MySQL Scaling -- From 1 to N as easily as possible

MySQL is the most popular databse on the web but how do you grow from that one server you used for development to cover growth.  Is the way to scale for writes different that scaling for reads?  How does DRBD work and how does it compare to MySQL Cluster?  How do I feed Hadoop efficiently? Where does the new Fabric tool from MySQL fit in or are you going to need to change your application to match your sharding practices? Does High Availablity mean slow response?  To learn the answers to these questions, please attend this session!