1TB equals how many GB?

Storage capacity: The maximum number of data that can be stored on the storage device, typically in kilobytes (KB kilobyte), megabytes (MB megabyte), gigabytes (GB, gigabyte), Byte (TB, terabyte), and Pb (Petabyte), EB ( Exabyte), etc. to measure.

1kb=2 (b=1024b); The number in parentheses is the index of 2 (that is, how many times)

1mb=2 (a) kb=1024kb=2 (a) B;

1gb=2 (mb=1024mb=2) B.

1tb=2 (a) gb=1024gb=2 (B)

1pb=2 (M) tb=1024tb=2 (B)

1eb=2 (a) pb=1024pb=2 B

1Byte (equivalent to an English letter, your name is quite 6Bytes (6B).

Kilobyte (KB) =1024b is equivalent to the content of a short story.

Megabyte (MB) =L024KB is equivalent to the textual content of a short story.

Gigabyte (GB) =1024MB is equivalent to the music content of the symphony of Beethoven's fifth movement.

Terabyte (TB) =1024GB is equivalent to the amount of X-ray information in a large hospital.

Petabyte (PB) =L024TB is equivalent to 50% of the entire American academic research library collection information content.

Exabyte (EB) =1024PB;5EB is equivalent to the words spoken by humans all over the world today.

Zettabyte (ZB) =1024eb like the total number of sand on the world's beaches.

Yottabyte (YB) =1024ZB is equivalent to the total of 7,000 human cells in vivo.

With the debut of the first homemade quadrillion computer 29th in Changsha, Hunan, the inventor of the ancient calculator, China has the fastest computing tool in history.

Tianhe No. quadrillion Super Computer system

1206 trillion times per second peak speed and 563.1 trillion times per second Linpack measured performance, the computer, named "Tianhe", topped the top 100 of China's supercomputers on the same day, and made China the second country in the world to develop quadrillion supercomputers after the United States.

This speed means that if you use the "Tianhe number" to calculate one day, a current mainstream computer is counted for 160 years. The storage capacity of "Tianhe one" is equivalent to the sum of the collection of 4 national libraries.

Supercomputer, also known as High-performance computer, supercomputer, is recognized as the world's High-tech commanding Heights and 21st century, one of the most important scientific fields

The Tianhe number uses 6,144 Intel common multi-core processors and 5,120 AMD graphics acceleration processors with a total memory capacity of 98TB, point-to-point communication bandwidth of 40Gbps, and a shared disk total capacity of 1PB. The super computer system will be deployed in Tianjin Binhai New Area national supercomputing Tianjin Center as the business host.

How to deal with global information efficiently has always been a hot pursuit for Google, and its self-developed C + + Programming tool, MapReduce, plays a key role. It can be multi-threaded simultaneous execution of large-scale data sets (more than 1TB) parallel operations, is the daily super calculation of the perfect solution.

Google proudly announces today that it will be able to sort the 1TB data in just 68 seconds. These data are uncompressed text files that are stored on 1000 computers using the Google File system filesystem. Prior to that, Google processed the same amount of data distributed on 910 computers for 209 seconds, with only about One-third more efficient now.

Of course, the information explosion era of data is far more than TB level, more common is 1000 times times the PB level. In January this year, Google MapReduce averaged 20PB of data per day, equivalent to 240 times times the amount of data archived by the Library of Congress in May this year.

So how long does it take for Google MapReduce to sort the 1PB data on 4000 machines? The answer is 6 hours and 2 minutes. Globally, nobody but Google has the ability to handle this kind of high-speed processing.

Google also revealed that the 1PB data was stored on 48,000 hard drives (not fully filled), but given the duration of the test, the number of hard drives involved, and the lifespan of the hard drive, at least one hard drive would be hung off each time the test was tested. To do this, the Google file system backs up three copies of each file and places them on three hard drives.

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