Vertica used last week’s TDWI Conference to announce its FlexStore for Flash in 
Vertica & Flash: Runaway Performance at a Low Price. Good stuff, more vendors should provide that flexibility around different data tiers. Although I’m not sure we need all that (flexibility comes with complexity, and complexity it bad, but I guess you knew that already). Curt Monash of DBMS2 also commented about this, and used the opportunity to ramble about temp space, in Vertica’s innovative architecture for Flash, plus more about temp space than you perhaps wanted to know.