What is disk caching?
by 
answerbag-guy
ANSWERS: 2
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A disk cache is a mechanism for improving the time it takes to read from or write to a hard disk. Today, the disk cache is usually included as part of the hard disk. A disk cache can also be a specified portion of random access memory (RAM). The disk cache holds data that has recently been read and, in some cases, adjacent data areas that are likely to be accessed next. Write caching is also provided with some disk caches.
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Cache is the space ( may be also in RAM, so the access time is very less compared to that of hard disk), where the frequently used data is saved. And the mechanism is called caching or disk caching.
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