ComputersOS

Petabyte - how much is this information?

For an accurate perception of the external world, man invented a system of measurements. We have learned to measure weight, speed, length and other characteristics. The development of computer technology has forced us to consider also information. Now its number has grown so much that to measure the volume you need a unit such as a petabyte. How much is this, we will try to understand.

PetaBayte - how much is it?

To answer this question, let's immediately determine that it is a question of the volume of processed or stored information. The most used unit in our time is a gigabyte.

The size of physical storage devices such as flash drives and hard disks of computers is indicated exactly in these units. Therefore, the question would be more correct as follows: "Petabyte, this is how many gigabytes of information?". The figure is quite large, it is 1048576 GB or 1024 TB (terabyte).

Information in physical volume

The resulting figure in gigabytes, of course, is impressive and even gives some visual representation, but still looks abstract. So the person is arranged that he needs to compare everything with something to understand and visualize. Equally, this can be attributed to the amount of information included in the petabyte.

How much can it be in material form, for example, in the same books? After all, the size of the book is clear to all. Let's try to calculate and answer this question. It is considered that the text page contains about 2.5 thousand characters. Thus, a 400-page book will contain 1 megabyte of information. Then a library of one gigabyte in size would have to contain 1024 books. Multiplying the quantities known to us, we get more than one billion books. For comparison, the fund of the most famous in the country Library named after Lenin is only about 50 million copies. In total, we have almost 22 such libraries, assembled into one petabyte.

How much will this be in terms of space occupied? The storage area of the library is 8.5 hectares. Twenty-two such buildings will occupy an area of 187 hectares of land. It is quite comparable with the principality of Monaco, which occupies only 202 hectares.

The volume of information on the Internet

Now, when we present what a petabyte is and how much it is in a physically measurable volume, we can already imagine the arrays of information processed on the Internet.

Statistics Cisco Sistems gives us the opportunity to look at these numbers, and they are impressive. The aggregate traffic of e-mail and web sites is 260 PB per day, at a time when the human brain can save only 1 PB for life and under ideal conditions.

This makes you think about what to do with this huge flow of information, how to process it and how to apply it correctly, to leave descendants with a worthy memory of our century of computer revolution.

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