The zettabyte is a multiple of the unit byte for digital information. The prefix zetta indicates the seventh power of 1000 and means 1021 in the International System of Units (SI), and therefore one zettabyte is one sextillion (one long scale trilliard) bytes.

zettabyte
The zettabyte file system
Entering the Zettabyte Era
The Zettabyte Era: Trends and Analysis
The Zettabyte Era: Trends and Analysis
Zettabyte reliability with flexible end-to-end data integrity
Data Storage Energy Efficiency in the Zettabyte Era
Automatic Performance Tuning in the Zettabyte File System
Architectures and methodologies for future deployment of multi-site Zettabyte-Exascale data handling platforms
Cloud-Sea Computing Systems: Towards Thousand-Fold Improvement in Performance per Watt for the Coming Zettabyte Era