Write small "dropbox" cloud storage

Hi, I need a easy dropbox like feature to sync data between pc and ipad But dropbox needs to pay per Gb I have own vps server I want to use so I have my own GB. But like dropbox it would be great to have local folder to store/move data in. and it automatic syncs to the vps. I can use FTP but this is alot of hassle. Open ftp connect choose files upload. etc.. Easy step would be. Copy to folder done. In the back it encrypts/uploads the files to the "cloud". Then on the ipad I can access the same "cloud" folder and open word documents in there.