1. A computer program product for processing a migration request, the computer program product comprising a computer readable storage medium having computer readable program code embodied therein that executes to perform operations, the operations comprising: processing a migration request to migrate metadata and storage management of data in a first storage environment to a second storage environment, wherein the first storage environment has a first storage server, a first storage media, and first metadata describing first data objects stored in the first storage media, and wherein the second storage environment has a second storage server, a second storage media, and second metadata for second data objects stored in the second storage media; copying the first metadata to the second storage environment to incorporate with the second metadata; modifying the first metadata incorporated into the second metadata to indicate first server information used by the second server to communicate with the first server to access the migrated data from the first storage media; and completing the migration request in response to incorporating the first metadata into the second metadata, wherein the first data objects remain in the first storage media after completing the migration request, and wherein the first data objects are copied to the second storage media after completing the migration request.