Why magnetic tape is a serial access medium?

Magnetic tape is considered a serial access medium because data is stored sequentially along the length of the tape. To access a specific piece of data, the tape must be wound forward or backward until the desired point is reached, making the retrieval process inherently linear. This contrasts with random access mediums, where data can be accessed directly without sequential movement. As a result, while magnetic tape is efficient for large volumes of data storage, it is slower for retrieval compared to random access systems.