RSync type software without extra installations

I have a backup software wherein I replicate files using FTP / Simple copy.
This consumes time and bandwidth for large files.
Can I use any delta copy software to just copy the large files without encryption and
without having to install extra users and services etc.
I use Delphi on Windows.
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Ankit PareekOnline MarketingCommented:
I think if you are using backup software then it may be not allowed to other software to copy data. If you just want to copy data from one drive to other drive after backup process complete can eaisly use delta copy , tera copy and many other softwares
Mr TorturSystem EngineerCommented:
why not use robocopy?
Allan_FernandesAuthor Commented:
Sorry I was not clear. I am the developer of the backup software. I use Delphi on Windows.
So to speedup the backup process I wanted to use Delta copying methods just on very large files and these would just be handful of files on my customers machines. The smaller files I just check the date and time and copy if required.
Allan_FernandesAuthor Commented:
Does Robocopy do delta copy ?
Mr TorturSystem EngineerCommented:
yes, with /MIR for example.
Just check all the options in a command prompt with robocopy /? or here you are with some details :

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