Looking for application to clone a disk with incremental backup

[Joe Zeff]

On 09/10/2015 02:14 PM, Rick Stevens wrote:
> Sparse file support on the backup medium is also very useful if the
> backup program supports it. If the utility has compression support,
> that's also a benefit to conserve space on the backup medium.

My backup program uses rsync for the heavy lifting.  As I back up to a 
flash drive, I ended up reformatting it to ext4 to get symlinks.  I 
presume that anybody using an external hard drive would have it 
formatted appropriately.