Samuel Chiltern answered
Firstly, I have to say that I don't think there is any such unit as OB, and I can't imagine what it might stand for. So I suspect that this is just a typo.
If this is the case, the correct unit is petabyte (PB), and the unit that comes next will be exabyte (EB).
Orders of Magnitude of Data
Here is a list of data storage units, starting with kilobyte, and going right up to yottabyte:
If this is the case, the correct unit is petabyte (PB), and the unit that comes next will be exabyte (EB).
Orders of Magnitude of Data
Here is a list of data storage units, starting with kilobyte, and going right up to yottabyte:
- Kilobyte (kB) - this is 1,000 (10^3) bytes, a tiny unit by today's standards
- Megabyte (MB) - one million (10^6) bytes, or a thousand kilobytes
- Gigabyte (GB) - this is one billion (10^9) bytes, (known as 1 thousand million bytes in the US)
- Terabyte (TB) - the size of a large consumer drive, this is a billion (10^12) gigabytes
- Petabyte (PB) - 10^15 bytes, the largest data clusters currently available are measured in PB
- Exabyte (EB) - 10^18 bytes, this is an enormous amount of storage
- Zettabyte (ZB) - 10^21 bytes, the entire content of the World Wide Web is estimated to stand at 500 exabytes, or half a zettabyte
- Yottabyte (YB) - 10^24 bytes, this is an unprecedented quantity of data, which globally, we are nowhere near to reaching yet
