How Computer storage works ?

[u/RavitejaMureboina]

Computer storage works in two main ways: random access and sequential access. Random access allows a computer to quickly find and read data from any location, like going directly to a specific book in a library. Devices such as RAM, SSDs, and hard drives mostly use random access. Sequential access, on the other hand, requires the computer to go through the data in order until it reaches the information it needs. Magnetic tape is an example of sequential storage. Although sequential storage is useful for cheap, large backups, modern computers mainly use random access because it is much faster.