I finally managed to finish my guide for setting up a distributed incremental & encrypted backup. The idea is to be able to perform backups on remote unRAID servers. Encryption is used to make sure your private data is safe even when saved to a friend's place.

 

The system is based upon:

• chroot sftp using public keys authentication for automatic login
  
• duplicity for the incremental & encrypted backup part (based on rsync, rdiff and gnupg)
  
• duply script which is a wrapper for duplicity
  

 

The guide can be found here:

http://danynativel.com/blog/2012/01/03/distributed-encrypted-backup-between-unraid-machines/

 

Please note that the remote server doesn't have to be an unRAID one. Duplicity supports all kind of backend servers including Amazon S3:

• ftp
  
• hsi
  
• cf+http
  
• imap
  
• imaps
  
• rsync
  
• s3
  
• s3+http
  
• scp
  
• ssh
  
• tahoe
  
• webdav
  
• webdavs
  

 

Please report your experience.

Alphazo

Thank you for the idea. But I don't know how really make it done.