Coercivity Levels of Tape Media What is Coercivity? Coercivity is the resistance of the particles to having their position changed. As tape capacities increase, the bits get more tightly packed and the magnetic forces between them become more intense. Capacities for tape increase as manufacturers develop new materials and compounds that allow tapes to have higher coercivity levels. This allows for better magnetic properties which means more storage capacity. Degaussing This increased coercivity that allows for greater storage capacity also means that it will take more degaussing strength to destroy this data when the tapes. If you are handling tape degaussing on your own, PLEASE make sure that your degausser meets or exceeds the coercivity level of the tape formats you are working with: 9-Track Reel-to-Reel 300 Oe TK50, TK70 350 Oe 3480, 3490E 520 Oe SLR1, SLR2, TR-1,DC2120, DC6150, DC6525 550 Oe SLR3, SLR4, SLR5, TR-3,DC9100, DC9120, ID-1 900 Oe Mammoth 8mm, AIT-1 8mm,VXA-1 8mm 1320 Oe M2 Mammoth 2 8mm,VXA-2 8mm 230m 1350 Oe AIT-2 8mm, AIT-3 8mm 1382 Oe SAIT-1, SAIT-2 1400 Oe Redwood SD-3 1515 Oe DLTtape III, DLTtape IIIXT 1540 Oe DD-2 19mm 1550 Oe DTF-1 1579 Oe DDS1: 4mm 60m, 4mm 90m 1590 Oe D8: 8mm 112m, 8mm 160m, 1600 Oe DDS2 4mm 120m 1750 Oe AIT-4 8mm 1759 Oe DD-2 QD (Quad Density) 19mm 1850 Oe DLTtape IV, DLTtape VS1, NCTP 1850 Oe SuperDLTtape I 1900 Oe DDS3 4mm 125m 2250 Oe DTF-2 2300 Oe DDS4 4mm 150m, DAT-72 4mm 170m 2350 Oe DAT-160 (DDS-6) 2387 Oe SuperDLTtape II 2600 Oe DLTtape S4 2650 Oe SLR24, SLR32, TR-4 900 Oe ADR-30, ADR50, ADR2-120 900 Oe Magstar MP: 3570-B,3570-C, 3570-C/XL 1625 Oe Magstar: 3590, 3590E 1625 Oe 9840, T9940 1625 Oe TR-5, TR-7 (Travan 40GB) 1650 Oe SLR40, SLR50, SLR60,SLR75, SLR100, SLR140 1650 Oe LTO-Ultrium 1 1850 Oe LTO-Ultrium 2 2150 Oe Enterprise 3592,T10000 (T10K) 2500 Oe LTO-Ultrium 3 2600 Oe LTO-Ultrium 4 2710 Oe LTO-Ultrium 5 2700 Oe LTO-Ultrium 6 (MP) 2850 Oe LTO-Ultrium 6 (BaFe) 2280 Oe LTO-Ultrium 7 2850 Oe