Secondary Storage

Disk Caching

Disk Caching is a mechanism for improving the time it takes to read from or write to a hard disk. It improves hard-disk performances by anticipating data needs.  It also provides a temporary high-speed holding area between a secondary storage device and the CPU.

File Compression

File compression is not limited to hard-disk system and it is frequently used to compress files or floppy disks. It helps to speed up transmission of files from one computer to another. It scan files for ways to reduce the amount of required storage.

File Decompression

Data compression is where it is the opposite if file compression that expand compressed files. Decompression of file archives can be achieved on all computers, but live decompression of video requires much more powerful hardware.

Internet Hard Drive

Internet Hard Drive is a special service site on the Web that provide users with storage. It is in low cost and it is flexible to access information from any location using the Internet. Internet hard drive will allow you to "deposit" your computer files into a remote hard drive, and then later access those very same files from any other computer.

Optical Disc Drive

Optical disc drive (ODD) is a disk drive that uses laser light or electromagnetic waves near the light spectrum as part of the process of reading or writing data to or from optical discs. 1s and 0s are represented by pits and lands.

Solid-state storage

Solid-state storage is a nonvolatile device that have no moving parts and are more reliable and required less power than hard disks. Data  and information are stored and retrieved electronically directly from these devices much as they would be from conventional computer memory.