RDX cartridges are durable, small, and like tape cartridges, can be stored off-site for disaster recovery protection. RDX also provides the same easy expandability as tape. When you reach capacity with one removable disk cartridge, you can manage the RDX drive information by either writing over the old data, or ejecting the full cartridge and inserting a one. RDX removable drive cartridges can also be an alternative to DVD disks. Archiving capacities greater than 10 GB require multiple DVD disks which means more handling and shelf space are needed. A single 500 GB RDX drive cartridge, for example, can store more data than 50 standard DVDs.