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2. Orders of magnitude (data) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(data)

   The storage limit of IDE standard for harddisks in 1986, also the volume size limit for the FAT16B file system (with 32 KiB clusters) released in 1987 as well as the maximum file size (2 GiB-1) in DOS operating systems prior to the introduction of large file support in DOS 7.10 (1997).

3. Units of information - Wikipedia

   en.wikipedia.org/wiki/Units_of_information

   A unit for a large amount of data can be formed using either a metric or binary prefix with a base unit. For storage, the base unit is typically byte. For communication throughput, a base unit of bit is common. For example, using the metric kilo prefix, a kilobyte is 1000 bytes and a kilobit is 1000 bits.

4. File size - Wikipedia

   en.wikipedia.org/wiki/File_size

   File size is a measure of how much data a computer file contains or how much storage space it is allocated. Typically, file size is expressed in units based on byte. A large value is often expressed with a metric prefix (as in megabyte and gigabyte) or a binary prefix (as in mebibyte and gibibyte). [1]

5. Density (computer storage) - Wikipedia

   en.wikipedia.org/wiki/Density_(computer_storage)

   The maximum areal density is defined by the size of the magnetic particles in the surface, as well as the size of the "head" used to read and write the data. In 1956 the first hard drive, the IBM 350, had an areal density of 2,000 bit/in 2. Since then, the increase in density has matched Moore's Law, reaching 1 Tbit/in 2 in 2014. [2]

6. Comparison of file systems - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_file_systems

   While storage devices usually have their size expressed in powers of 10 (for instance a 1 TB Solid State Drive will contain at least 1,000,000,000,000 (10 12, 1000 4) bytes), filesystem limits are invariably powers of 2, so usually expressed with IEC prefixes.

7. Disk sector - Wikipedia

   en.wikipedia.org/wiki/Disk_sector

   In the context of data storage, a filesystem block is an abstraction over disk sectors possibly encompassing multiple sectors. In other contexts, it may be a unit of a data stream or a unit of operation for a utility. [13] For example, the Unix program dd allows one to set the block size to be used during execution with the parameter bs=bytes ...