Hi can anyone recommend an app for backing up my media collection to external hard drive, collection to large for cloud backup. thanks

 

You could use unassigned devices for the external drive and then use duplicati for the backup. I have heard that it can be used for this function. It is aimed mainly for cloud backup but I'm sure if you map the external drive in the docker it should work as you want

Thanks for your reply can you explain a little more i have connected it and have mounted it using unassigned devices where do i go form there 

Next you need to install the Duplicati docker (with the proper path to your external drive) and configure your backup within the app.

 

@gridrunner has been kind enough to provide a YouTube video for this.

As @wgstarks said and also the video is very useful too :)