I did a search for this but did not find what I was looking for. Does anyone know if it is possible to set up a NAS via my time capsule which then creates a back up of my backup? I have 2 macs 1 time capsule 1 WD WorldBook NAS MBA - I just need one back up of MBP - I would like the time machine backup, but then in case of disk failure etc, the secondary backup would be ideal. Does anyone know if this can be done? I realise that I could go out and spend money on a RAID setup, but I am trying to achieve this using the technology I already own...... There is, after all, a recession in all but name on right now. If it is not possible to do this, would it cause trouble have the NAS, which has its own time machine settings etc, create a back up separately? Or is there some software that would accomplish this, I guess really it is more about the files and folders than software which can be easily re-installed.