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The yottabyte is a multiple of the unit byte for digital information. The prefix ''yotta'' indicates multiplication by the eighth power of 1000 or 1024 in the International System of Units (SI), and therefore one yottabyte is one septillion (one long scale quadrillion) bytes. The unit symbol for the yottabyte is YB. : 1 YB = = = = = A related unit, the yobibyte (YiB), using a binary prefix, is equal to . ==Examples== *In 2010, it was estimated that storing a yottabyte on terabyte-size disk drives would require one million city block size data-centers, as big as the states of Delaware and Rhode Island combined. If 200 GB microSDXC cards (the most compact data storage medium available to the public as of early 2015) were used instead, the total volume would be approximately cubic meters, or the volume of 32 percent of the Great Pyramid of Giza. *With recently demonstrated technology using DNA computing for storage, one yottabyte of capacity would require a volume between 0.003 and 1 cubic meter, depending on number of redundant backup copies desired and the storage density: "Our genetic code packs billions of gigabytes into a single gram".〔(【引用サイトリンク】 date= August 16, 2012 )〕 DNA is much less mature technology than microSDXC cards (for this application) and accompanied by uncertain costs, but this suggests potential information density.〔(【引用サイトリンク】 title= Yottabyte DNA. Database of the New Age )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Yottabyte」の詳細全文を読む スポンサード リンク
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