also: ゼッタバイト
zettabyte; ZB
Unit of digital information equal to 10^21 bytes or 2^70 bytes, depending on context. Used in computing.
This data center stores several zettabytes of data.
Borrowed from English 'zettabyte', combining the SI prefix 'zetta-' (from Latin 'septem', seven, representing 1000^7) and 'byte'.