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diskette


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DEFINITION - A diskette is a random access, removable data storage medium that can be used with personal computers. The term usually refers to the magnetic medium housed in a rigid plastic cartridge measuring 3.5 inches square and about 2millimeters thick. Also called a "3.5-inch diskette," it can store up to 1.44 megabytes (MB) of data. Although many personal computers today come with a 3.5-inch diskette drive pre-installed, some notebook computers and centrally-administered desktop computers omit them.

Some older computers provide drives for magnetic diskettes that are 5.25 inches square, about 1 millimeter thick, and capable of holding 1.2 megabytes of data. These were sometimes called "floppy disks" or "floppies" because their housings are flexible. In recent years, 5.25-inch diskettes have been largely replaced by 3.5-inch diskettes, which are physically more rugged. Many people also call the newer hard-cased diskette a "floppy."

Magnetic diskettes are convenient for storingindividual files and small programs. However, the magneto-optical (MO) disk is more popular for mass storage, backup, and archiving. An MO diskette is only a little larger, physically,than a conventional 3.5-inch magnetic diskette. But because of the sophisticated read/write technology, the MO diskette canstore many times more data.

Learn more about Disk drives
Storwize claims good data compression rates, no performance degradation on STN-6000 appliance: Storwize's STN-6000 inline appliance acts on primary storage using real-time compression.
NetApp: Post-process deduplication limits performance hit in primary storage data deduplication: NetApp's approach to primary storage data deduplication limits the performance penalty to about 20% percent.
Best practices for solid-state drive storage technology: SSD best practices center on identifying I/O-intensive applications so that data storage technology can provide the greatest benefit to IT organizations.
Tiered storage tutorial: Find out what tiered storage is, the key technologies behind it, and how tiered storage can lower operational costs while improving application performance.
Podcast: Solid-state drives entering enterprise storage environments: Jeff Janukowicz, research manager at IDC for solid-state drives and hard drive components, discusses the impact SSDs are expected to have at the enterprise level.

LAST UPDATED: 07 Jul 2005

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