Avoiding unnecessary multiple reads of I/O Device data

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Avoiding unnecessary multiple reads of I/O Device data

To avoid unnecessary reads of an I/O Device, you can use data caching to temporarily store data read from the device in the memory of the I/O Server. This means that if the I/O Server receives more than one request for device data in a short time period, instead of contacting the I/O Device a second time and reading identical data, it can retrieve the data from the cache.