|Multiples of bytes|
|Orders of magnitude of data|
The yottabyte (symbol: YB) 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 (long scale quadrillion) bytes. The yottabyte, adopted in 1991, is the largest of the formally defined multiples of the byte.
- 1 YB = 10008bytes = 1024bytes = 1000000000000000000000000bytes = 1000zettabytes
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. By late 2016, memory density had increased so that a yottabyte of data could be stored on SD cards occupying roughly twice the size of the Hindenburg (around 400 thousand cubic metres).
The total amount of data that could be stored in the observable universe using each of the 1078 to 1082 atoms as single bits of information (using their spin for example) is between 1.25×1053 and 1.25×1057 yottabytes.
- Diaz, Jesus (7 Jun 2010). "The One Hundred Trillion Dollars Hard Drive". Gizmodo. Retrieved 7 March 2013.
- "Archived copy". Archived from the original on 2017-02-02. Retrieved 2017-01-20.CS1 maint: archived copy as title (link)
- Villanueva, John Carl (2009-07-30). "How Many Atoms Are There in the Universe?". Universe Today. Retrieved 2019-03-12.
- ibs,기초과학연구원,ibs Institute for Basic Science. "Single Atom Memory: The World's Smallest Storage Medium". www.ibs.re.kr. Retrieved 2020-03-19.CS1 maint: multiple names: authors list (link)