backing up and archiving data n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Backing up and Archiving Data PowerPoint Presentation
Download Presentation
Backing up and Archiving Data

Loading in 2 Seconds...

play fullscreen
1 / 15

Backing up and Archiving Data - PowerPoint PPT Presentation


  • 215 Views
  • Uploaded on

Backing up and Archiving Data. Chapter 1. Introduction. This presentation covers the following: What is backing up What is archiving Why are both necessary?. Backing up. Backing up data is a practice that all organisations and people who work with data should do.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Backing up and Archiving Data' - stacy


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
introduction
Introduction
  • This presentation covers the following:
    • What is backing up
    • What is archiving
    • Why are both necessary?
backing up
Backing up
  • Backing up data is a practice that all organisations and people who work with data should do.
  • Some people consider data to be a company’s most important asset.
  • The loss of any data can have a detrimental impact on an individual or an organisation (no matter the size).
  • Backing up data is simply making a copy of current data.
backing up1
Backing up
  • There are many causes of data loss:
    • Loss of power
    • Hardware failure
    • File corruption
    • Viruses
    • Hackers
    • Theft of equipment
    • Sabotage of an employee
    • Espionage by a rival company
    • Natural Disaster
    • Honest blunders!
    • Accidently misplacing data
backing up2
Backing up
  • Back ups can be used to restore lost files by replacing them with a previously saved file.
  • You might not always get the most up-to-date file but consider the alternative...starting your work from the beginning again!
methods of backing up
Methods of backing up
  • There are many devices which can be used to back up files:
    • External memory: Memory cards, USB pen drives
    • External hard drive
    • Tape
    • Making an exact copy of a disk
backing up3
Backing up
  • In the event that you need to find a file which has been backed up you need to be able to find the file you need!
  • This means that back ups need to be organised.
  • If you have made several backups of a file you need to be able to tell which is the most recent backup!
things to consider
Things to consider
  • How often do you need to back up?
  • How far should your backups go?
    • Days
    • Weeks
    • Months
archiving
Archiving
  • Archiving is for long-term storage of data that is not required immediately.
  • More often than not it is never required again but it kept just in case.
  • Data is often removed from a system and stored separately.
archiving1
Archiving
  • Consider the following example:
  • A school records data about pupils’ performance every year. If they continued to collect data, even after pupils had left school, the system resources would soon diminish.
  • Instead, records about pupils are removed from the system once they leave.
  • However, some data may be archived such as average test scores and achievement rates. The data is not needed immediately but may be useful to keep for the future.
archiving2
Archiving
  • Schools often keep full records about pupils for up to seven years.
  • Schools often receive requests to complete references and use the data in their archives to compile them.
archiving procedure
Archiving Procedure
  • Copy the file onto the archival media.
  • Verify the copied files (i.e. Making sure the copies are the same).
  • Delete the original records from the system.
reasons for archiving
Reasons for archiving
  • Free up system resources
    • Less hard disk space required
  • Increase system performance
    • Searches take less time as their is less data to search through
    • Takes less time to make backups of the system as there is less to copy!
take note
Take note:
  • Using an example, define what is meant by the term ‘back-up’.
  • Using an example, define what is meant by the term ‘archive’.
  • Why is it important to back up data?
  • What is the difference between archiving and back-up of data?
  • What storage medium should be used for archiving?
remember
Remember

Archiving is removing!

Backing up is copying!