Comment Re:Not just UPS? (Score 1) 71
Lots of stuff on cron starts on *:00
At least cron weekly jobs run at a somewhat arbitrary time. Systemd weekly timers all run at midnight on Monday. That includes RHEL's fstrim timer. That's just great when you have 100s or 1000s of VMs starting a filesystem TRIM at the exact same seconds. Really kills the backend storage.