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The flash you linked to the datasheet for is over a decade old. Any SSD built from it would fall short of adequate by an order of magnitude in every important m
by wtallis 4y ago
The flash you linked to the datasheet for is over a decade old. Any SSD built from it would fall short of adequate by an order of magnitude in every important metric. The per-die capacity of typical current-generation NAND flash is 16x larger, the interface speeds are 8x higher, erase blocks are 24x larger, program latency can be 5-10x higher. And most importantly, all mainstream SSDs now use flash that stores three or four bits per physical memory cell, rather than one.
So using that flash, you could build something that is recognizably an SSD. But it would be almost entirely useless: too expensive and too small and slow for production use, and too far removed from the current state of the art to serve as a research platform for the most important challenges the SSD industry has been dealing with for the past several generations (error correction strategies for TLC/QLC, and SLC caching).
- stormbrew 4y agoA couple things: - I just picked one at random. I'm sure the bleeding edge is harder to get and datasheets are harder to get, but I wasn't trying to find the newest or best. - the specific subthread here is about the diy-ishness of ssds vs. spinning rust, where the difficulties are of a fundamentally different kind. I feel like it goes without saying that a home built ssd is not going to perform to the level of mass production devices, the question was just can you.