Storage Flashcards
holds data, instructions, and information for future use
Storage
is the physical material on which a computer keeps data, instructions, and information
Storage medium
is the number of bytes a storage medium can hold
storage capacity
is the computer hardware that records and/or retrieves items to and from storage media
storage device
is the process of transferring items from a storage medium into memory
reading
is the process of transferring items from memory to a storage medium
writing
measures the amount of time it takes a storage device to locate an item on a storage medium
access time
contains one or more inflexible, circular platters that use magnetic particles to store data, instructions, and information
hard disks
can store data using longitudinal recording or perpendicular recording
hard disks
Characteristics of a hard disk include:
- capacity
- platters
- read/write heads
- cylinders
- sectors and tracks
- revolutions per minute
- trafer rate
- access time
occurs when a read/write head touches the surface of a platter
head crash
is a group of two or more integrated hard disks
raid
device is a server connected to a network with the sole purpose of providing storage
Network Attached Storage (NAS)
is a separate free-standing hard disk that connects to your computer with a cable or wirelessly
external hard disk
is a hard disk that you insert and remove from a drive
removable hard disk
Internal and external hard disks are available in miniature sizes
pocket hard drive
consists of a special-purpose chip and electronic circuits that control the transfer of data, instructions, and information from a disk to and from the system bus and other components of the computer
disk controller
are a type of solid state media and contain no moving parts
Flash memory chips
Solid state drives (SSDs) have several advantages over magnetic hard disks:
- Faster access time
- Faster transfer rates
- Generate less heat and consume less power (G.L.H.C.L.P)
- Last longer
is a removable flash memory device that you insert and remove from a slot in a computer, mobile device, or card reader/writer
memory card
memory card:
- Compact flash
- Secure digital
- secure digital high capacity
- microSD
- microSDHC
- xD picture card
- memory stick
- memory stick micro (M2)
plug into a USB port on a computer or mobile device
USB flash drives
is a removable device that fits in an ExpressCard slot
ExpressCard module
is an Internet service that provides storage to computer users
cloud storage