The high areal recording density of DAT72 results from Sony's outstanding dual-layer coating and helical scan technologies. Each miniscule cartridge brings you huge data storage capacity of up to 36GB native or 72GB compressed. The Sony DAT72 Cartridge (DGDAT72) is verified and qualified by Hewlett-Packard DAT72 licensing program to assure rigid media-performance under DAT72 drive.Sony DAT72 media features a dual-layer coating comprising an ultra-thin magnetic layer and a nonmagnetic layer. The ultra-thin magnetic layer raises output and reduces noise even in the high frequency range essential for high-density recording. The nonmagnetic layer creates a smooth surface to support tape travel stability and durability. Sony's original coating technology makes possible a magnetic layer of 0.15m or less, one of the thinnest in its class. Under severe conditions simulating actual use, Sony DAT72 media maintains an extremely stable low error rate to assure outstanding reliability.