Category: reverse polarity

Proton Data Security Blog

What is Reverse Polarity

What is Reverse Polarity
T-4 REVERSE POLARITY We know that data is stored magnetically on hard disk drives (see Figure 1 ) and that is why degaussing works. But sometimes a magnetic field in one direction may not be strong enough to degauss a high density hard disk and a reverse polarity field is necessary. The T-4 uses patented [...] Read More

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