RAID 1: Data Mirroring for High Availability and Fault Tolerance

RAID 1 (Redundant Array of Independent Disks 1) is a type of data storage technology that involves mirroring data across multiple disk drives. In RAID 1, two or more hard drives are used, and data is duplicated on each drive. This provides redundancy and fault tolerance in case one drive fails. \n\nIn a RAID 1 configuration, all data is written to each drive simultaneously, ensuring that the same data is stored on both drives. This means that if one drive fails, the other drive can still be used to access the data. RAID 1 offers excellent data protection and high availability, as the system can continue to operate even if one drive fails. \n\nHowever, RAID 1 has some drawbacks. It requires at least two drives, which means that the total usable storage capacity is limited to the size of a single drive. Additionally, RAID 1 does not provide the performance benefits of other RAID configurations, such as increased read/write speeds. \n\nRAID 1 is commonly used in situations where data integrity and availability are critical, such as in servers or important databases. It provides an extra layer of protection against data loss and ensures that systems can continue to operate even in the event of disk drive failures.