It would be perfect but

It would be perfect but I can’t let the computer go to sleep when it is scheduled to backup. My wife and I both have Backup Scheduler for Time Macine on our iMacs. I really like the flexibility of sceduling the backups. We have both of ours sceduled at 2 A.M. when it won’t slow down the other apps that are running.

60s4ever about Backup Scheduler: Time Editor