Hey Neil – Thanks for the Very thorough response. I usually leave core video footage on an external drive and keep the PP files and things like additional photos, music, effect passes, round trips on a desktop folder as (mac) the cloud would back that up. I’d have 2 copies of the source footage files on 2 separate external drives. But it would be simpler to just have a system that keeps both drives the same on an hourly basis – everything in one place – thank you again and I will investigate the two options