So what's the difference you ask? A lot, 2.4% to be specific. In the telecom world, where billions of dollars are spent trying to achieve 5-9s, 2.4% makes a huge difference. It is therefore important to understand the various standards. The main difference is metric numbers vs. binary numbers.

Binary numbers: Binary system uses two basic units ...

- bit: represented as 'b' or simply as 'bit'
- Byte: represented as 'B'. 1B = 8bits

__ki__lo__bi__nary =__kibi____me__ga__bi__nary =__mebi____gi__ga__bi__nary =__gibi__, and so on

- 1 Kibit = 2^10 b = 1024 bit
- 1 MiB = 2^20 B = 1 048 576 B
- 1 GiB = 2^30 B = 1 073 741 824 B

Metric numbers: The units are represented as the first letter. So ...

__k__ilo =__k____m__ega =__m____g__iga =__g__, and so on

- 1 kbit = 10^3 bit = 1,000 bit
- 1 MB = 10^6 B = 1,000,000 B
- 1 GB = 10^9 B = 1,000,000,000 B

References NIST International System of Units page Here is a handy bit calculator Wikipedia byte page Technorati Tags: NIST , unit , metric , binary , bit , byte

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