Software Instruction Manual

Table 2 Remote Copy, SAN/iQ, and storage systems
Remote Copy configurationStorage system level
Management groups
• Create remote snapshots in the same management
group or in a different management group than the
primary volume.
• If using different management groups, the remote
bandwidth setting of the management group containing
the remote volume determines the maximum rate of data
transfer to the remote snapshot.
• Event notification tells you when copies complete or fail.
It also notifies you if a remote volume or snapshot is
made primary or if the status of the connection between
management groups containing primary and remote
volumes changes.
• Create remote snapshots in the same cluster or in a
cluster different from the primary volume.
Clusters
Volumes
• Primary volumes contain the data to be copied to the
remote snapshot.
• Data is copied to the remote snapshot via the remote
volume.
• The remote volume is a pointer to the remote snapshot.
The remote volume has a size of 0 bytes.
• After data is copied from the primary snapshot to the
remote snapshot, the remote snapshot behaves as a
regular snapshot.
Snapshots
Planning the remote snapshot
Prerequisites for creating a remote snapshot
• Log in to both the management group that contains the primary volume and the management
group that contains the target cluster where the remote snapshot will be created.
• Designate or create a remote volume in that remote management group.
• Ensure there is enough space on the target cluster for the remote snapshot.
Logging in to primary and remote management groups
Log in to both the primary and the remote management groups before you begin, or you must log
in to the remote management group while creating a remote copy.
Designating or creating the remote volume
Create a remote volume by using any of the following methods:
• Make an existing volume into a remote volume.
• Create a new remote volume while creating a remote snapshot.
• Create a new volume from the cluster Details tab window, and then select the Remote radio
button on the Advanced tab of the New Volume window.
From the menu bar, select Tasks→Volume→New Volume.
For more information about these methods of creating remote volumes, see “Creating a remote
volume” (page 15).
8 Understanding and planning Remote Copy