Having been the leader in 5.25-inch MO technology for over ten years, Sony proudly presents the latest in its MO drive line-up, with the highest performance and more reliability than ever.??At 5.2 GBytes, the SMO-F551 is ideal for data intensive applications such as document imaging, CAD/CAM, graphic design and database processing. The drive offers total reliability with an MTBF (Mean Time Between Failure) of 100, 000 Power on Hours and an MSBF (Mean Swaps Before Failure) of over 750, 000. It will perform well in the most demanding of information technology environments, whether standalone desktop or high-end network.??A generous 4MB buffer memory is controlled by Sony's unique S-Cache algorithm. S-Cache includes sophisticated and proprietary data buffer/caching algorithms and features a high performance RISC CPU. Thus, the S-Cache is the perfect compliment to the high data transfer rates brought about by the drive's fast rotational speed.