Two of the most widely used approaches to improve disk I/O performance are disk scheduling and disk cache.

Name: Two of the most widely used approaches to improve disk I/O performance are disk scheduling and disk cache.
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Disk scheduling aims to optimize access to the hard disk by deciding which requests to handle first, while disk cache uses a portion of the RAM to store frequently accessed data for faster access times. Both these approaches are commonly used to improve disk I/O performance.

Two of the Most Widely Used Approaches to Improve Disk