Solid state hard drives have many similarities in principle and structure to ordinary mechanical hard drives, such as simulating sectors, simulating tracks, and so on. Inside a solid-state drive, the core part is the controller, which is the core of the entire solid-state drive and includes many architectures, such as read and write algorithms, interface definitions, and so on. The main factor affecting the lifespan is the number of reads and writes. In the algorithm definition of solid-state drives, only one modification is considered a true read and write. The current 100000 write cycles are specific to each storage unit, such as performing 100000 write operations on each storage unit. However, solid-state drive devices do not continuously perform write operations on one unit, but instead allocate such operations to other units. This mechanism is called "wear balance" and is automatically completed by the controller of the solid-state drive.

The Flash chip indicates that there are only 100000 to 1 million reads and writes. Due to the limited number of erasures and the characteristics of erasing first and then writing, Flash may have a limited lifespan. To extend its expected lifespan, wear balancing algorithms are commonly used to manage each storage unit. The core of the balancing algorithm is to write new data to the least used physical block during each write operation to achieve the balance of the entire solid-state drive storage medium. Especially, the optimization of the algorithm in garbage collection strategy and static file management can greatly improve the lifespan of the entire solid-state drive. Garbage collection improves the efficiency of writing data while adhering to the principle of wear balance, Simultaneously enhancing the algorithm's ability to manage different types of file storage units, thereby achieving more effective wear balance. In addition, some manufacturers have started to imitate the traditional hard disk method by using RAM (memory medium) as a buffer. Due to the characteristics of RAM itself as a medium, it can improve the lifespan of the entire electronic disk.

Generally, solid-state drives do not have mechanical properties, so their structure is relatively simple, light in weight, and without complex accessories. They can be used in various environments such as high and low temperatures, vibrations, and impacts, and are also a major component of increasing lifespan. Different chips are also a factor affecting the lifespan. Due to different market demands, solid-state drives are also artificially divided into commercial grade solid-state drives (for personal consumption), industrial grade solid-state drives (for industrial applications), and military grade (for military applications), and their safety in use is also deduced in sequence.

With the increasing number of erasures and lifespans of Flash chips, the lifespan is also constantly improving. According to some current applications, the lifespan of a disk can generally reach over 6 years, and the algorithm of the controller is also constantly improving. The lifespan is also improving in another way, and I believe that there will be significant improvements in the future lifespan