Backup software is those which help to create the backup files of the users’ data, files, database, server, etc. to another different location which may be another system, removable devices, etc. Backup is done to avoid accidental data loss due to system crash or any other unexpected disaster. So, it is very important to create backup files for the data present on the computer.

File sync involves the creation of the second copy of data which can be used in case of the original data files are lost. Here comes the use of the backup software. Before the advent of this software, the backup of files and data was done on the floppy or magnetic disc tapes which was not considered to be reliable as there is no guarantee whether a floppy or disc containing the backup files may open or not on another system. But now there is a number of backup software available in the market that helps in this regard. They take few minutes to install and are designed in a user friendly format, however, some of them have a complex interface and hard to understand instructions.
Uses and merits of backup software

The backup software used for the following reasons:
• These software help to prevent data from partial or complete loss by automatically creating backup files.
• They make the backup files in compressed standard zip format to save the storage space.
• Some software gives the option of encrypting the backup data files to protect them from unauthorized usage.
• They can backup data to FTP files format.
• Backup can be made on CDs or DVDs as required by the user.
• Using backup software, backup files can be saved in less time on any local or network drives.
• They help to make backup on Blu-ray or other removable media including USB, flash drives, etc.
• Some software allows the backup of the Favorites, Outlook data and other system files in addition to email and user data.
• The scheduling plug-ins working with the backup software saves the time by making backup in less time.
• Some software include the facility of performing full, incremental, differential or mirror backup files of the original data.
• Some software performs the virus checking before creating backup.
Demerits of backup software
Besides many merits of the folder compare software, there are also a few demerits associated with it. Some of these are:
• Some backup software have complex user interface which is difficult to understand by an average user.
• Some software lacks the option of encrypting the backup files which has become the need of many users.
• Some software does not perform the verification of the backup files.
• Application files can be retrieved from the backup folder only if their respective application software is installed on the system.
• Some users use the online backup facility to backup their data; however, they are full dependent on the internet connection to retrieve their data.