The question of the read/write lifespan of TLC SSDs has always been highly controversial, but whether you accept or not, TLC SSDs have been widely available. So is the read/write lifespan of TLC SSDs really unbearable? Here's my help to analyze them. Take Samsung's latest 860PRO as an example.
First of all, we look at the characteristics of TLC particles. TLC stands for Triple-Level Cell. It is a 2 bit/cell MLC flash memory extension. TLC reaches 3 bit/cell. TLC uses different potential charge, and a floating gate stores 3 bits of information. The storage density theoretically increases by 0.5 times compared to MLC flash memory.
1. The theoretical storage density is the highest; 2. The manufacturing cost is the lowest; the price is 20-50% lower than that of the MLC flash memory; 3. The P/E life can reach 1000-2000 times; 5. The theoretical read/write speed ratio MLC is slightly slower.
These features make TLC SSDs cheap and stable, so now most solid-state drive manufacturers have joined the TLC camp. Next, Samsung's official website to check the Samsung 860EVO's read and write life, capacity is 250GB (large-capacity SSD read and write life is more Long).
The 860EVO 250GB SSD has a warranty of 'five years or 150 TBW'. This understanding is very simple. Similar to car care, over five years warranty is over or the total write volume exceeds 150TBW warranty end, with the first-come condition first.
A total write volume of 150 TBW is a very large amount of data. Suppose you write 50 GB of data each day, 18.2 TB a year, and a total of 8.2 years to achieve a write volume of 150 TBW. Note that 8.2 years to achieve the amount of writes The quality assurance standard does not mean that the 860EVO will be corrupted immediately after writing 150TBW. According to a large number of tests at home and abroad, after the TLC solid state disk has been written out, it can still be used for a long time.
What's more, writing 50GB data in one day is an order of magnitude that most users can't reach. 10-20GB is a relatively normal range. So do not worry about the TLC SSD life of the students do not worry, TLC SSD normal use 8-10 years without any problems. In addition to solid-state hard disk capacity increases year after year, a solid state hard disk generally use 3-5 years to replace it, not even reached Write life to TLC.
