Comment by bayindirh
9 hours ago
In short: Aggressive overprovisioning.
Enterprise SSDs are not expensive only because they have better flash chips, but they have much more of them.
A top of the line write oriented SSD comes with 4-7x more capacity than what it says on the tin, but that extra capacity is used for cell replacement rather than capacity itself.
Mixed use comes with 2-4x overprovisioning, and read oriented is around 2x IIRC.
I find these numbers to be way outside of what I have heard of. I would be surprised if you could give an example that comes with even 1.5x capacity. (4TB capacity, 6TB actual flash on chips, for example.)