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Understanding SSDs: Why SSDs hate write amplification

Understanding SSDs: Why SSDs hate write amplification

I often tell people that SSDs work better with more free space, so anything that increases free space will keep WA lower. The two key ways to expand free space (thereby decreasing WA) are to 1) increase over provisioning and 2) keep more storage space free (if you have TRIM support).

PCIe flash: It solves lots of problems, but also makes a bunch - so what's its future?

PCIe flash: It solves lots of problems, but also makes a bunch - so what's its future?

It’s worth pointing out that almost all the "magic" that has been developed around flash was already scoped out in 2007. It just takes a while for a whole new industry to mature. Individual die capacity increased, meaning fewer die are needed for a solution – and that means less parallel bandwidth for data transfer…