Name
Type
Description
Mandatory
Default
rpo
Positive integer
Mirror Recovery
Point Objective
value for Master.
Ranges from 30 to
86400 seconds (i.e.,
up to 24 hours)
Applies and
mandatory to
asynchronous
mirroring only.
N
[None]
remote_rpo
Positive integer
Mirror Recovery
Point Objective
value when remote
peer becomes
Master
Applies and
mandatory to
asynchronous
mirroring only.
N
[Master RPO]
schedule
Object name
A reference to a
schedule object
Applies and
mandatory to
asynchronous
mirroring only.
N
[None]
remote_
schedule
Object name
A reference to a
schedule object on
the remote
machine.
Applies and
mandatory to
asynchronous
mirroring only.
N
[None]
init_type
Enumeration
Specifies the
method requested
to initialize the
Slave mirror.
N
[none]
Mirroring is the process of ensuring that both peers contain identical data at all
times. This command defines a new mirroring coupling between a master and a
slave peers.
The command supports the creation of an asynchronous mirroring coupling.
Asynchronous mirroring is based on schedule-driven replication. The system also
offers a predefined schedule object with a non-user-configurable interval of 20
seconds, named min_interval.
Creating a mirroring coupling, an existing master peer is specified together with a
slave peer. Upon creation the coupling is not active and the user needs to activate
it explicitly in order to start the replication. This slave either already exists or it is
created by this command. Using an existing slave is allowed only if it is formatted.
If the slave already exists, the command receives its name along with the remote
system name. If it is created by this command, the input parameters specify the
remote storage system name, the name of the slave that is created and the Storage
Pool that will contain the newly created slave.
Chapter 11. Remote Mirroring
215
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