RP7410 strange Event Monitoring Service Event Notification

[Livia]

Hi,

I began to receiver the "Event Monitoring Service Event Notification" alert mail EVERYDAY this week. (everyday at 16:49, just like an alarm clock....)
It is a "AC power not present on line 3 in compute cabinet 0" error. But the "Attention" light is off, no chassis error log, and the server works well.

I have no idea whether there is something wrong on AC power (as the alert mail says) or there is something wrong on the dm_core_hw monitor.

The mail content shows below:
>------------ Event Monitoring Service Event Notification ------------<

Notification Time: Fri Nov 9 16:49:11 2007

sent Event Monitor notification information:

/system/events/core_hw/core_hw is >= 3.
Its current value is SERIOUS(4).



Event data from monitor:

Event Time..........: Fri Nov 9 16:49:11 2007
Severity............: SERIOUS
Monitor.............: dm_core_hw
Event #.............: 62
System..............:

Summary:
AC power not present on line 3 in compute cabinet 0


Description of Error:

AC power is not present on the specified line. The system is configured
to expect AC power on this line.

Probable Cause / Recommended Action:

The power has been disconnected.
Reconnect the power cord.

A power failure has occurred on the power grid.
Investigate and fix the power failure, or wait for the failure to be
corrected.

Additional Event Data:
System IP Address...: 116.7.79.0
System IP Address...: 116.7.79.0
Event Id............: 0x47341f0700000000
Monitor Version.....: B.01.00
Event Class.........: System
Client Configuration File...........:
/var/stm/config/tools/monitor/default_dm_core_hw.clcfg
Client Configuration File Version...: A.01.00
Qualification criteria met.
Number of events..: 1
Associated OS error log entry id(s):
None
Additional System Data:
System Model Number.............: 9000/800/rp7410
OS Version......................: B.11.11
STM Version.....................: A.42.00
EMS Version.....................: A.04.00
Latest information on this event:
http://docs.hp.com/hpux/content/hardware/ems/dm_core_hw.htm#62

v-v-v-v-v-v-v-v-v-v-v-v-v D E T A I L S v-v-v-v-v-v-v-v-v-v-v-v-v
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Could anyone kindly tell me how resolve this problem?

[Murat SULUHAN]

Hi Livia

Maybe you have got STM/EMS bug, why don't you upgrade the latest version from following url

http://h20392.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6191AAE

Best Regards
Murat

[Bill Hassell · Accepted solution]

> It is a "AC power not present on line 3 in compute cabinet 0" error. But the "Attention" light is off, no chassis error log, and the server works well.

Line cord 3 is not seated well in the cabinet or there is a problem in the power distribution unit (PDU). The 7410 can run on just 2 out of the 4 power cables, and momentarily on just one cable unless the server is fully loaded with RAM, CPU's and I/O cards. To see the server's view of power, go to the MP port from the console or MP LAN connection. Login to the MP port and type CM and then PS. Then select the cabinet with T and press Enter a couple of times to get the complete picture. You will see the 4 power cords listed as well as very useful information about all the power supplies and redundancy.

The large power cords are particularly vulnerable at the back of the system if they are not tie-wrapped. Use the PS command to see the electrical state of the cords.

[Torsten.]

check the "PS" status as written earlier.

But your STM version is september 2003 (!!), upgrade and check and observe again:

http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6191AAE

[Livia]

Thanks for your suggests. :)

I've tried upgrading STM/EMS and entered console mode to see CM->PS.
It shows "AC Line A0 NOT PRESENT".
I tried to change the AC power cord but A0 still NOT PRESENT.
Maybe it's because power A0 fails? (but the alert light on server is still OFF....)

Lilia

[Bill Hassell]

> It shows "AC Line A0 NOT PRESENT".
> I tried to change the AC power cord but A0 still NOT PRESENT.
> Maybe it's because power A0 fails? (but the alert light on server is still OFF....)

Sounds like it is time to use a voltmeter. Make sure that if your rp7400 uses a PDU (power distribution unit) that all the breakers are on. If true, verify that voltage is present where you plug in the power cord. 3 out of 4 cords is enough capacity for high availability (the PS command will show available versus required). Your electrician can verify power from the wall to the end of the power cord.

If the cord is indeed powered, then you'll need to schedule a service call with HP to fix the internal wiring.