What technology is primarily designed to improve reliability and fault tolerance in computer systems?

RAID, which stands for Redundant Array of Independent Disks, is the technology specifically designed to enhance reliability and fault tolerance in computer systems. It achieves this by distributing data across multiple hard drives in such a way that if one drive fails, the data remains accessible through the remaining drives. Depending on the RAID level implemented, it can offer different configurations of data redundancy and performance, allowing for a balance between speed and safety of stored data.

For instance, RAID 1 mirrors data across two drives, ensuring that an exact copy is available if one drive fails. Similarly, RAID 5 and RAID 6 use striping combined with parity, distributing data and parity information across multiple disks to ensure that the loss of one or even two drives won’t lead to data loss.

The other options, while relevant to storage technologies, do not serve the primary function of enhancing reliability and fault tolerance. SATA (Serial ATA) is an interface used for connecting hard drives and SSDs but does not intrinsically provide fault tolerance. SSDs (Solid State Drives) are storage devices that can be faster and more durable than traditional hard drives, though they do not automatically ensure fault tolerance without specific data management strategies. JBOD, which stands for Just a Bunch Of Dis