Hi, I have a 220GB data store that is doing a differential backup on a server in a small town some distance from our main office. In order to protect the data we have decided to backup that data to our main building. I have created a secure ftp site at the main building and want to start a differential backup to the ftp site. Because the amount of data is so large it will practically shut down their internet for a week. What I want to do it go on-site one time, make a full backup on a drive, carry that drive back to the ftp server and copy it to the server. Then tell their server to use that as a base image to perform differential backups once a week over the weekend. Yes the data is a lot, but they don't add very much per week so it should work well once in place. Can someone explain how I would do this?