Considerations: One of the major considerations that we face when performing file-based migrations is which tool is the best for the job. The answer to this question is not easy because it may take multiple tools to complete the job. Another consideration is the ability to streamline the data migration process.
Among the better known file migration tools that can address these considerations: Datadobi DobiMiner. For the last five years, I have recognized Datadobi for their CAS-to-NAS migration methodologies and their NAS-to-NAS migration tool, which is always evolving.