Storage Requirements

Question 1

Hard Disk Drives

Answer 1

Large capacity magnetic storage devices

Offer fast access speeds required to deliver loading times required by web pages and database updates/queries

Question 2

External devices

Answer 2

Solid state USB flash drives - store data onto flash memory

External hard disk drives

Question 3

Speed of data transfer

Answer 3

Limited by type of interface used to connect them

Question 4

Two most common interface types

Answer 4

Universal Serial Bus

Firewire

Question 5

Software Distributed on

Answer 5

Optical disks such as CDs, DVDs and Blu-Rays

Question 6

ROM disks

Answer 6

Read-Only
Prevents accidental deletion or modification of the distributed software
Databases copied from ROM to allow editing when modified

Question 7

RW Disks

Answer 7

Rewritable to allow data to be updated without copying to another storage medium

Question 8

Backing storage

Answer 8

Majority of executable programs will be installed onto backing storage before use
Amount of backing storage required should be considered carefully as excessive requirements could result in installation problems for users with limited available storage

Question 9

Backup strategy

Answer 9

Information systems should be backed up to ensure against data loss
Backup strategy should be considered when systems are designed and implemented
Backups taken regularly and stored in remote location

Question 10

RAID

Answer 10

Redundant Array of Independent Disks
Installed to protect against hardware failure
Uses banks of hard disk drives to produce two copies of every file on a separate disk
If one hard disk in the bank fails, the other is recreated on a new drive from the duplicate copies on the other hard disks in the array

Question 11

What is stored on an Internal Hard Disk Drive?

Answer 11

Webpages, database data and applications