User's Guide

The migration process selects objects to migrate using the following rules:
• Host—When selecting a single host or group of hosts with volume presentations, all the volumes
presented to the host(s) are migrated. In addition, any presentations the source volumes have
to other hosts will include those hosts and all of their presented volumes in the migration.
• Presented volumes—When selecting a volume or group of volumes with host presentations,
the selected volumes and the hosts to which they are presented are migrated. In addition, any
presentations the source hosts have with other volumes will include those volumes in the
migration.
• Unpresented volumes—Only the selected unpresented volumes are migrated. The offline
migration type is the only type available for unpresented volume migration.
NOTE: For more information about supported and unsupported configurations and about the
implicit selection of objects for migration, see “Migrations Supported by HP 3PAR Online Import
Utility for EMC Storage” (page 24).
EMC to HP 3PAR Migration Process
The process to migrate EMC Storage volumes to HP 3PAR StoreServ Storage system consists of
three parts:
• Premigration—Work done to define the source and destination storage system to a migration
definition. This work is not repeated when migrating a second host or additional volumes after
a first migration.
• Migration—Creating and executing the migration. Migration includes the process of unzoning
the destination storage system from the source storage system and removing the source storage
system after the migration is complete. This work is repeated for every migration.
• Post-migration—Removal of the online import setup.
8 Overview of HP 3PAR Online Import for EMC Storage