Data Robotics has been quietly raking in the dough (and trying to match up supply with demand) ever since it launched its 8-bay DroboPro back in April, and now the company is making yet another bold move: doubling its product line. Starting today, the traditional 4-bay Drobo will be joined by the quicker Drobo S, and the DroboElite will be added at the high end for those in the enterprise. The Model S ups the ante by adding a fifth drive bay in order to allow for two drives to fail without any data being lost -- a feature that was previously reserved for the aforesaid Pro. It's also boasting an ARM chip with a 50 percent faster clock (compared to the Drobo), enabling the FireWire 800 performance to see a 20 to 25 percent boostt; moreover, an eSATA