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secondary storage

Storage architectures are designed to optimally meet the various requirements for storing programs and data. The storage hierarchies that build on this are concerned with access times, data spin-off and medium- and long-term archiving. From this catalog of requirements, a storage hierarchy has been formed consisting of primary storage, secondary storage and tertiary storage.

While primary memory, i.e. the main memory, stores the data with which the processor is actively working, the main memory stores the data that is no longer required for the active computing process or that has already been calculated in the secondary memory. The main memory is connected to the secondary memory via an I/O bus.

Overview of local, central and background memory

Overview of local, central and background memory

The secondary memory has a much higher storage capacity compared to the primary memory. It is a permanent memory that can store data for a long time. However, the access time is slower. Hard disk drives( HD), solid state drives (SDD), flash memory and optical storage such as compact discs( CD), DVDs and Blu-ray discs( BD) serve as secondary storage. Previously, other secondary storage media included mechanical storage such as punched cards and punched tape, and floppy disks as magnetic storage.

Englisch: secondary storage
Updated at: 28.11.2018
#Words: 200
Links: data, medium, archiving, hierarchy, primary storage
Translations: DE

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