RAID 10 is a data storage technique that combines the benefits of RAID 1 and RAID 0. It mirrors data across multiple drives for redundancy, ensuring that if one drive fails, the data remains safe. At the same time, it stripes data across pairs of drives, which enhances performance by allowing multiple read and write operations simultaneously. This configuration requires a minimum of four drives and offers a good balance between speed and data protection. While it provides better performance than RAID 1 alone, it requires more storage capacity since half of the total drive space is used for mirroring.