Mac Backup Without Login (automated)

[harvey.l12]

I am looking for a way to backup a mac using time machine without having to login as a user. But i want this automated.

So here is my scenario, We have some Macs and they are never in use on a sunday, so this is when backups would happen. The Macs will be set to boot up at a specific time and boot down as a specific time but we are using a external hard drive as our backup drive which gets shared over the network. At the moment i cant find a away to mount that drive from the .sparsebundle file when the Mac boots up but i can set it to mount when a user logs in.

So the question is, is there any way to mount the drive and start it backing up by writing a script for when the Mac boots up? any help?

Thanks

 

[harvey.l12]

Thank you for the replies, i will mess around with some test accounts to see if i can do anything like your suggestions

 

[harvey.l12]

Is there any way of making an account that will only automatically login on specific dates or it would mean our users would have to consistently logout the auto backup account?