Dell DDS4 340-8227, 20/40GB Data Cartridge The Dell DDS4 340-8224 is an amazingly reliable and efficient technology for high-volume data backup and archiving efforts. Featuring 20 GB of native data storage and 40 GB of compressed data storage, the DDS 4 Dell is perfect for regularly archiving large amounts of data. The Dell DDS-4 20/40 also provides a native data transfer rate of 2.75 MB/second and 9.9 GB/hour, which makes for quick data backups and information recall. Dell data cartridges, including the DDS 4, have been developed utilizing the highest quality of materials and technologies available. All Dell products are rigorously tested to meet Dell's high quality standards. The Dell DDS4 tape cartridge is developed to last for years.