RAID 0 is a data storage technique that combines multiple hard drives into a single logical unit. It splits data into smaller pieces and distributes them evenly across all drives, which enhances performance and increases read/write speeds. However, it does not provide any redundancy, meaning if one drive fails, all data is lost. This configuration is often used in environments where speed is critical, such as gaming or video editing. While RAID 0 maximizes storage efficiency and performance, it is essential to have regular backups since it lacks data protection features found in other RAID levels.