title: Disk cache
text: # Disk cache
  
  Disk cache may refer to:
  
  * Disk buffer, the small amount of RAM embedded on a hard disk drive, used to store the data going to and coming from the disk platters
  * Page cache, the cache of data residing on a storage device, kept by the operating systems and stored in unused main memory
  * General application-level caching of the data residing on a storage device
  