Genuine question: how those Datacenter-class SSDs manage that insane TBW? Samsung's 970 Pro, which was the last (consumer) MLC "Pro" drive by Samsung, got only about 800 TBW for a 1TB drive. Do they overprovision memory cells on those SSDs? Or are the cells just larger in order to sustain more wear over time?
Datacenter drives tend to have a bit more overprovisioning (ie. 960GB usable capacity rather than 1000GB). They also don't usually do SLC caching. They also grade write endurance based on different criteria: consumer SSDs are supposed to be able to retain their data for a full year after reaching the end of their write endurance, but enterprise SSDs only need to have 3 months data retention at end of life (albeit at a higher temperature).
But mostly, it's a matter of the consumer drives having low-balled ratings so that they don't cannibalize sales of the enterprise drives. Because the write endurance ratings are more about when the warranty expires than about when the memory itself is actually worn out.
