TLC is not worthless. Short-lived chip or booster data center

Prior to the Tenkine server channel's "http://www.aliyun.com/zixun/aggregation/15579.html" > Solid-State hard drive development of the war: the gradual drift away from the Enterprise Storage program, the article once said, While SSD solid-state drives may once be the first choice in storage solutions, as technology upgrades and memory chip research deepen, storage particle manufacturers have finally embarked on a shortcut: The evolution of the SLC-MLC-TLC-QLC, as far as possible without increasing the size of the transistor, Three-level jumps in capacity are achieved at the lowest cost, and the capacity of MLC storage grains is twice times that of SLC at the same cost, and TLC is 3 times times the capacity of SLC.

But such a development route also poses a very tricky problem for solid-state drives. Chip on the data storage is dependent on the voltage, from the SLC upgrade, the storage use of the control voltage from 2 to upgrade to 8, the frequent changes in the voltage is not only the increase in storage delay caused by the performance drop, but also a huge impact on the transistor.

The house leaks in the rain, as a result of the progress of the transistor manufacturing process "surprising", the process from more than 50 nm to 20 nm or even higher levels of technology, the transistor in the withstand of more and more complex voltage shocks, but also more and more fragile, so in the life of a large discount, developed to TLC, its p cycle /erase cycle, can be regarded as life-only 1% of SLC, and only 30% of MLC. At present, the P cycle of TLC is less than 1000 times, which is far less than 2,500 times of enterprise storage requirements.

In fact, even if no TLC appears, the Problem of SSD life will still cause the enterprise storage industry to explore. Theoretically, the more advanced the process, the more benefits should be, however, in the storage area is not the case at all. In the MLC era, with the upgrading of the manufacturing process, the early MLC chip and today's MLC chip life is also very different, on the MLC chip life expectancy has reached 70%.

12 Next Read full-text page navigation 1. The disadvantages of TLC storage scheme 2. Flexible application to reduce data storage costs (author: Wang Editor: Wang)