Analysis of the method of solid-state hard disk and U disk

first, the main control algorithm is not the same

SSD is a special algorithm, this algorithm is different from each manufacturer, and is encapsulated in the main control chip.

With this algorithm, the data can be distributed evenly to each flash on the SSD, while the speed is increased, the life of the flash is greatly prolonged. More efficient algorithms can be high speed data compression read and write, especially the reading speed can be achieved very high, more efficient algorithm may be flat, but can greatly extend the life of Falsh chip, general solid State Drive normal use of words 3-5 year question is not big.

　　Second, the life expectancy is greatly prolonged

U disk fault frequency is also because the general U disk is also a flash chip, more than two chips, repeatedly on a chip on the same storage structure unit will accelerate the aging of the chip, and solid-state hard disk chip far more than one, two pieces, but up to dozens of chip, through the coordination of the main control, The data will be distributed to different chips to operate, balance the use of each chip, virtually superimposed on all the chips read and write a lot of time to prolong the stable work.

　　Third, you can read and write at the same time

At the same time from the hard copy of a file to a U disk and from a U disk copy a file to the speed of the hard disk, relative to you copy the file to a U disk or hard disk speed is much slower, because, flash chip the same storage unit structure at the same time can only read or write this single operation Flash Read and write data is by the change of voltage to complete, read to a voltage, write to a voltage, it is not possible to produce 2 kinds of voltage at the same time, but if there are many chips, the data is dispersed so for a chip combination of simultaneous reading and writing is possible.

　　Add:

U disk and solid-state hard disk structure principle is the same, the main control chip +flash memory chip, but U disk's main control chip is a compact version. SATA controllers are canceled, but there are zif (CE), ESATA,USB and other mobile devices that are universal controllers. It is said that the ability to address is also simplified, currently can only do 8 pieces of flash chips. While the main control chip of solid-state hard disk support 16 flash chips, more than 32 flash chips, or even more.

In addition to the same brand and series of solid-state drives there is usually a situation, the larger the capacity, the faster. As above, a master chip controls 16 or 32 flash chips for simultaneous read and write operations, similar to the mechanical hard disk array concept.