The amount of time it takes the processor to read data, instructions, and information from memory and the time required to deliver an item from memory to the processor.
A more expensive DVD format that has a higher capacity and better quality than standard DVDs, especially for high-definition audio and video.
CD-read-only memory; type of optical disc that users can read but not write on (record) or erase.
CD-rewritable; erasable multisession disc users can write on multiple times.
An Internet service that provides storage to computer users.
Storage device that includes one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information.
magnetic stripe card
A credit card, entertainment card, bank card, or other similar card with a stripe that contains information identifying you and the card.
(Network attached storage) A server that is placed on a network with the sole purpose of providing storage to users, computers, and devices attached to the network. See also storage appliance
Type of storage medium that consists of a flat, round, portable disc made of metal, plastic, and lacquer that is written and read by a laser.
Redundant array of independent disks; a group of two or more integrated hard disks.
Tag that includes an antenna and a memory chip that contains the information to be transmitted via radio waves.
An alternative to a magnetic stripe card, stores data on an integrated circuit embedded in the card.
Solid State Drive - Flash storage device that contains its own processor to manage its storage. Much faster than hard disk, but also more expensive.
A magnetically coated ribbon of plastic that is capable of storing large amounts of data and information at a low cost.
The process of writing on an optical disc.
The number of bits in an area on a storage medium.
Access method where a device can locate a particular data item or file immediately, without having to move consecutively through items stored in front of the desired data item or file. See also random access
Kilobyte - 1 thousand bytes
Petabyte - 1 quadrillion bytes. Same as 1,000 Terabytes
Exabyte - 1 quintillion bytes. Same as 1,000 Petabytes
Gigabytes per second. Note this is different from Gbps, which is Gigabits per second!
Megabyte - I million bytes. Same as 1,000 KB
Gigabyte - 1 billion bytes. Same as 1,000 MB
Terabyte - 1 trillion bytes. Same as 1,000 GB
RAID storage design that writes data on two disks at the same time to duplicate the data. See also level 1
Built-in levels of duplicate components used in enterprise hardware that ensures that if one component fails or malfunctions, another can assume its tasks.
The number of times per minute that a hard disk platter rotates.
The process of copying audio and/ or video data from a purchased disc and saving it on your own media.
Law that provides financial reporting requirements and guidelines for public companies' retention of business records.
The small arcs into which tracks on a disk are divided.
Access method where data is read or written consecutively.
Crime in which thieves use a handheld device to swipe someone's credit or smart card and then obtain and store account details.
solid state media
Media that consist entirely of electronic components, such as integrated circuits, and contain no moving parts.
The speed with which data, instructions, and information transfer to and from a device.
Narrow recording band that forms a full circle on the surface of the disk.