Flaky execution of scheduled backups? No Sat. AM in "Daily"?

[DrDan in MA]

I was up at 0325 this AM after both CPUs had been asleep for about 4 hours. I touched neither of 'em.

Mini: awoke normally from sleep at 0329 and ran SD! at 0330 without incident.

Al-PbG4: it never awoke from sleep, and so it never got a chance to run SD! or the other sleep-extenders etc. I woke it up and ran SD! myself later; when I awoke from my own sleep at 0700, I saw the successful 3-green-band window.

I would've liked to know where the log (if any) for that hand-started session is -- though I remember the trick on disclosing the hidden "Logs" subdir, nothing of interest was there... it seems to me that if that run had aborted, there would be a log that would exist somehow... is it anywhere?

I wonder whether there's a fix for "Sleeping Beauty syndrome" (when a Mac's scheduled to awake but doesn't)... and where I would find such a fix...