STORAGE

holds data, instructions and information for future

the physical material on which a computer keeps data, instructions and information

the number of bytes a storage medium can hold

Access files from any computer

Store large files instantaneously

Allow others to access their files

View time-critical data and images immediately

Store offsite backups

Provide data center functions

-a flat, round, portable disc made of metal, plastic, and lacquer that is written & read by a laser
-Typically store software, data, digital photos, movies, and music
-Read only vs. rewritable

A CD-ROM can be read from but not written to

A CD-R is a multisession optical disc on which users can write, but not erase

Kilobytes (KB)

1 thousand

Megabyte (MB)

1 million

Gigabyte (GB)

1 billion

Terabyte (TB)

1 trillion

Petabyte (PB)

1 quadrillion

Exabyte (EB)

1 quintillion

Zettabyte (ZB)

1 sextillion

Yottabyte (YB)

1 septillion

the computer hardware that records and/or retrieves items to and from storage media

contains one or more inflexible, circular platters that use magnetic particles to store data, instructions and information

capacity

platters

read/write heads

cylinders

sector and tracks

revolutions per minute

transfer rate

access time

Process of dividing the disk into tracks and sectors (so that the operating system can store & locate data & information on the disk)

RAID (Redundant Array of Independent Disks

NAS (Network Attached Storage)

internal & external hard disks

external hard disk

removable hard disk

Memory card (removeable flash memory device that you insert and remove from a slot in a computer, mobile device or card reader/writer)

CompactFlash (CF)

Secure Digital (SD)

Secure Digital High Capacity (SDHC)

microSD

microSDHC

xD Picture Card

Memory Stick

Memory Stick Micro (M2)

Tape

Magnetic stripe cards and smart cards

Microfilm and microfiche

Enterprise storage