a pair and stopping the copy operation
temporarily.
3.
Use the TrueCopy for Mainframe Synchronous remote volume to resume your business tasks.
4.
Use Business Continuity Manager to execute the YKRESYNC REVERSE command on the TrueCopy
for Mainframe Synchronous pair, in order to reverse the copy direction of the TrueCopy for
Mainframe pair.
NOTE:
YKRESYNC is a command for re-establishing a pair.
a.
If reversing of the copy direction fails (as illustrated in the upper-right picture in
from Failures in the Primary Site” (page 225)
), create a Universal Replicator for Mainframe
pair. Ensure that the primary data volume of the pair is a volume in the TrueCopy for
Mainframe Synchronous secondary site, and that the secondary data volume of the pair
is a volume in Universal Replicator for Mainframe secondary site. To create this Universal
224 Usage Scenarios