Compared with QLC flash
memory, the data stored in each storage unit of PLC flash memory has increased from 4 bits to 5 bits. Compared with the charge trapping type, the floating gate type structure has better performance in reading anti-interference and data retention period and has a longer reading window, and as the storage density increases, the floating gate type is easier to increase the density. In addition, since the PLC can be produced on the equipment that manufactures the QLC, it is possible to rapidly evolve the technical route to the PLC.
A penta-level cell SSD stores five bits of data per memory cell and can store 25% more data in the same footprint compared to quad-level cell (QLC) SSDs. The added storage in the same space will allow for future cost, space, and energy usage savings for solid-state storage. This increase in NAND density will also help Solidigm strengthen its leadership in several focus areas, such as:
- Data-intensive needs of modern workloads such as AI, machine learning (ML) and big data analytics
- Building out of 5G infrastructure where faster, denser storage is needed
- Displacement of hard disk drives (HDDs), on which more than 85% of all data center data is still stored.
“We’re thrilled to show the industry’s first PLC SSD in action today. It is a major milestone for Solidigm as a new company, and an exciting moment for the future of storage technology with broad implications,” said Talreja. “The opportunity to grow with our customers while delivering even more efficient and cost-effective SSDs is huge for key growth segments like AI, machine learning, and big data.”
Currently, Solidigm has seen strong early market interest in PLC technology from many hyperscale cloud service providers, data center OEMs, and storage innovators. PLC SSD will be the first to be used in data center solutions, and the specific time is to be determined.
