SSD in recent years has become the user computer of choice, after all, compared with the mechanical drive, the advantages of SSDS was too obvious, especially the speed of 4 k, etc. Also in rolling. 2 the popularity of SSD, and accompanied by m. transmitted through PCIe channel NVMe SSD became the beacon on market, many consumers installed and upgrade the computer has become the preferred products, compared with the traditional SATA type of SSD, NVMe SSD with faster speed, let the user more quickly in the APP as well as the operation of the game. But as NVMe SSD to several GB per second, the speed of the user's daily use requirements have been met, so consumers in the choose and buy NVMe SSD, starting from the absolute speed shifted to other aspects, such as NVMe SSD's life. As an important data storage medium, everybody is naturally do not want the SSD sudden collapse.


To consumers in order to be able to understand their purchase of SSD, the life of a vendor invented the TBW this index. TBW full Total Bytes Written, which means that the Total number of Bytes Written, in Chinese, that is, on behalf of the service life of solid state drives, refers to the service life of the SSD can be Written before the end of the Total number of SSD according to quantity. In addition TBW is used to define the SSD is a guarantee of a numeric value, if the data is written to more than the amount of the value, then the manufacturer will not give warranty service for SSD.

A piece of SSD calibration TBW 100, for example, that can be written before the end of the life of SSD 100 terabytes of data, if the amount of data to drive more than 100 TB, so manufacturers will no longer give the SSD corresponding warranty service. In general, the larger the TBW solid-state drives, then its data will also be more secure. Of course TBW for users are abstract, and through the software testing to check the health is one of the more intuitive.