![]() ![]() Hard disk manufacturers and some disk utilities have traditionally used SI units in their base- 10 way, whereas other utilities have used base-2 units. Unfortunately, this inconsistent application of SI units to binary measures can lead to confusion. Thus, the SI prefixes have often (but not always) been applied to binary units that are close to some decimal units - kilo to 1,024, mega to 1,048,576, and so on. In the computer field, however, binary (base-2) units are often more convenient. As such, SI units use decimal (base-10) multipliers - kilo means 1000 of the base units, mega refers to 1,000,000 of the base units, and so on. Kilo, mega, and other names are taken from the International System (SI) of Units, which describes units used by the metric system. ![]() ![]() Unfortunately, the meanings of these units have often been unclear. Disk sizes have traditionally been measured in units of kilobytes (KB), megabytes, gigabytes (GB), and terabytes (TB). ![]()
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