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Auxiliary memory, also known as secondary memory, refers to any type of non-volatile storage media that is used to store data or information for an extended period of time. This type of memory is different from primary memory or RAM, which is volatile and is used for temporary storage while a computer or other device is running.Examples of auxiliary memory include hard disk drives, solid-state drives, magnetic tape, and optical discs such as CDs and DVDs. These storage devices are used to store data that is not currently being used by the computer's processor, but may be needed later.Auxiliary memory is typically slower than primary memory, but it can store much larger amounts of data. It is also less expensive than primary memory, which is why most computers and other devices use a combination of both types of memory to provide a balance of speed and storage capacity.