James Hamilton referenced this in a blog post today. He was pretty skeptical. He's been a proponent of SSDs in some applications, but he can't see how their c

James Hamilton referenced this in a blog post today. He was pretty skeptical. He's been a proponent of SSDs in some applications, but he can't see how their cost can be justified yet on the basis of power efficiency alone. The power efficiency + higher overall iops justify the up front cost in applications where there is a high ratio of iops/GB stored, but most data is not accessed frequently, and Im sure that social nets are no exception. It totally makes sense though to reduce the need for RAM caches, since it is both cheaper per GB than RAM, and draws less power.