Operating System Software Owner manual

1. Set up a volume group on the primary storage system (for example, System1):
# creatercopygroup <group_name> <target_name>:periodic
• <group_name> - Name of the volume group (for example, Group1)
• <target_name> - Name of the target system (for example, System2)
• periodic - Specifies asynchronous periodic mode
NOTE: N-to-1 configurations support only asynchronous periodic mode volume groups.
For more information, see “Volume Group Modes” (page 194).
The creatercopygroup command:
• Creates a primary volume group (Group1) on the primary system (System1).
• Creates a name for the corresponding secondary volume group using the convention:
<primary_group_name>.r<sys_ID> (of the primary system)
Therefore, in this example, the secondary volume group is named Group1.r112.
• Creates the corresponding secondary volume group (Group1.r112) on the target system
(in this case, the backup system System2).
SolutionProblem
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 <sys_name> could not be
contacted
2. (Optional). If you are not using tape to make the first copy of the data on the primary system,
you can set up automatic resynchronization.
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 synchronization period for a primary volume group, on the primary system (for
example, System1) enter either:
# setrcopygroup period <period_value>s|m|h|d <target_name> <group_name>
• <period_value>s|m|h|d - Synchronization period (time between start of
resynchronizations), followed by time unit: s (seconds), m (minutes), h (hours), or d (days)
• <target_name> - Name of the target system (for example, System2)
• <group_name> - Name of the primary volume group (for example, Group1)
or:
# setrcopygroup period <period_value>s|m|h|d <target_name> -pat <pattern>
Creating Remote Copy Volume Groups 51