艾字节

英語:,縮寫為EB)(又稱百京位元組),是信息计量单位字节的多倍形式,通常在標示網路硬碟總容量,或具有大容量的儲存媒介時使用。国际单位制(SI)以1018来定义前缀艾可萨,故1艾字节表示1018字节[1]。據估算,2011年整个互聯網的容量總和不超過525 EB。在1公克DNA中可以储存360 EB的信息量。

的次方单位
十进制前缀
(SI)
名字符號次方
kB103
MB106
GB109
TB1012
PB1015
EB1018
ZB1021
YB1024
RB1027
QB1030
二进制前缀
(IEC 60027-2)
名字符號次方
kibibyteKiB210
mebibyteMiB220
gibibyteGiB230
tebibyteTiB240
pebibytePiB250
exbibyteEiB260
zebibyteZiB270
yobibyteYiB280

Exbibyte是另外一個與其相關的單位,使用二进制前缀,等於10246 (=260)個位元組。一個exbibyte大約比一個艾位元組大了15%。常与艾字节混淆。

與其他儲存單位的換算

  • 1 EB = 1,000 PB
  • 1 EB = 1,000,000 (106) TB
  • 1 EB = 1,000,000,000 (109) GB
  • 1 EB = 1,000,000,000,000 (1012) MB
  • 1 EB = 1,000,000,000,000,000 (1015) KB
  • 1 EB = 1,000,000,000,000,000,000 (1018) B

另外,艾字节往往亦可以指Exbibyte,其换算公式是:

  • 1 EB ≈ 0.867 EiB
  • 1 EiB = 1,024 PiB
  • 1 EiB = 1,048,576 (10242) TiB
  • 1 EiB = 1,073,741,824 (10243) GiB
  • 1 EiB = 1,099,511,627,776 (10244) MiB
  • 1 EiB = 1,125,899,906,842,624 (10245) KiB
  • 1 EiB = 1,152,921,504,606,846,976 (10246) B

參見

参考文献

  1. International Standard ISO/IEC 80000 Quantities and Units – Part 13: Information science and technology, International Electrotechnical Commission (2008).
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