RAID is an acronym for redundant array of independent disks, were created to combine multiple, less expensive disks into a single high capacity and faster volume. It was created to combine multiple, less expensive disks into a single high capacity and faster volume and was designed to facilitate redundancy. The most common levels are RAID 0, RAID 1 and RAID 5. To know more about RAID, follow: http://it.toolbox.com/blogs/hardware-tech-windows/raid-what-is-it-and-do-i-need-it-70561