Week 4 posting- QLC SSD

 Quad-level cell SSD’s or QLC SSD store four bits of data per cell. The previous predecessors are single-level, multi-level, and triple-level cells which offer one, two, and three bits per cell respectively. Is QLC SSD a better choice than the previous models?

The only advantages I am seeing for QLC SSD is a lower total cost of ownership, reduced data center footprint, and increase in capacity. There are however a lot of downsides to them that I am not sure I would be comfortable with. That have less durability than previous models and makes them less reliable. Since QLC SSD have to check double the amount of threshold voltages compared to the TLC SSD they also write slower than the previous models. All in all, I feel like the QLC SSD is not going to be the best option for someone who constantly needs to rewrite over old data constantly.

 

References:

What is QLC SSD: Pure Storage. Pure Storage Data Storage Company. (n.d.). Retrieved September 25, 2022, from https://www.purestorage.com/knowledge/what-is-qlc-flash.html