Saturday, January 22, 2011

Secondary Storage

File Compression:
The process of reducing the overall number of bits and bytes in a file (making the file smaller) so it can be sent faster over a slow internet connection or increasing storage capacity by reducing the amount of space required to store the data in storage devices.



Head Crash:
A hard-disk malfunction that is caused by the collision of the read-write head and the magnetic recording surface. It usually means that the head has scratched or burned the disk, resulting in permanent and usually fatal damage to the disk surface.












Internet Hard Drive:
The internet hard drive is a low cost online storage system, where files, documents and other digital items can be stored online and can be accessed at any location on a computer with an internet connection.












Optical Disc Drive:
A disk drive that can retrieve or store data by reading or writing the information on to or from optical discs like CDs, DVDs, Blu-Ray and more by laser.



Solid-State Storage:
A removable data storage device that can store information. The data stored can be retrieved or stored electronically directly to and from the device. It is different from secondary storage devices because unlike secondary storage, solid-state storage has no moving parts.

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