How long the life of solid state drive, SSD solid state drive service life detection method

How long will the SSD last
Solid state drives have the problem of erase and write times, so solid state drives have a life limit. The SSD internal flash memory is completely erased once called 1 PE, because
The lifetime of this SSD is in PE. The life of the SSD is mainly determined by the number of erase and capacity, and the number of erase and write is not different for different capacities and different particles. At present, there are SLC, MLC, TLC, QLC four kinds of particles on the market, SLC particles at present have a high cost, small capacity, relatively rare, most of the MLC positioning high-end products, TLC is the current market mainstream particles, and QLC particles have the shortest life, but the cost is smaller, the capacity is larger.
SLC particle theory has more than 100,000 times of P/E, MLC particle theory has about 3000-5000 times of P/E, TLC particle theory has about 1000-3000 times of P/E, and QLC particle theory has only 150 times of P/E.
SSD service life =(actual capacity (unit: GB) XP/E number)(write capacity per day (unit: GB/ day) Input amplification x365(unit:
For example, suppose that a 500G TLC solid state disk (theoretical erase to at least 1000 times P/E), according to the daily erase write 100G, that is, its life =1000*500/100/365=13.7 years, and this write times are also theoretical, beyond is not necessarily bad, And you can't erase 100 gigabytes a day. Therefore, the theoretical data is only for reference, some solid-state drives have not reached the theoretical life, it is broken, and some solid-state drives exceed the theoretical life, still strong, so you do not need to worry about the service life of solid-state drives.
SSD life end performance
The current SSD management chip and flash memory technology have made great progress, if it exceeds the service life of the SSD, do not worry about the data, because at most it can not be written, but the data is still there, it can be read.
Although today's SSDS even have a lifetime limit, they are enough to last 5-10 years
The service life detection method of SSD
At present, many solid-state drive tools have life detection functions, and the following software is shared for your reference.
1CrystalDisklnfo
CrvstalDisklnfo is a hard disk detection tool that can detect hard disk information by installing CrystalDiskinfo software on a computer with an SSD. We opened CrystalDisklnfo software to detect a certain model of intel solid state drive, in the health column, the detection of the solid state dry remaining life of 92%. SSD wear is actually determined by the amount of NAND write, which is affected by both the host write and write magnification, but many SSDS do not provide specific values for NAND write.
2, SSD manufacturer tools
The remaining life value of SSD detected by different hard disk detection tools may also be different. We use the lntel solid-state drive tool to detect the life of SSD, and the life value is only 67%
3. M.2 SSD life detection
With the development of NVMe SSD, SMART health information is finally unified. This is the CrystalDiskMark detection information of Toshiba RC100 240G NVMe SSD: The health status is determined by the 03 Available Spare space, the spare block is 100% remaining, so the current remaining life is 100%.
Through the Toshiba SSD Utility SSD toolbox, you can see that the health of this RC100 NVMe SSD is 97%.
The 97% figure is based on the host write volume as a percentage of vM-labeled total SSD write volume (TBW), as shown in the SMART Information 05Percentage Used. Below is the TBW information of the Toshiba RC100, which is calculated according to the JEDEC standard, which is more stringent than the actual domestic use. After the NVMe SSD era, the health detection results of different hard disk detection software are still different, which result is more accurate? Xiaobian believes that solid state
The toolbox software testing provided by hard disk manufacturers is relatively scientific
Although the calculation based on the percentage of fixed TBW is rigid, it is more reliable than the method of estimating the life by the degree of spare block consumption.