I'm currently unwell and could be hospitalized at any time. To save energy, I've set my Windows 11 PC to hibernate after 2 days of inactivity. However, I also have a daily auto backup set up for my Thunderbird emails. I'm worried that this backup process might keep my computer from hibernating by making it seem active. Specifically, I want to know if backup software affects the idle timer or if only user actions like moving the mouse or typing do. Additionally, what happens if my PC tries to hibernate while a backup is in progress?
3 Answers
Don't stress too much about power costs; leaving a gaming PC idle for a month only adds about $3-$9 to your bill. But still, I'd suggest checking if a 2-day setting is really necessary, especially since you're dealing with health issues.
Generally, only human input (like keyboard or mouse actions) affects the Windows idle timer, so your backups shouldn't impact hibernation. If your PC starts hibernating during a backup, Windows will pause the process and pick it up again once the system is back on, so your data should be safe.
Backup software can sometimes prevent hibernation depending on its design. However, since Thunderbird backups are typically quick, they likely won’t interfere much. If your PC does hibernate mid-backup, don’t worry too much—Thunderbird will just stop saving until you wake the system back up, and you'll have another chance to back up the next day. Still, I recommend testing your setup beforehand to be safe.

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