HP 3PAR Operating System Software - Manual (Page 78)

volume groups on the new primary system (for example, System2) and copy them to the new
backup system (for example, System1).
•
If a unidirectional 1-to-1 configuration is not yet set up, follow the steps in “Setting Up a
Unidirectional Configuration” (page 67) to set up the first primary system (for example,
System1).
Creating Volume Groups for Bidirectional Remote Copy
1. Verify that the virtual volumes you plan to replicate from the new primary system to the new
backup already exist. For more information, see
“Verifying Virtual Volumes Are Created for
Remote Copy” (page 71) .
2. On the new primary system (for example, System2), create a primary volume group:
NOTE: You can create groups and add volumes to groups without disrupting host access
to volumes.
# creatercopygroup :
•
- Name of the primary volume group (for example, Group2)
•
- Name of the target system (for example, System1)
•
- sync for synchronous mode or periodic for asynchronous periodic mode
The creatercopygroup command:
•
Creates a primary volume group (Group2) on the primary system (the system on which
you issue the command; for example, System2)
•
Creates a name for the corresponding secondary volume group using the convention:
.r (of the primary system)
Therefore, in this example, the secondary volume group is named Group2.r125.
•
Creates the corresponding secondary volume group (Group2.r125) on the target system
(in this case, the backup system System1).
Solution Problem
Ensure links are up on both systems and try the
command again. For more information, see
“Checking
the Links between Systems” (page 70) .
If the backup system does not respond to a command
after 5 minutes (the timeout limit), an error message
appears:
target system could not be
contacted
3. (Optional). If you are creating a volume group that uses periodic mode, you can set up
automatic synchronization.
CAUTION: Do not set a resynchronization period at this point if you plan to perform the
initial synchronization and backup using tape. For more information, see “Using Tape for
Initial Synchronization and Backup” (page 82) .
To specify a resynchronization period for a primary volume group, on the primary system (for
example, System2) enter either:
# setrcopygroup period s|m|h|d
78 Setting Up a Bidirectional Configuration