For really large databases, SSDs aren't cost effective (think multi-terabyte). For the smaller sized databases, most will prefer a hybrid SSD-RAID solution(like

For really large databases, SSDs aren't cost effective (think multi-terabyte). For the smaller sized databases, most will prefer a hybrid SSD-RAID solution(like Sun's storage appliances) for cost again. Toku is targeting the niche of people who 1. Don't give a damm about ACID. 2. Can't afford hybrid SSD solutions. Toku's indexing technology would be worthwhile at the higher end also, and people with multi-terabytes of information at that end usually use a database as a persistence backend rather than a ACID RDBMS. (think FACEBOOK or your-next-large-startup). Those with a need for ACID, are already running Oracle (which lacks this technology AFAIK). I sense an Oracle-buy-me exit strategy.