Can Lifecycle replace Disk Staging in D-D-T Architecture?

In the case of Disk Staging solution, I’d have to use NDMP to dump data to the tape. However, the problem with that is losing the ability of recovering in granular file level.

To avoid the problem, I am thinking the solution of using Lifecycle policy, as I understand, it is not NDMP based, so, I can recover data in file level.

Please correct me if there is anything conceptually incorrect. If what I am thinking here is correct, can I use Lifecycle to replace Disk Staging in D-D-T architecture?

I’d appreciate your advices very much!