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You have to use Vibosoft free data backup software http://www.vibosoft.com/free-data-backup-windows.html
There are many companies that allow you to backup data online. Examples of companies that allow you to backup data online include Carbonite Online Backup and My PC Backup.
By performing a bit-by-bit comparison of the backup medium with the originalsource data.
Magnetic tape backup of your data is done with a magnetic tape data storage system. You can use digital recording to store your digital data on the magnetic tape as a backup.
Data backup and recovery are essential for safeguarding data, ensuring business continuity, meeting regulatory requirements
Continuous backup
A Backup Exec keeps a backup of all the work. They ensure the stability and protection of data especially during disk-to-disk transitions. Basically they help protect and store backup of data.
"Backup" refers to making a copy of your important data. This is done because the data may be changed, or damaged."Recovery" means that you get an older copy of your data back, from the backup copy.
Some of the highest rated data storage backup programs are MyPc Backup, OpenDrive, and DropBox. Other good rated data storage backups are SugarSync, Norton, and IDrive.
By restoring part of the backup
Online backup means to backup you system data from your hard drive to an online cloud server
The cost for an online data backup for 500GB of data will cost about $39.99 a month or $399.90 a year. Naturally, the more GB's of data the higher the price will be.