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Chapter 4 Functions of ReplicationControl
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To use ReplicationControl, the following operations can be selected.
y Direct operation for a disk array
This operation performs via FC directly a volume (MV or RV) connected to the server and recognized
by OS. This operation type is the most basic type when replication operation is performed by a
business server.
It is possible for the user to prepare a volume (IV is recommended) that can issue an I/O securely to a
disk array and operate it through the specific volume (control volume). The operation through the
control volume is effective especially in the backup server environment where even if the target
volume (RV) is connected, OS cannot access the volume by the replication operation and the like.
For the direct operation for a disk array, the logical disk of the target MV or RV needs to be registered
in the volume list in advance on the server where commands for the replication operation are
executed.
For details, refer to 4.2.1 “Direct Operation for a Disk Array”.
y Operations linked with the iSM (replication management function)
Installing ReplicationControl in the management server and linking it with the replication
management function of the iSM for operations enable you to manage and maintain the data
replication function and to construct the environment by commands.
The logical disk to be operated does not need to be connected to the server. Therefore, you do not
need to create the volume list.
Commands to create and display the volume list and commands to manage and operate disks, such as
to flush, mount, and unmount a file system, are functions to operate volumes of the system directly.
They are not used for operations linked with the iSM.
For details, refer to 4.2.2 “Operations Linked with iSM”.