db2042 has had an alert that was triggered 5 days ago about its BBU, so it is confirmed to be permanently broken.
We need to do a failover for m3 codfw
root@db2042:~# hpssacli controller all show status Smart Array P420i in Slot 0 (Embedded) Controller Status: OK Cache Status: Permanently Disabled Battery/Capacitor Status: Failed (Replace Batteries/Capacitors)