Exabyte

The exabyte (derived from the SI prefix exa-) is a assemblage of advice or computer accumulator according to one quintillion bytes (short scale). The assemblage attribute for the exabyte is EB. The assemblage prefix exa indicates the sixth ability of 1000:

1 EB = 1000000000000000000B = 1018 bytes = 1 billion gigabytes = 1 actor terabytes

The exbibyte, application a bifold prefix, is the akin ability of 1024 bytes.

In principle, the 64-bit microprocessors begin in abounding computers can abode 16 exbibytes, or aloof over 18 exabytes, of memory.

Usage examples

The world's abstruse accommodation to abundance advice grew from 2.6 (optimally compressed) exabytes in 1986 to 15.8 in 1993, over 54.5 in 2000, and to 295 (optimally compressed) exabytes in 2007. This is agnate to beneath than one 730-MB CD-ROM per being in 1986 (539 MB per person), about 4 CD-ROM per being of 1993, 12 CD-ROM per being in the year 2000, and about 61 CD-ROM per being in 2007. Piling up the absurd 404 billion CD-ROM from 2007 would actualize a assemblage from the apple to the moon and a division of this ambit above (with 1.2 mm arrangement per CD).2

The world’s abstruse accommodation to accept advice through one-way advertisement networks was 432 exabytes of (optimally compressed) advice in 1986, 715 (optimally compressed) exabytes in 1993, 1,200 (optimally compressed) exabytes in 2000, and 1,900 in 2007.2

The world's able accommodation to barter advice through two-way telecommunication networks was 0.281 exabytes of (optimally compressed) advice in 1986, 0.471 in 1993, 2.2 in 2000, and 65 (optimally compressed) exabytes in 2007.2

In 2004, the all-around account Internet cartage anesthetized 1 exabyte for the aboriginal time. In January 2007, Bret Swanson of the Discovery Institute coined the appellation exaflood for a allegedly approaching flood of exabytes that would account the Internet's congestive collapse.34 Nevertheless, the all-around Internet cartage has connected its exponential growth, undisturbed, and as of March 2010 it is estimated at 21 exabytes per month.5

According to the June 2009 amend of the Cisco Visual Networking Index IP cartage forecast, by 2013, anniversary all-around IP cartage will ability two-thirds of a zettabyte or 667 exabytes. Internet video will accomplish over 18 exabytes per ages in 2013. All-around adaptable abstracts cartage will abound at a CAGR of 131 percent amid 2008 and 2013, extensive over two exabytes per ages by 2013.6

As of May 2009, the admeasurement of the world's absolute agenda agreeable has been about estimated to be 500 Exabytes.7

According to an IDC cardboard sponsored by EMC Corporation, 161 exabytes of abstracts were created in 2006, "3 actor times the bulk of advice independent in all the books anytime written," with the cardinal accepted to hit 988 exabytes in 2010.8910

According to CSIRO, in the abutting decade, astronomers apprehend to be processing 10 petabytes of abstracts every hour from the Square Kilometre Arrangement (SKA) telescope.11 The arrangement is appropriately accepted to accomplish about one exabyte every four canicule of operation. According to IBM, the fresh SKA telescope action will accomplish over an exabyte of abstracts every day. IBM is designing accouterments to action this information.12

According to the Agenda Britain Report,13 494 exabytes of abstracts was transferred beyond the apple on June 15, 2009.

Several filesystems use deejay formats that abutment abstract aggregate sizes of several exabytes, including Btrfs, XFS, ZFS, exFAT, and NTFS.

The ext4 book arrangement architecture supports volumes up to 1 exabyte in size, although the userspace accoutrement cannot yet administrate such filesystems.

Oracle Corporation claimed14 the aboriginal Exabyte band library with the SL8500 and the T1000C band drive in January 2011.

Practical comparisons

A accepted announcement claims that "all words anytime announced by animal beings" could be stored in about 5 exabytes of data,151617 generally citation a activity at the UC Berkeley School of Advice in support.18 The 2003 University of California Berkeley address credits the appraisal to the website of Caltech researcher Roy Williams, area the account can be begin as aboriginal as May 1999.19 This account has been criticized.2021 Mark Liberman affected the accumulator requirements for all animal accent at 42 zettabytes (42,000 exabytes, and 8,400 times the aboriginal estimate), if digitized as 16 kHz 16-bit audio, although he did advisedly acknowledge that "maybe the authors of the exabyte estimate were cerebration about text."22

Earlier Berkeley studies estimated that by the end of 1999, the sum of human-produced advice (including all audio, video recordings and text/books) was about 12 exabytes of data.23 The 2003 Berkeley address declared that in 2002 alone, "telephone calls common on both landlines and adaptable phones independent 17.3 exabytes of fresh advice if stored in agenda form" and that "it would booty 9.25 exabytes of accumulator to authority all U.S. telephone calls anniversary year."18 International Abstracts Corporation estimates that about 160 exabytes of agenda advice were created, captured, and replicated common in 2006.24 A analysis from University of Southern California estimates that the bulk of abstracts stored in the apple by 2007 as 295 exabytes and the bulk of advice aggregate on two-way communications technology, such as corpuscle phones in 2007 as 65 exabytes.