Home > Storage > PowerMax and VMAX > Storage Admin > Dell PowerMax: Data Mobility Best Practices and Operational Guide > Migrating Metro Protected Source devices to PowerMax -Overview
With the PowerMax OS 10.1 and Management Software version 10.1 it is now possible for PowerMax storage administrators to migrate devices that are already protected with SRDF Metro.
The workflow for this operation is essentially the same as a standard migration with Metro based NDM as discussed in the previous section, however key changes in the microcode on the Target array make this feature possible, therefore is critical to ensure prior to migration that source and target arrays are running supported microcode to support the features. Any PowerMax 2500 or higher model array involved in the migration must be running PowerMax OS 10.1 (6079.225) or higher. Both source arrays (existing Metro arrays) must be on 5978.711.711 minimum plus ePack. See the SRDF and NDM Interfamily Connectivity Information Guide for details on ePack and the latest compatibility information.
There are three supported configurations where source devices are protected with SRDF/Metro outlined in the following figure.
The new mobility feature is built on existing NDM and SRDF technologies use similar workflow as NDM, same support for easy recovery of failed operations, same support for the easy cancellation of an ongoing migration
If you are migrating a Metro Session using a witness, there is a prerequisite to configure the Witnesses on the Target Array before performing migrations. Both Physical and Virtual witnesses are supported on the existing and the new Metro Sessions and the type of witness between the two can be different.