I'm running Reflect 6.1 for backing up all PC's in my home and I it's working great overall. But I have a problem with at least one of my PC's, a Surface Pro 3. Reflect is supposed to prevent sleep/hibernation during backup, right? This seems not to be working when the backup takes a really long time (several hours). The computer goes to sleep (or I think actually hibernates), which inevitably leads to a failed backup ("Write operation failed"). Is there a way to avoid this problem? I changed "put the computer to sleep" for "plugged in" to "never", but that didn't help.

Can’t speak to whether Reflect is supposed to prevent sleep/hibernation or why it might not be working if it’s supposed to, but there are separate settings for sleep and hibernate under Control Panel > Power Options > Change plan settings > Advanced. That might at least explain why the system is hibernating even though you’ve changed the sleep setting.