HP 3PAR Peer Motion Guide

Migrating Data
To use the Migrate Data wizard, the following conditions are required:
• Super user role
• Peer Motion license on the destination system
• Any Peer Motion configuration that includes a source and destination system whose status is
Normal and that has no admitted or importing volumes.
Perform the following tasks before using the wizard:
• Configure the data migration process by using the Create PM Configuration wizard.
• Copy the desired settings from the source system to the destination system using the Copy
Storage Settings and Configurations wizard.
• Determine the best time to do the data migration. (A period of low usage is best, as migration
incurs I/O latency.)
The Migrate Data wizard guides you in migrating volumes from the source system to the destination
system. The types of migration are as follows:
• Online (default) – Used to migrate virtual volumes that are exported to a host. Online migration
of Windows clusters requires creating NPIV ports on the peer ports. Online migration supports
the migration of all volumes, a subset of volumes, or a single virtual volume. Migrating a single
volume or a subset of volumes is called Single Virtual Volume Migration. With Single Virtual
Volume Migration, the host and source systems remain zoned. Migrating all volumes requires
unzoning the host system from the source system.
The following conditions are required to use online Single Virtual Volume Migration:
◦ Both source and destination arrays should be running HP 3PAR OS 3.1.3.
◦ Volumes to be migrated cannot be attached to a Remote Copy relationship.
◦ The host(s) to which the volumes are exported to must be defined using an ALUA persona
on both source and destination arrays.
If any of these requirements are not met, the migration type will require the migration of all
volumes.
• Minimally Disruptive Migration – Used to migrate virtual volumes that are exported to a host.
This migration type requires shutting down the host system for a short period of time. The
destination system must be running HP 3PAR OS version 3.1.2 or later.
• Offline – Used to migrate virtual volumes that are not exported to a host. Exported volumes
that you want to migrate must first be unexported to use offline migration. No unzoning or
system shutdown is required.
26 Using Peer Motion in HP 3PAR Management Console Manager