Backup is the activity of copying files or databases so that they will be preserved in case of equipment failure or other catastrophe. Maintaining a 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 are primarily two types of backups that should be considered, local and remote or off-site.
Local Backup #
Backing up critical files to server your site is running on. This approach is the most common used and requires no additional software; however it is also the most risky. There are no provisions for recovery if the server fails.
Internet Backup #
You can also consider sending your files to another site for safekeeping. In case your hard disk crashes, you’ll be able to download them from the safekeeping site.