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1 .

On a scale from 1 (never heard of) to 7 (extremely familiar), please rate how familiar you are with each type.

By familiarity, we mean how often you have come across it. The more you know about the kind of drive, the higher you would rate it. The less you know about it, the lower you would rate it. If you have never heard of them before, select 1 (never heard of).