@Rob
Samsung and Sandisk do this already. Maybe not all three but TLC drives with a SLC cache.
I'm hearing in the channel that since a single SSD drive outperforms an array of 15krpm drives, HP et al. are about to stop sales of the 15krpm drives. Price-wise the enterprise SSD's are still damn expensive and the even some prosumer drives have great endurance these days.
Biting the hand that feeds IT
