HP XP Continuous Access Software - Manual (Page 165)

at) the secondary site, using secondary data volumes. For more information about using XP RAID
Manager, see the HP StorageWorks XP RAID Manager user guide.
Transferring operations back to the primary site
After the disaster recovery procedure finishes 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 procedures explains how to
use XP RAID Manager to copy data from the secondary site to the primary site.
1. Restore the primary array and remote copy connections, bring up the host servers at the
primary site, and ensure that all XP Continuous Access Journal components are fully operational.
2. At the primary site, locate primary data volumes whose pair status is COPY or PAIR, and
locate the corresponding secondary data volumes whose pair status is SSWS. 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 SMPL, and locate
the corresponding secondary data volumes whose pair status is SMPL. If such volume pairs
are found, issue a request for deleting the pairs to the primary data volumes.
4. At the primary site, locate data volume pairs whose pair status is SMPL, and issue a request
for deleting the pairs to the secondary data volumes.
5. Execute the pairresync -swaps command on secondary data volumes whose pair status
is SSWS ( pairresync is the XP RAID Manager command for resynchronizing pair and
-swaps is a swap option). This reverses primary and secondary data volumes to resynchronize
pairs.
CAUTION: When executing the pairresync -swaps command, use the -d option to
specify a data volume. However, if the restore journal group where the data volume belongs
is in Active, Halting, or Stopping status, the
pairresync -swaps command is rejected. For
more information about journal group status, see Displaying detailed information about journal
groups .
6. Create pairs, specifying secondary data volumes whose pair status is SMPL as primary data
volumes. This creates pairs in which primary and secondary data volumes are reversed.
7. Verify that pair status of all secondary data volumes (which were originally primary data
volumes) changes from COPY to PAIR. If the pair status is changed to PAIR, initial copy
operations are finished and consistency is maintained.
This procedure enables copying of data from the secondary site to the primary site. Data in the
secondary site is applied on the primary site.
For more information about using XP RAID Manager, see the HP StorageWorks XP RAID Manager
user guide.
For more information about status of data volumes, see XP Continuous Access Journal data volume
pair status .
Resuming normal operations at the primary site
After the XP Continuous Access Journal volume pairs have been established in the reverse direction,
you are ready to resume normal operations at the primary site. The following procedure explains
how to use XP RAID Manager to resume normal operations at the primary site. Remember that the
XP Continuous Access Journal terminology is now reversed: the original primary data volumes are
now secondary data volumes, and the original secondary data volumes are now primary data
volumes.
1. At the primary and secondary sites, ensure that all XP Continuous Access Journal components
are fully operational and are free from failures.
Transferring operations back to the primary site 165