Definition of backing store in English:

backing store

noun

Computing

单词	backing store
释义	Definition of backing store in English: backing store noun Computing A device for secondary storage of data that typically has greater capacity than the primary store but is slower to access. 〔计算机〕后备存储器 Example sentencesExamples This is set because our filesystem will live entirely in RAM and will not have a backing store of the data on any physical device, like a disk. If this page is subsequently evicted to backing store, it will be read from there on further page faults. Maybe backing store support is still fully maintained and perhaps we are simply not using it correctly. Although relational databases cover 90% of use cases, there are times when different backing stores are handy. These defaults will be returned if no preference value has been set, or if the backing store is inaccessible.
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