Migrating a Mobile Storage Unit is a new feature that helps to migrate a Mobile Storage Unit (MSU) from one DDR to another. When you initiate the migration, the Migration and Placement Service provides the recommended list of DDRs from the available list of DDRs in the Data Center. Based on that list, you can select the target system and initiate the migration. You can select which Network Group to use, and can select from the following migration priorities:

1. Balanced transfer – Resources are balanced between the backup and the migration

2. Fast transfer – More resources will be allotted for migration
3. Minimum system impact transfer – Fewer resources will be allocated for migration

You must now start the migration immediately. When the migration is initiated, you can view the status. When the migration job reaches 100%, it is ready to commit. All the operations (backup or restore) to the source MSU need to be canceled or stopped before committing the migration.

There are two options available for the source MSU: you can either mark the MSU to be deleted after a successful migration or you can keep the MSU on the source system. When the commit is done, the remaining data that needs to be synced with the target DDR will be updated. The source MSU is marked as read only; the target MSU is marked as read write. The source MSU is demoted to an Mtree and target system has a new MSU with the same name. The Migration and Placement Service in PowerProtect DD Management Center updates the Namespace Redirection Service Data Manager (NRSDM) about the new location of the MSU. NRSDM then provides that information to the NRS.

When a boost client now requests the physical location of the MSU to write the data, NRS provides the target DDR’s IP address.