Yes, some webhosting companies use SSD, but no webhosting companies actually provide unlimited services. Virtually unlimited SSD space could be provided using a NAS setup, but right now the cost would be too high for a "Unlimited" Webhosting Provider IMO.
I'll also chip in that most of my...
I built a major gaming rig last year, and my opinion is that you want the SSDs in Raid 1. More than Raid 1 seems pointless to me for a home computer, if a drive dies you'll replace it, but meanwhile you're online. The odds of 2 drives dying at the same time is low. I don't trust SSDs to ever...