Secondary Storage
Disk Caching-
Disk caching is a process of tweaking performance of a computer to boost the speed to access data on a disk by using RAM. The recently accessed data are stored in memory buffer. The more RAM installed in a system unit, the faster the processing speed.
Rebundant Arrays of Inexpensive Disks (RAID)-
Rebundant Arrays of Inexpensive Disks (RAID) is a process of storing data in multiple hard drives at one time. It is also considered in a category of disk drives that combines two or more drives in combination for fault tolerance and performance. RAID allows you to store the same data redundantly (in multiple paces) in a balanced to improve overall performance by placing data on multiple disks. The operations can overlap is a few ways and boost up system performance.
File Compression and Decompression-
File Compression and Decompression is a process similar to encoding and decoding. It transforms a data into a smaller packages from one representation to another, smaller representation from which the original, or a close approximation to it, can be recovered. Data compression has important applications in the areas of data storage and data transmission.
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