The tools that let you back up files on your computer usually back up your data in two ways. One way is when your entire data (including all files and folders) is backed up fresh every time, and another way is when only the changed files are backed up and the unchanged files and folders are simply linked to from the new backup source. The second option, called incremental backup, is more storage effective since it doesn’t store the unchanged duplicate data every time it does backup.
If you are more comfortable with incrementally backing up your data, check out HardlinkBackup. It is a simple and fast backup program, which uses hard links to store data. It reads the source directories and compares the files with previous backups and then copies only the modified files. If an old backup copy is no longer needed it can be safely deleted.
It is important to note that the underlying system has to be formatted with NTFS and requires Microsoft .NET 4 Framework. While the website of the developer is in German, the program is available in English. Just switch languages from the settings. It is free to download and use for non-commercial purposes. The more advanced paid versions of the program starting from 39 euros have more features including backing up of open files, automated backups, batch mode and other features.
- Incremental backup tool.
- Backs up only the modified files thus saving storage space.
- Requires NTFS file system and Microsoft .NET 4 Framework.
- Supports Windows XP, Vist, 7, 8 and Windows Server editions.
- 32-bit and 64-bit versions available.
- Free to use.
- Similar tools: 4sync, FullSync.
Check out HardlinkBackup @ lupinho.net/hardlinkbackup