In computing, sequential access memory (SAM) is a class of data storage devices that read their data in sequence. This is in contrast to random access memory (RAM) where data can be accessed in any order. Such devices are usually a form of magnetic memory.
While sequential access memory is read in sequence, accesses can still be made to arbitrary locations by "seeking" to the requested ___location. This operation, however, is often relatively inefficient (see seek time, rotational delay).
Magnetic sequential access memory is typically used for secondary storage in general-purpose computers due to their higher density at lower cost compared to RAM, as well as resistance to wear and non-volatility. Examples of SAM devices still in use include hard disks, CD-ROMs and magnetic tapes. Historically, drum memory has also been used.
See also
- Random access memory
- Sequential access
- [[ithhffvfbhsbvlbflvblhfbvhbn 4hphpp 5hbllllllllllbjfljkennjnnjknjkn;h;hgrdj,b, m bbkbeekubku7tbl fih; fh sdhf w3u8 h
- Magnetic storage
- Disk storage
- Hard disk
 | This computer-storage-related article is a stub. You can help Wikipedia by expanding it. |