QLC · Quad-Level Cell
Flash storing four bits per cell, offering high density and low cost at the expense of write endurance and speed.
Current numbers
~$36BAI storage market (2025), ~24% CAGR; QLC + data reduction displacing HDD across hot and capacity tiers
122 TBshipping QLC SSD capacity (Solidigm); public roadmap to ~245 TB in 2026
~7 GB/s vs ~300 MB/sQLC SSD vs HDD sequential read; 20–100 µs vs ~4 ms latency