TLC NAND SSDs: The crippling problem storage makers don't advertise

With last week’s release of Crucial’s BX200 SSD, a drive that features TLC (triple-level cell) NAND, it’s time to shine a light on this burgeoning segment of the SSD market—especially as vendors happily quote numbers that would have you believe that these SSDs perform just like any other.
Most of the time TLC SSDs perform quite well. But copy a large amount of data to a TLC drive, and part way through the operation you’ll see something discomforting—a st