Explanation

TB stands for Terabytes. 

Terabytes are the largest unit of storage 

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Megabyte 1024 kilobytes

Gigabyte         1024 megabytes

Terabyte         1024 gigabytes

Petabyte         1024 terabytes

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• Smallest to largest unit of storage: 

Byte (smallest)

KB

MB

GB

TB (Largest)