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Definition: hard drive capacity


The amount of storage on a hard disk, measured in gigabytes and terabytes. Hard drive capacity is measured by the amount of data users need to store, which is often much greater than the space applications take up. For example, a single video can take four gigabytes of space.

We've Come a Long Way!
In 1957, the cost of one megabyte of storage on the first hard drive would be the equivalent of $200,000 in current dollars. However, that megabyte costs a fraction of a cent today. See hard disk, byte, SSD and space/time.




Storage at Costco
No longer found only in specialty stores, hard drives are everywhere. This 3TB external drive holds roughly 700 videos, 750,000 songs or a million images.