In the computer newspaper, I saw that ABN Amro's 20 data centers have about 7PB of disk and more than 20PB of tape storage, and the annual 50%~70% growth of storage,
So I want to see how big the PB is, and calculate the 27PB size of the hard disk about 400,000 80.
1Byte = 8 Bit (0,1)
1 KB = 1,024 Bytes (size of a shortcut)
1 MB = 1,024 KB = 1,048,576 Bytes (size of one floppy disk)
1 GB = 1,024 MB = 1,048,576 KB = 1,073,741,824 Bytes (size of an AVI movie)
1 TB = 1,024 GB = 1,048,576 MB = 1,073,741,824 KB = 1,099,511,627,776 Bytes (size of one tape drive) The Milky One's memory is 98TB
The following are really impossible to describe, I was not exposed to such a large capacity of equipment. The total shared disk capacity of the Tianhe is 1PB
1 PB = 1,024 TB = 1,048,576 GB =1,125,899,906,842,624 Bytes (13107.2 80G
1 EB = 1,024 PB = 1,048,576 TB = 1,152,921,504,606,846,976 Bytes
1 ZB = 1,024 EB = 1,180,591,620,717,411,303,424 Bytes
1 YB = 1,024 ZB = 1,208,925,819,614,629,174,706,176 Bytes
What do you know about Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB?
The smallest base unit is byte. Not many people do not know, the following first in order to give all units
Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB
I only know the top five, and most people know that, according to the rate of 1024 calculation
40 1tb=2 byte=1099511627776 Byte of the second order
1pb=2 's 50-time Square Byte=1125899906842624byte
60 1eb=2 byte= 1152921504606846976 Byte of the second order
70 1zb=2 byte= 1180591620717411303424 Byte of the second order
80 1yb=2 byte= 1208925819614629174706176 Byte of the second order
90 1db=2 byte= 1237940039285380274899124224 Byte of the second order
100 1nb=2 byte= 1267650600228229401496703205376 Byte of the second order
In the calculation of the time, found that XP's own calculator is no way to forget, not to put down a calculator, sweating
Just look at these numbers you do not have a feeling, and now even a good imagine it, take NB as an example (why is called NB, it can be used in this unit of the place is very NB.) ）
is about to step into the TB era, and now the standard weight of 1TB hard disk is 670g (pretty much)
1nb=2 's 60 tb=1152921504606846976tb=1152921504606846976 1TB hard Drive
With a total weight of about 772,457,408,090,000 tons, the largest ship, Knox, has a weight of 560,000 tons.
That is to say, the hard drive that stores 1NB of data is the minimum of 1 379 388 229 times, about 1.4 billion times, to bring the data to the site, and an estimated 1000 Knorr-vis will be shipped for reimbursement.
Now understand the concept of 1NB, it is not worthy of NB, human development so many years to TB storage era, do not know before the world is destroyed, can develop to NB era ... Byte, KB, MB, GB, TB, PB, EB, ZB, YB, DB, NB