Secondary Storage

File compression

The meaning of file compression is to compressed format. There is many operating system and application allow us to enable us to pack a bigger file into small file so that it can take up less memory to save our computer memory. For example , WINRAR.

Head crash

Head crash is a disk drive malfunction. A head crash usually means that the head has scratched or burned the disk. if dust come between it and the disk, it can touch the disk. When this happens, we usually lose much of the data on the hard disk and will need to replace both the head and the disk.

Internet hard drive

Internet hard drive is a mechanism that reads and write data on a internet hard drive. Hard disk drives (HDDs) for PCs usually have seek times about 12 milliseconds or less. Many disk drives improve their performance through a thing called caching.

Optical Disc Drive

Optical disc drive is a storage medium from data is read and it is written by laser. Optical disks can store much more data up to 6 gigabytes (6 billion bytes) There are three basic types of optical disks which is CD-ROM , WORM and erasable.

Solid State Storage

Solid state storage is a removable storage medium that employs integrated circuits rather than magnetic or optical media. It is also contains of large-capacity than other storage devices.