HP StorageWorks XP Remote Web Console Software - Manual (Page 83)

NOTE: YKRESYNC is a command for re-establishing a copy pair.
a. If reversing of the copy direction fails (as illustrated in the upper-right picture in
Figure 38 (page 83) ), create a URz pair. Ensure that the primary data volume of the pair
is a volume in the TCz Synchronous secondary site, and that the secondary data volume
of the pair is a volume in URz secondary site. To create this URz pair, use Business
Continuity Manager to execute YKMAKE command on the journal group corresponding
to the pair.
b. If reversing of the copy direction ends successfully (as illustrated in the lower-right picture
in
Figure 38 (page 83) ), re-create the URz pair that was removed in step 1 of this
procedure. To re-create this pair, use Business Continuity Manager to execute YKMAKE
command on the journal group corresponding to the pair.
After the pair is recreated, the system configuration changes from 3DC multi-target
configuration to 3DC cascading configuration. Also, the former TCz Synchronous
secondary volume changes to the primary volume.
NOTE: YKMAKE is a command for establishing a copy pair.
Notes:
•
If you followed the instructions in step (a) above and you want to transfer your business
tasks back to the primary site, you need to remove failures from the primary site and other
locations. After that, you need to change the system into 3DC multi-target configuration
as explained in
“Changing to 3DC Multi-target Configuration after Recovering from
Primary Site Failures” (page 85) , and then follow the operation procedure explained in
“Transferring Business Tasks from TCz Secondary Site to the Primary Site” (page 86) .
•
If you followed the instruction in step (b) above and you want to transfer your business
tasks back to the primary site, you need to remove failures from the primary site and other
locations, and then follow the operation procedure explained in
“Transferring Business
Tasks from TCz Secondary Site to the Primary Site” (page 86) .
Figure 38 Recovering from Failures in the Primary Site
To change the system into 3DC multi-target configuration:
Combining URz with Other Data Management Operations 83