How long is a solid-state drive life? How long can SSDs be used?

With the wide application of solid-state drives, many computer users are concerned about the life of the SSD is too short, some users think its flash-based technology under the premise, it is difficult to achieve the mechanical hard disk read and write times, leading to elimination. SSD SSD Price is more expensive, if the service life is much shorter than the ordinary hard disk, then the cost will be greatly discounted, then the solid-state drive life is how long? How long can SSDs be used?

　　Problem Analysis Solution:

In fact, in the manufacturing process of hard disk, technical support has been done more perfect. Although the service life problem is an unavoidable flaw of SSD hard disk, but the use of the ordinary consumer needs to see, far from the above view of exaggeration, and on some special hard disk, the write life can reach 1 million to 5 million times, so that the overall life expectancy of more than 20 years.

　　About SSD has write count lifetime limit:

　　SSD has written only thousands of times to look very little?

Do not rule out a lot of people see now mainstream 25nm process flash particles fell to less than 5,000 times p/e, so many people on the life of solid-state hard disk. 5,000 or even 3,000 times is almost an unacceptable number for a hard drive, but in fact the number is generally the most conservative value in the factory's brand name.

The wear balance, garbage collection strategy and calibration algorithm used by SSD master chip determine the service life of solid-state drive, and the word amplification is the most important one we have previously emphasized. Therefore, if you pay more attention to maintenance, and reduce the write-intensive enterprise applications, the actual life can even exceed this number.

　　Two charts high speed how strong is our SSD

There is no need to talk too much in theory, I have recently collected two charts that can be used as a reference. Of course, the source is not authoritative, if you do not believe the author also can not.

This diagram depicts several SSDs in the endurance test, where the blue stripe (MWI exhausted) indicates the amount of write guaranteed by the vendor, while the green Bar (TiB written) on the blue bar is the amount of data actually written to the test. Since the products are still being tested, there is no sense of horizontal comparison.

You can see the Intel 320 series 40GB SSD, the actual write volume is more than 600TB has not been hung, even if the location of the lower Kingston v+100 64GB to 300TB after the firm. 2010 rounds Crucial C300 its 64GB model has broken through 400TB, and the use of SandForce master control of the pirate ship Force3 120GB is already over 750TB.

This icon describes several solid-state drives that have completed the endurance test, which is already dead. One of the OCZ Vertex 2 40GB is due to firmware failure hangs, while the other several, you can see our well-known crucial M4 64GB after running nearly 800TB before hanging off.

Based on the test results of the second chart, it is true that the different SSDs are not small, but they will be longer than the manufacturers guarantee. What we're going to figure out is, how long can we use the crucial M4 64GB, with the highest level of cognition?

　　Inference based on actual usage consumption

Using one of the simplest and most stupid methods to calculate the amount of extra write amplification generated, even if you write 100GB of data a day, then 750TB can guarantee it to use 7,500 days that is 20. Can you imagine a hard drive you would use for 20 years.

Based on an actual user's usage, a crucial M4 64GB used as a system disk and a game disk was written in 1.2TB after six months, with a period of 13. Pinch refers to this wear level is less than 1%, the vast number of users you still struggle with what?

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