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Encyclopedia > Zettaoctet
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Quantities of bytes
SI prefixes Binary prefixes
Name
(Symbol)
Standard
SI
Alternate
Use
Name
(Symbol)
Value
kilobyte (kB) 103 210 kibibyte (KiB) 210
megabyte (MB) 106 220 mebibyte (MiB) 220
gigabyte (GB) 109 230 gibibyte (GiB) 230
terabyte (TB) 1012 240 tebibyte (TiB) 240
petabyte (PB) 1015 250 pebibyte (PiB) 250
exabyte (EB) 1018 260 exbibyte (EiB) 260
zettabyte (ZB) 1021 270 zebibyte (ZiB) 270
yottabyte (YB) 1024 280 yobibyte (YiB) 280

A zettabyte (derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes. It is commonly abbreviated ZB. Because of a traditional inconsistency, "zettabytes" are often intended to mean zebibytes in common speech. This usage is not recommended as it creates confusion (see below) and has been facing increasing opposition by many technical standards and legal entities in the past few years. A byte is commonly used as a unit of storage measurement in computers, regardless of the type of data being stored. ... An SI prefix is a prefix that can be applied to an SI unit to form a decimal multiple (supramultiple or submultiple). ... In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten. ... Cover of brochure The International System of Units. ... In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten. ... A kilobyte (derived from the SI prefix kilo-, meaning 1000) is a unit of information or computer storage equal to either 1024 or 1000 bytes. ... A kibibyte (a contraction of kilo binary byte) is a unit of information or computer storage, commonly abbreviated KiB (never kiB). 1 kibibyte = 210 bytes = 1,024 bytes The kibibyte is closely related to the kilobyte, which can be used either as a synonym for kibibyte or to refer to... A megabyte is a unit of information or computer storage equal to approximately one million bytes. ... A mebibyte (a contraction of mega binary byte) is a unit of information or computer storage, abbreviated MiB. 1 MiB = 220 bytes = 1,048,576 bytes = 1,024 kibibytes The mebibyte is closely related to the megabyte (MB), which can either be a synonym for mebibyte, or refer to 106... A gigabyte (derived from the SI prefix giga-) is a unit of information or computer storage equal to one billion (that is, a thousand million) bytes. ... A gibibyte is a unit of information or computer storage. ... A terabyte (derived from the prefix tera-) is a measurement term for data storage capacity equal to 1000 gigabytes, i. ... A tebibyte is a unit of information or computer storage, commonly abbreviated TiB. 1 tebibyte = 240 bytes = 1,099,511,627,776 bytes The tebibyte is closely related to the terabyte, which can either be a synonym for tebibyte, or refer to 1012 bytes = 1,000,000,000,000 bytes... A petabyte (derived from the SI prefix peta- ) is a unit of information or computer storage equal to one quadrillion bytes. ... A pebibyte is a unit of information or computer storage. ... An exabyte (derived from the SI prefix exa-) is a unit of information or computer storage equal to approximately one quintillion bytes. ... An exbibyte (a contraction of exa binary byte) is a unit of information or computer storage, abbreviated EiB. 1 exbibyte = 260 bytes = 1,152,921,504,606,846,976 bytes = 1,024 pebibytes The exbibyte is closely related to the exabyte, which can either be a synonym for exbibyte, or... A zettabyte (derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes. ... A yottabyte (derived from the SI prefix yotta-) is a unit of information or computer storage equal to one septillion (one long scale quadrillion or 1024) bytes. ... A yobibyte (a contraction of yotta binary byte) is a unit of information or computer storage, commonly abbreviated YiB. 1 yobibyte = 280 bytes = 1,208,925,819,614,629,174,706,176 bytes = 1,024 zebibytes The yobibyte is closely related to the yottabyte, which can either be a synonym... An SI prefix is a prefix that can be applied to an SI unit to form a decimal multiple (supramultiple or submultiple). ... Zetta (symbol Z) is a SI prefix in the SI (system of units) denoting 1021 or 1 000 000 000 000 000 000 000. ... Information is the result of processing, manipulating and organizing data in a way that adds to the knowledge of the person receiving it. ... This article or section does not cite its references or sources. ... Main article: Names of large numbers A sextillion is a number written as either: a 1 followed by 21 zeros (10 to the 21st power, as used in the short scale system of numeration. ... The long and short scales are two different numerical systems used throughout the world. ... In long scale usage: one trilliard = 1,000,000,000,000,000,000,000 = 1021 one thousand trilliards =one (long scale) quadrillion This word is not found in standard English dictionaries. ... A byte is commonly used as a unit of storage measurement in computers, regardless of the type of data being stored. ... A zettabyte (derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes. ...

Because of irregularities in the definition and usage of terms for byte multiples, the exact number can be either one of the following:

• 1,000,000,000,000,000,000,000 bytes — 10007, or 1021.
• 1,180,591,620,717,411,303,424 bytes — 10247, or 270.

Because of these irregularities, the term "zebibyte" has been proposed as an unambiguous reference to the latter value. (See binary prefixes.) A zettabyte (derived from the SI prefix zetta-) is a unit of information or computer storage equal to one sextillion (one long scale trilliard) bytes. ... In computing, binary prefixes can be used to quantify large numbers where powers of two are more useful than powers of ten. ...

The Z in Sun's ZFS file system originally stood for zettabyte. Sun Microsystems, Inc. ... ZFS, is a free, open-source file system produced by Sun Microsystems for its Solaris Operating System. ...

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