HP StorageWorks XP Remote Web Console Software - Manual (Page 277)

Chapter 10 Usage Scenarios 10-5
Hitachi Universal Replicator for IBM /OS User’s Guide
6. If the YKSUSPND command finishes successfully and the splitting ends
successfully, you can resume business tasks (i.e., you can start business
applications) by using secondary data volumes in the secondary site. Also,
if the primary storage system, the secondary storage system, and remote
copy connections are free from failure and fully operational, the restoring
of the pair will finish successfully, and then copying of data from the
secondary site to the primary site will start.
For detailed information about how to use Business Continuity Manager and
about pair status in Business Continuity Manager, please refer to Business
Continuity Manager User's Guide.
For detailed information about status of data volumes, refer to section Pair
Status.
Transferring Operations Back to the Primary Site
Once the disaster recovery procedure is finished and your business
applications are running at the secondary site, the next activity is to restore
the primary site and make arrangements for copying data from the secondary
site back to the primary site. The following procedure explains how to use
Business Continuity Manager to copy data from the secondary site to the
primary site:
1. Restore the primary storage system and remote copy connections, and
make sure that all URz components are fully operational.
2. At the primary site, locate primary data volumes whose pair status is
Pending duplex or Duplex, and then locate corresponding secondary
data volumes whose pair status is Suspend, which is equivalent to
SWAPPING in Business Continuity Manager terminology. If such volume
pairs are found, issue a request for splitting the pairs to the primary data
volumes.
3. At the primary site, locate primary data volumes whose pair status is not
Simplex, and then locate corresponding secondary data volumes whose
pair status is Simplex. If such volume pairs are found, issue a request for
releasing the pairs to the primary data volumes.
4. At the primary site, locate data volume pairs whose pair status is Simplex,
and then use Business Continuity Manager to execute YKRECVER on the
secondary data volume (YKRECVER is a command for releasing a pair).
5. Execute the YKRESYNC REVERSE option on secondary data volumes
whose pair status is Suspend, which is equivalent to SWAPPING in
Business Continuity Manager terminology (YKRESYNC is the Business
Continuity Manager command for resynchronizing pair). This reverses
primary data volumes and secondary data volumes to resynchronize pairs.
6. Create pairs, specifying secondary data volumes whose pair status is
Simplex as primary data volumes. This creates pairs in which primary data
volumes and secondary data volumes are reversed.