A few obvious conclusions are that SLC SSDs are priced roughly the same as memory. In a sense SLC SSDs are better than memory since they are persistent, but if keeping all your data in memory sounds expensive then so will SLCs. And in any case you can’t eliminate memory caching entirely as at least some part of the index likely needs to reside in memory even with the faster access times SSDs provi
![SSDs and Distributed Data Systems](https://cdn-ak-scissors.b.st-hatena.com/image/square/0672900d6dd45475db416b1b57f994e3e74305d1/height=288;version=1;width=512/https%3A%2F%2F64.media.tumblr.com%2F28836ecfd574e839e066794175b73206%2Fefcc06127d3d7089-62%2Fs512x512u_c1%2F002d22fafeb231fd71eb251a4802b275677415d2.jpg)