It is important to backup your files because computers, because of their nature, are likely to crash for various reasons, consequently losing all data. If you backup your files the possibility of losing data is eliminated.
A backup copy.
The files which store the copy of your original data are called backup files. In windows backup files are created by NTbackup utility and windows backup and restore utilities. These backup files have .bkf file extension.
Backup drives are used to backup files and data. Backup drives can be used for backing up data up if you are going to restore or reset the computer to factory settings so you don't lose any important files.
If files get lost, you can easily retrieve them back.
backup important files
You need to backup all important files
Backing up files means making copies of important files so you don't lose all of your work when something goes wrong (power outage, hard drive failure, stolen computer, etc.) If you have never lost any important information and feel like you don't need to backup your files, you are in for a rude awakening when it eventually happens.
selective backup
One can read reviews of computer backup services online on websites, such as CrashPlan+, Backblaze, Mozy and Carbonite. Computer backup services are useful for backup of important files.
Five type of backup they are :1. Normal backup - It copy all the files marked in to be backup2. Incremental backup - only those files that have been created or changed since last incremental or normal backup.3. Decremental backup - The only copies files that have been created or changed since the last normal or incremental backup4.copy backup - It copy all the files u have selected5. Daily backup - It copy all the files u have selected that have been modified on the day
Backup Files Wizard enables the user to restore individual files as needed and with Complete PC you can restore the entire system.
.bkf files are backup files are are created by windows build-in backup utility NTbackup or Windows Backup and Restore (in XP). These utilities support image-based full system backups.