1.
access time: measures the amount of time it takes a storage device to locate an item on a storage medium or the time required to deliver an item from memory to the processor
2.
allocation unit: each cluster that consist of two to eight sectors
3.
capacity: is the number of bytes a storage medium can hold
4.
cd r: compact dis recordable is a multisession optical disc on which users can write but not erase their own items
5.
cd rom: compact disc read-only memory is a type of optical disc that users can read but not write or erase
6.
cd rw: compact disc rewritable is an erasable multisession disc you can write on multipe times
7.
cloud storage: an internet service that provides storage to computer users
8.
cluster: the smallest unit of disk space that stores data and information
9.
cylinder: is the vertical section of a track that passes through all platters
10.
disk cache: sometimes called a buffer consists of a memory chips on a hard disk that stores frequently accessed items such as data instructions and information
11.
EIDE: is a hard disk interface that uses parallel signals to transfer data instructions an information
12.
express card module: a removable device about 75 mm long that fits in a slot
13.
external hard disk: a separate freestanding hard disk that connects with a cable to a usb port or fire wire port on the system unit or communicates wirelessly
14.
fixed disk: a hard disk that is mounted inside the system unit
15.
formatting: the process of dividing the disk into tracks and sectors so that the operating system can store and locate data and information on the disk
16.
hard disk: also called hard drive is a storage device that contains one or more inflexible circular platters that use magnetic particles to store data instructions and information
17.
head crash: occurs when a read/write head touches the surface of a platter usually resulting in a loss of data or sometimes loss of the entire disk
18.
longitudinal recording: aligned the magnetic particles horizontally around the surface of the disk
19.
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
20.
memory card: a removable flash memory device usually no bigger than 1.5 inches in height or width
21.
microfilm: stores microscopic images of documents on a roll or sheet film
22.
network attached storage: NAS device is a server connected to a network with the sole purpose of providing storage
23.
optical disk: is a type of storage media that consists of a flat, round, porable disc made of metal plastic and lacquer that is written and read by a laser
24.
perpendicular recording: hard disk align the magnetic particles vertically or perpendicular to the disks surface making much greater storage capacities possible
25.
picture cd: a single session cd rom that stores digital versions of film using a jpg file format at lower resolution
26.
platter: made of aluminum, glass or ceramic and is coated with an alloy material that allows items to be recorded magnetically on its surface
27.
reading: is the process of transferring these items from a storage medium into memory
28.
redundant array of independent disk: RAID is an ideal storage solution for users who must have the data available when they attempt to access it
29.
removable hard disk: a hard disk that you insert and remove from a drive
30.
revolutions per minute: allows nearly instant access to all tracks and sectors on the platters
31.
SATA: uses serial signals to transfer data, instructions, and information
32.
SCSI: interfaces which also use parallel signals can support up to eight or fifteen peripheral devices
33.
smart card: which is similar in size to a credit card or atm card stores data on a thin microprocessor embedded in the cared
34.
solid state drive: ssd is a storage device that typically uses flash memory to store data instructions and information
35.
storage device: is the computer hardware that records and/or retrieves items to and from storage media
36.
storage medium: also called secondary storage is the physical material on which a computer keeps data, instructions and information
37.
tape: a magnetically coated ribbon of plastic capable of storing large amounts of data and information at low cost
38.
track: a narrow recording band that forms a full circle on the surface of the disk
39.
USB flash drive: sometimes called a thumb drive is a flash memory storage device that plugs in a USB port on a computer or mobile device
40.
writing: is the process of transferring data, instructions and information from memory to a storage medium
