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[1] [2] Drums were widely used in the 1950s and into the 1960s as computer memory. Many early computers, called drum computers or drum machines, used drum memory as the main working memory of the computer. [3] Some drums were also used as secondary storage as for example various IBM drum storage drives and the UNIVAC FASTRAND series of drums.
Tertiary storage or tertiary memory [7] is a level below secondary storage. Typically, it involves a robotic mechanism which will mount (insert) and dismount removable mass storage media into a storage device according to the system's demands; such data are often copied to secondary storage before use. It is primarily used for archiving rarely ...
Single-level storage (SLS) or single-level memory is a computer storage term which has had two meanings. The two meanings are related in that in both, pages of memory may be in primary storage or in secondary storage (disk), and that the physical location of a page is unimportant to a process.
A RAM drive (also called a RAM disk) is a block of random-access memory (primary storage or volatile memory) that a computer's software is treating as if the memory were a disk drive (secondary storage).
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A direct-access storage device (DASD) (pronounced / ˈ d æ z d iː /) is a secondary storage device in which "each physical record has a discrete location and a unique address". The term was coined by IBM to describe devices that allowed random access to data, the main examples being drum memory and hard disk drives. [1]
a sensory register, where sensory information enters memory, a short-term store, also called working memory or short-term memory, which receives and holds input from both the sensory register and the long-term store, and; a long-term store, where information which has been rehearsed (explained below) in the short-term store is held indefinitely.
Also, the storage process can become corrupted by physical damage to areas of the brain that are associated with memory storage, such as the hippocampus. [ 20 ] [ 21 ] Finally, the retrieval of information from long-term memory can be disrupted because of decay within long-term memory. [ 2 ]