SSD Write Endurance 25nm Vs 34nm

[sergiu]

I will be very happy if my Vertex 1 120GB survives till 62 TiB... Currently, it looks like it will die at about 4TiB mark (1000 erase count on 5000, and written about 1TiB in one year).

I just computed the WA for Samsung model and I got 5.22 which seems for me a very high value. Your Vertex 1 would have a WA of around 120 which is huge. Somebody should bring some older models to test them and compare how much wear algorithms evolved and which drive has the best ones. A few days ago I was convinced that drives with lower speed might be software limited. Now I believe that the final result is the tradeoff between WA and speed and it would make sense. A 40GB model has around 9.76 million 4KiB pages or around 76.2 thousand blocks from which it must choose wisely so that time spend in this operation is not higher (or significantly higher) than page write/ block erase time.