Recovering from primary site disaster in a 3dc, Recovering from – HP StorageWorks XP Remote Web Console Software User Manual
Page 210
1.
Check the consistency of the XP Continuous Access Synchronous S-VOL in the intermediate
site.
2.
Use RAID Manager to execute the horctakeover command on the XP Continuous Access
Synchronous pair that exists between the primary site and the intermediate site.
3.
Wait until the XP Continuous Access Synchronous S-VOL in the intermediate site becomes
suspended (in SSWS status) or changes to an XP Continuous Access Synchronous P-VOL.
After the S-VOL becomes suspended or changes to a P-VOL, you can use the volume to resume
your business tasks.
For detailed information about how to use RAID Manager, see the HP StorageWorks RAID Manager
User Guide.
When a disaster or failure occurs, the above procedure allows you to resume your business tasks
by using the XP Continuous Access Synchronous volume at the intermediate site. The XP Continuous
Access Synchronous volume at the intermediate site will contain the same data that is stored in the
XP Continuous Access Synchronous P-VOL at the primary site.
For detailed information about the pair status of data volumes, see
Recovering from Primary Site Disaster 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 at the XP Continuous Access 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 can transfer your business tasks
back to the primary site.
To transfer your business tasks to the XP Continuous Access Synchronous secondary site, follow
the procedure described in this section. RAID Manager is used in this procedure.
1.
Use RAID Manager to release the XP Continuous Access Journal pair.
2.
Use RAID Manager to execute the horctakeover command on the XP Continuous Access
Synchronous pair.
3.
Use the XP Continuous Access Synchronous secondary volume to resume your business tasks.
4.
Check the execution result of the horctakeover command, and then do one of the following:
a.
If the primary/secondary relationship of the XP Continuous Access Synchronous pair is
not reversed (that is, the copy direction is not reversed as illustrated in the upper-right of
“Recovery from a Disaster in the Primary Site” (page 211)
), use RAID Manager to create
an XP Continuous Access Journal pair. The primary data volume of the XP Continuous
Access Journal pair must be the XP Continuous Access Synchronous secondary volume.
The secondary data volume of the XP Continuous Access Journal pair must be the
secondary data volume in the XP Continuous Access Journal secondary site.
b.
If the primary/secondary relationship of the XP Continuous Access Synchronous pair is
reversed (that is, the copy direction is reversed as illustrated in the lower-right of
from a Disaster in the Primary Site” (page 211)
), re-create the XP Continuous Access Journal
pair that was released in step
of this procedure. When you finish re-creating the XP
Continuous Access Journal pair, the system configuration changes from 3DC multi-target
configuration to 3DC cascading configuration, and the former XP Continuous Access
Synchronous secondary volume changes to the primary volume.
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Performing Disaster Recovery Operations