I saw a video of a massively RAIDed collection of SSDs and was impressed, but the practical application is dubious. SSDs are the only hardware that can currently use the 6.0 GBps transfer rate and the advantage of RAID in HDDs is that you have two spinning mechanical devices that increase the overall speed by reading stripes. The advantage of RAIDing SSDs is dubious because the limitation is in the bus transfer. If you have an effective read tranfer of 4 GBps the increased read speed is limited to their individual reads and, while you may incrementally may increase the speed, the trade off is both expense and the fact that switching between two SSDs does not increase their individual access speed. RAIDing two HDDs with 100 MBps speed will be an increase from 1.0 to 1.7 times the HDD speed of a single drive. But RAIDing two SSDs will only get an increase of 1.0 to 1.05 or maybe 1.10. The limit on SDDs is that they are static RAM devices and the access speed is limited by the speed of the RAM. Unless you can somehow buffer the read/write speed through some buffer (and that buffer has to be in RAM) you are limited to the speed of the RAM,