You can backup MatrixStore data into deep archive systems by means of two applications. Both make use of Move2 service that is able to communicate to tape libraries and S3 systems and send data to them.
You can select files or folders from within DropSpot and right-click "Archive to Deep Archive"
You can configure move2 to watch MatrixStore vaults and send data older than a certain age to deep archive.
You can trigger archive jobs for move2 from Vision