AC POWER FAILURE - running on UPS battery

[ceacuna]

We are encountering these numerous messages in one of our server HP-UX 9000/800 L Class:

Apr 11 10:09:42 mmds1 /usr/lbin/ups_mond[2158]: /usr/lbin/ups_mond: UPS /dev/tty
0p1 AC POWER FAILURE - running on UPS battery
Apr 11 10:09:42 mmds1 /usr/lbin/ups_mond[2158]: If power is not returned within
previously configured time period, your system will automatically go to graceful
shutdown.
Apr 11 10:09:44 mmds1 /usr/lbin/ups_mond[2158]: /usr/lbin/ups_mond: UPS /dev/tty
0p1 OK: AC Power back on
Apr 11 10:09:44 mmds1 /usr/lbin/ups_mond[2158]: /usr/lbin/ups_mond: AC Power to
all recognized, system critical UPS's OK! System will not shutdown.

Questions:
1. Will this alarm cause a system panic or system reboot if not attended to?
2. Is the replacement of the 5.5 kVA UPS the solution here?

Thanks in advance.

Lito

[Sherif A. Louis]

well apparently you have a main power failure and the server is running on UPS battery and it's giving a warning that it will shutdown. it will not panic but it will shutdown.. and if you have a database running that will probably need to be shut before the shutdown... so you should check ur main power connections, not the UPS.

[Sherif A. Louis]

if you have resmon installed on ur HP-UX u can check /var/adm/resmon/logs/event.log it should give u a more detail of hardware and power failures.

[Andrew Rutter]

hi,

your system is ok as long as the UPS is.

it looks like you keep loosing power to the server and the batteries in the ups are keeping it up, however it has been configured to shutdown should you not rectify the power problem.

check the status of the power supply/ies in the gsp.

login to gsp and issue the ps command to display the status of the installed psu's. and how many you have.

you may need to replace one or more if the input supply is good

andy

[ceacuna]

Hi Sherif & Andy,

Thanks a lot for your replies.

Below are the event.log and gsp I gathered.

{\rtf1\ansi\ansicpg1252\deff0\deflang1033{\fonttbl{\f0\fswiss\fcharset0 Arial;}}
{\*\generator Msftedit 5.41.15.1507;}\viewkind4\uc1\pard\f0\fs20 >---------- End Event Monitoring Service Event Notification ----------<\par
\par
>------------ Event Monitoring Service Event Notification ------------<\par
\par
Notification Time: Tue Apr 8 12:09:29 2008\par
\par
mmds1 sent Event Monitor Restart information due to system reboot:\par
\par
Title: FC60_monitor\par
Command: /usr/sbin/stm/uut/bin/tools/monitor/fc60mon\par
Vendor: Hewlett-Packard Co.\par
Version: A.01.04\par
Monitor PID: 2166\par
\par
Resources currently monitored:\par
/storage/events/disk_arrays/FC60/AM60Srvr\par
\par
>---------- End Event Monitoring Service Event Notification ----------<\par
\par
>------------ Event Monitoring Service Event Notification ------------<\par
\par
Notification Time: Tue Apr 8 13:09:36 2008\par
}

GSP Host Name: mmds1
GSP> ps
PS

Power Monitor Status:
Firmware Revision : 5
System Power state: On Power Switch : On
Temperature : Normal Selected fan state: Normal

Power supplies | Fan
# State Type | States

-----------------------------------------------------------
0 Normal Type 0 | Normal
1 Normal Type 0 | Normal
2 Normal Type 0 | Normal
3 - - | Normal
4 - - | Normal
5 - - | Normal
6 - - | Normal
7 - - | Normal
GSP Host Name: mmds1

Thanks.

Lito