大数据最小的基本单位是Byte,按顺序给出所有单位:bit、Byte、KB、MB、GB、TB、PB、EB、ZB、YB、DB、NB,它们按照进率1024(2的十次方)来计算:
1Byte = 8 bit
1 KB = 1,024 Bytes
1 MB = 1,024 KB = 1,048,576 Bytes
1 GB = 1,024 MB = 1,048,576 KB = 1,073,741,824 Bytes
1 TB = 1,024 GB = 1,048,576 MB = 1,073,741,824 KB = 1,099,511,627,776 Bytes
1 PB = 1,024 TB = 1,048,576 GB =1,125,899,906,842,624 Bytes
1 EB = 1,024 PB = 1,048,576 TB = 1,152,921,504,606,846,976 Bytes
1 ZB = 1,024 EB = 1,180,591,620,717,411,303,424 Bytes
1 YB = 1,024 ZB = 1,208,925,819,614,629,174,706,176 Bytes
1 DB = 1024 YB = 1,237,940,039,285,380,274,899,124,224 Bytes
1 NB = 1024 DB = 1,267,650,600,228,229,401,496,703,205,376 Bytes
大数据已经出现,因为我们生活在一个有46亿全球移动电话用户和20亿人访问互联网社会中,人们比以往任何时候都与数据或信息交互密不可分。因为大数据,其影响除了经济方面的,它同时也在政治、文化等方面产生深远的影响,大数据可以帮助人们开启循“数”管理的模式,也是我们当下“大社会”的集中体现,三分技术,七分数据,得数据者得天下。