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EMS Alert on N4000

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Sagar Sirdesai
Trusted Contributor

EMS Alert on N4000

We have N4000 Server with HP-UX 11.11 OS.
The Server has 2 power supplies installed in it and the slot#1 is empty.
But we keep geting EMS alerts for this non-existent power supply.
Please advise if we can somehow supress this alert.
GSP> ps


PS

Power Monitor Status:
Firmware Revision : 3
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 Not Installed - | Normal
2 Normal Type 0 | Normal
3 - - | Normal
4 - - | Normal
5 - - | Normal
6 - - | Normal
7 - - | Normal

11 REPLIES
Mel Burslan
Honored Contributor

Re: EMS Alert on N4000

I am not an hardware expert or anything close, but EMS' functionality is to find and report any hardware issues that you might have and missing one out of 3 power supplies on an N-class machine means jeopardy and will be reported. N-Class cna function with 2 power supplies but losing one of those means a sudden crash and this condition gets reported. If you are keen about this is not an important situation, you may contact HP hardware support and they *might* tell you a way to suppress these alerts but I am not sure if this is at all possible
________________________________
UNIX because I majored in cryptology...
Torsten.
Acclaimed Contributor

Re: EMS Alert on N4000

Install in slots 0 and 1 and you won't get more messages.

Hope this helps!
Regards
Torsten.

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those who understand binary, and those who don't.

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Sagar Sirdesai
Trusted Contributor

Re: EMS Alert on N4000

Many thanks Mel and Torsten.
If I decide to move the Power supply from Slot 2 to Slot 1 will this need a downtime of the server. Will the server sustain power with one Power Supply till the second power supply is swapped.

Sagar
Andrew Rutter
Honored Contributor
Solution

Re: EMS Alert on N4000

hi,

no you need downtime as you have have no redundancy power, with only two installed. if one fails the system will go down quickly!

I would personally just install a third, as they are reasonably cheap nowadays as the system is so old.

If you do decide to swap it over bear attention to switch on the front of the power supply before you remove it. Its a small toggle swicth which should have it position swicthed first to be correct for removal then when re-inserted in the othwer slot switch it back to the origianl position

Andy
Torsten.
Acclaimed Contributor

Re: EMS Alert on N4000

Power was always a mystery to me in L- and N-class servers.

Normally you connect one half to a power source, the other half to another source, but how to do this with 3 PSU??? I doubt about this solution since more than 10 years...

However, similar to the L-class the server needs 2 or 3 PSU, depending on the configuration. If only half loaded, 2 PSUs are already N+1.

But since the load order is 0,1,2 I assume you get an error if there is a gap (such as in your configuration).

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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If you feel this was helpful please click the KUDOS! thumb below!   
Sagar Sirdesai
Trusted Contributor

Re: EMS Alert on N4000

Now we have got thepower inserted in Slot 1 too.
But Still I'm getting the EMS alert.
I've attached EMS Alert.

Please advise

Sagar
Torsten.
Acclaimed Contributor

Re: EMS Alert on N4000

This means the external SC10 disk enclosure has no power on one of the power supplies!

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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Torsten.
Acclaimed Contributor

Re: EMS Alert on N4000

And by the way, your diagnostics version is from June 2003 - time to upgrade!


The BCC firmware of the SC10 looks old, consider to update this too!

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
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Sagar Sirdesai
Trusted Contributor

Re: EMS Alert on N4000

Hi,
the Data Centre have confirmed that the power supplies of the External Disk Storage have power plug in to them.

I too see that all is fine using the cstm command.

I've attached the cstm output.

Not sure still why I get this EMS alert

Please asvise

Sagar
Torsten.
Acclaimed Contributor

Re: EMS Alert on N4000

update!

Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

__________________________________________________
No support by private messages. Please ask the forum!

If you feel this was helpful please click the KUDOS! thumb below!   
Duncan Edmonstone
Honored Contributor

Re: EMS Alert on N4000

Well if you read the alert you can get this message if the power is of "poor quality" (i.e. not consistent).

So are you still getting it now, or just have old entries in your log? Can your facilities folks do anything to check the quality of power on the power board that disk tray is getting power from?

HTH

Duncan

HTH

Duncan