Module 6: Storage Devices

Storage Devices

Used to save data in which can be stored short-term or long- term

inside, external

Storage devices can be found ____ the computer or outside as _____ peripheral

Primary Memory
Secondary Memory

Two types of storage devices

Primary memory

Also known as the main memory.

Primary memory

Store the data temporarily and can be found inside the computer

Random Access Memory (RAM)
Read Only Memory (ROM)
Cache memory

Examples of primary memory

RAM

Main memory, volatile type of memory

DRAM
SRAM

Types of RAM

ROM

Non-volatile type of memory

ROM

Permanently stores data like programs used by the computer to perform

BIOS
Boot up
Accessing devices

ROM is the chip that is used for ___, ___, ____, etc.

PROM
EPROM
EEPROM
EAROM

Types of ROM

Cache memory

Sometimes CPU memory

Cache memory

The memory chip that makes retrieving of data from the RAM more efficient

L1 cache
L2 cache
L3 cache

Types of Cache memory

Secondary memory

Allows you to store your data in long period of time

Magnetic Storage Device
Optical Storage Device
Solid State Storage

Types of secondary memory

Magnetic Storage Device

Used for desktop and laptop hard disk drives

Magnetic Storage Device

Represents data by magnetizing microscopic particles on a disk or tape surface

Hard disk
Floppy diskette
Cassette tape

Examples of magnetic storage devices

Optical Storage Device

An _____ contains a laser that directs a beam of light toward the underside of the disc

lens, 0s, 1s

In an optical storage device, reflected light is collected by a ____ and converted into __ and __ that represent data

CD
DVD
Blu-ray

Examples of optical storage devices

700, 80

CD: ___ MB, ___ minutes

4.7, 8.5

DVD: Single-sided: ___ GB, Double-layer: ____ GB

25

Blu-ray: ___ GB

Blu-ray

Optical storage device that can hold 1080p videos

Read-only
Recordable
Rewritable

Three categories of optical technologies

Solid State Storage

Stores data in erasable, rewritable circuitry, rather than on spinning disks or streaming tape

Memory card
SSD
USB flash drive

Examples of Solid State Storage

Memory card

a flat, solid state storage medium commonly used to transfer files from digital cameras and media players to computers

SSD

Can be used as a substitute for a hard disk drive

USB Flash Drive

A small, portable plug in to USB port to access/place the data

USB Flash Drive

a portable storage device that plugs directly into a computer’s system unit using a built-in USB connector

Cloud Storage

The technology that allows us to store the data online and refers it remotely

OneDrive

OS provides cloud storage to their users like for Microsoft they have ____

Google Drive
Dropbox

Aside from the developers of OS, there are cloud storage for free like the:

iCloud
Dropbox

Most users Cloud Storage Service

Deleting the files accidentally
Power interruption
Dropping the hardware
Virus

Common Causes of Data Loss