It is challenging. Most likely your data at rest are compressed. Go with the highest-end SSD money can buy, RAID0 them, and layout your compressed data as seque

It is challenging. Most likely your data at rest are compressed. Go with the highest-end SSD money can buy, RAID0 them, and layout your compressed data as sequentially as possible. You still need to trip to the main memory and decode though, and then the bandwidth between device / main memory becomes bottleneck. Alternatively you can write a decompressor to do that on device memory directly, haven't heard anyone doing that yet.