Topic 1.1.11 – 1.1.13 System Backup

1.1.11 – Identify a range of causes of data loss

Data loss refers to an error condition where data is lost or destroyed due to system failure, storage negligence, or even transmission or processing errors.

Various precautions can be taken, in order to prevent or restore data loss, through both hardware and software.

The cost of data loss depends on how costly it may be to go on without the data, how costly it may be to recreate the data, as well as how costly it may be to notify users of data loss.

1.1.12 – Outline the consequences of data loss in a specified situation

In nearly all cases data loss is something that we all want to avoid

In some instances doss loss can have extreme consequences

If important medical records are lost a patients life may be endangered

If subscription data is lost it could cost the company a large sum of money as they will be unable to charge customers the correct amount.

Data loss can have extreme consequences on both the owner of the data and the person who the data has been collected about
  • 1.76 billion individual records leaked in Jan 2019.
  • 91% of cyber attacks results from phishing emails.
  • 3.6m dollars -cost of average data breach.
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1.1.13 Describe a range of methods that can be used to prevent data loss

  • Regular backup of files using hard disks or magnetic tapes
  • Firewall installation
  • Data storage in two or more locations (offsite storage)  
  • Removed hard copies (printed versions of data)
  • Installation of Anti Virus program uHuman error reduction techniques and/or failsafe (accidentally deleted files)
  • Online auto save backup (iCIoud, Dropbox)

In computers science, redundancy is the duplication of storage devices and stored data of a computer system with the intention of securing the stored data. It is considered as a failsafe method.

Diskettes, Blu-ray discs, CDs, DVDs, USB (Universal Serial Bus) are removable media that are used for fast data backup and data storage. These removable media can store data permanently and are nonvolatile.

Failover Systems

A failover system is a computer system which is on standby capable of switching to a spare computer system upon hardware failure, network failure, or any other type of error, such as software malfunction.