Imation offers DAT 72 Data Cartridges to continue the legacy of the 4mm format. DAT 72 drives developed by HP and Certance address the growing needs small business users face to securely backup and protect their data. The DAT 72 format offers 72GB of compressed capacity (36GB native) and a 3MB/second transfer rate. DAT 72 Data Cartridges are designed exclusively for use in DAT 72 drives and libraries to provide 72GB compressed capacity.