Topic 3: Managing Digital information on a Computer

Backup is the activity of copying files or databases so that they will be preserved in case of equipment failure or other catastrophe. Backup is usually a routine part of the operation of large businesses with mainframes as well as the administrators of smaller business computers. For personal computer users, backup is also necessary but often neglected. The retrieval of files you backed up is called restoring them.

There hardwares that can help one back-up

• Hard disk.
• SD Card
• DVD, CD.
• Flash.
• Cloud backup.
• External hard drive.  

We need to back-up so we are able to restore lost or damaged information

http://searchstorage.techtarget.com/definition/backup