Re RAID

No there is no particular need for raid per se but you still want to carve these up into logical units to support whatever applications you're going to use them with, eg, multiple storage areas for database data, logs and so on.

Re OMFG, you can grab some now from Sun, yes you might want to store up a few days interest on your lottery million first.

http://uk.sun.com/products/complementary/pricebook/ssd4/