Sequential access memory
In computing, random access memory (RAM) where data can be accessed in any order. Sequential access devices are usually a form of magnetic storage or optical storage.[1][2]
While sequential access memory is read in sequence, arbitrary locations can still be accessed by "seeking" to the requested location. This operation, however, is often relatively inefficient (see
rotational latency
).
Magnetic sequential access memory is typically used for
non-volatility. Magnetic tape is a type of sequential access memory still in use; historically, drum memory
has also been used.
See also
- Sequential access
- Basic sequential access method (BSAM)
- Queued sequential access method (QSAM)
- Secondary storage
- Hard disk drive
- Solid state drive
- Magnetic storage
- Magnetic tape
- Drum memory
- Locality of reference
- Streaming media
References