Final answer:
RAID is a method of data storage that allows writing to multiple storage devices, providing fault tolerance and data protection.
Step-by-step explanation:
The type of resiliency described in the question is known as RAID (Redundant Array of Independent Disks). RAID is a method of data storage that allows data to be written to multiple storage devices, providing fault tolerance and data protection. There are different levels of RAID, each with its own pros and cons. One such level is RAID 1, also known as disk mirroring.
In RAID 1, data is written to two storage devices simultaneously, creating an exact replica of the data on both drives. If one drive fails, the data can still be accessed from the other drive, preventing data loss. RAID 1 requires at least two storage devices to implement.
For example, if you have two hard drives in a RAID 1 configuration and one of the drives fails, you can still access all your data from the other drive. This protects you from a single storage device failure.