In order for scheduled backups to be successful, the machine must be on when the scheduled backup is due to run. This is not a problem for machines which are always left on, such as servers, though for environmental and practical reasons this is not suitable for all desktop/laptop clients. Some machines will also be set by default to go to sleep, and may therefore miss their backups even if they are left on.
We therefore offer the following advice:
- Windows users need to set their machines to stay on when idle.
Go to Start > Control Panel > Power Options > Change when the computer sleeps tab, and ensure that Put the computer to sleep is set to Never.
If your machine is a laptop whose lid you close when you leave it on for backup then, also under Power Options, check that When I close the lid is set to Do nothing.
- Mac users (OS X 10.7 onwards) should need only to leave their machine on or in sleep mode, with the lid open if a laptop. The machine should then switch on automatically for the backup.