Recovery with business copy configuration – HP XP P9500 Storage User Manual
Page 102
3.
After the new Continuous Access Synchronous pair is in PAIR status, stop host operations at
the remote site, then release the Continuous Access Synchronous pair.
4.
On the intermediate site, create a Continuous Access Journal pair to the Continuous Access
Journal remote site, with no data copying (specify None on the Copy Mode option). Specify
the intermediate site volume as the Continuous Access Journal P-VOL and the remote volume
as the Continuous Access Journal S-VOL.
5.
On the primary site, create a Continuous Access Synchronous pair between the primary site
data volume and the intermediate site Continuous Access Journal P-VOL, with no data copying.
When this is done, since host operations have not resumed, all three sites have the same data
in their respective volumes.
6.
Resume business tasks at the primary site. Synchronous copying will resume between the
primary site Continuous Access Synchronous P-VOL and the intermediate site S-VOL. Continuous
Access Journal copying will resume from intermediate site to remote site.
Recovery with Business Copy configuration
If disaster or failure occurs at the primary site where the Business Copy secondary volume is shared
with the Continuous Access Journal primary volume on the local site, you can continue business
operations using the remote Continuous Access Journal secondary volume, and then restore data
and business operations back to the primary site. Proceed as follows using RAID Manager:
1.
Release the Business Copy pair using the pairsplit -S command.
2.
Reverse the copy direction and resync the Continuous Access Journal pair using the
horctakeover command.
3.
Reverse the copy direction again on the Continuous Access Journal pair using the horctakeover
command.
4.
Split the Continuous Access Journal pair using the pairsplit -r command.
5.
Create a Business Copy pair from the Business Copy S-VOL to perform copying in the reverse
direction. Use the paircreate command.
6.
Release the Business Copy pair using the pairsplit -S command.
7.
Re-create the original Business Copy pair from the original Business Copy P-VOL to perform
copying in the original direction. Use the paircreate command.
8.
Split the Business Copy pair using the pairsplit -r command.
9.
Resynchronize the Continuous Access Journal pair using the pairresync command.
102 Disaster recovery operations