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A ''' |
A '''yottabyte''' (derived from the [[SI prefix]] ''[[yotta]]''-) is a unit of [[information]] or [[computer storage]] equal to one [[septillion]] (one [[long and short scales|long scale]] [[quadrillion]] or 10<sup>24</sup>) [[byte|bytes]]. It is commonly abbreviated '''YB'''. As of 2009, no computer has yet achieved one yottabyte of storage. In fact, the combined space of all the computer hard drives in the world does not amount to even one [[zettabyte]]. According to one study, all the world's computers stored approximately 160 [[exabytes]] in 2006.<ref>[http://www.emc.com/about/destination/digital_universe/pdf/Expanding_Digital_Universe_IDC_WhitePaper_022507.pdf Expanding Digital Universe IDC White Paper (pdf)] </ref> |
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When used with byte multiples, the SI prefix indicates a power of 1,000: |
When used with byte multiples, the SI prefix indicates a power of 1,000: |
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* 1 septillion, or 1,000,000,000,000,000,000,000,000 bytes — 1000<sup>8</sup>, or 10<sup>24</sup> |
* 1 septillion, or 1,000,000,000,000,000,000,000,000 bytes — 1000<sup>8</sup>, or 10<sup>24</sup> |
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The term "[[ |
The term "[[yobibyte]]", using a [[binary prefix]], is used for multiples of 1024. |
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The term "[[macabtyte]]" refers to a storage unit used on Apple computers. It appears larger, is in fact smaller but considerably more expensive than the equivalent PC storage unit. Macabytes have a glowing Apple printed on each byte. |
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==References== |
==References== |
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Revision as of 02:38, 8 July 2009
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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. It is commonly abbreviated YB. As of 2009, no computer has yet achieved one yottabyte of storage. In fact, the combined space of all the computer hard drives in the world does not amount to even one zettabyte. According to one study, all the world's computers stored approximately 160 exabytes in 2006.[1] When used with byte multiples, the SI prefix indicates a power of 1,000:
- 1 septillion, or 1,000,000,000,000,000,000,000,000 bytes — 10008, or 1024
The term "yobibyte", using a binary prefix, is used for multiples of 1024.