Secondary Storage

-Disk caching

 Disk caching is basically have the same function as the one in the computers. It improves the hark disk performance by anticipating the data. The hard disk remembers the number of usage of a certain files or program and keeps it in the cache so it can speed the information transfer.

-File compression

 This program can increase the total storage capcity by minimizing the amount of space taken to store certain datas.With compressed files , you can transfer files from one computer to another much more faster than the actual file.People normally send compressed files through the net.


-File decompression

After the file is compressed and sent through the net , the user needs to decompress the files in order to open what is in the folder. By decompressing means taking out the data and put it onto your desktop . This will takes up much more space than the compressed files.


-Internet hard drive

Internet hard drive is a place where you can store your storage and profiles online . These website must be paid in order the get the space on the internet. This can be much faster and more portable than a normal hard drive . However, the files on the internet hard drive are not safe and might be intruded

-Optical DIsc Drive

A optical disc drive is a disk drive from the desktop which uses laser light or electromagnetic waves that reads and writes data from the computer.These Optical disk drive can work on CD,DVD and Blu-Ray disc . Its often used to burn informations onto the disc.

-Solid-state storage

A solid state storage is a data storage device that is able to store persistent data. It uses micro chips to store the datas in the storage and it contains no moving parts