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HP ProLiant ML350 G6 shut down unexpectedly issue

my HP ProLiant ML350 G6 shutdown from time to time. Already installed all drivers update from support pack. Also run the diag tool from smart start cd, there error found.
i am wondering if my ups is the issue.... my UPS is APC Back-UPS ES 750
http://www.apc.com/resource/include/techspec_index.cfm?base_sku=be750bb

and my server is this one and the power supply is460  watt
http://h10010.www1.hp.com/wwpc/us/en/sm/WF06b/15351-15351-241434-241646-241477-3884315-3922634-4151434.html

I am not sure if this is causing the issue. How can I know if the ups is good for my server or not??
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okamon
Asked:
okamon
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2 Solutions
 
CuteadderCommented:
What is the temperature like in the room?

how old is the cpu battery?
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Aaron TomoskyTechnology ConsultantCommented:
Check the event log.
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ktl532Commented:
As Cuteadder mentioned, if the processor or motherboard is overheating. It will shutdown automatically to protect your server. If you power on your server without UPS, still having the same issue? Event viewer log shown "shut down unexpectedly", right?
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okamonAuthor Commented:
yes. Event viewer log shown "shut down unexpectedly". Other than that, i cannot see any error. and I already did a full diag using HP tool, everything is normal, as well as temperature. i also called HP, they couldn't find out anything.

And My question is is the UPS and server compatible???
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ktl532Commented:
What OS is running on HP ProLiant ML350 G6?
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ktl532Commented:
An answer from HP. The new Proliant G6 have a PFC type of Power Supply and will not work with "square sine wave". They will work with a "pure sine wave" type of UPS.

Some Smart-UPS from APC have pure sine wave (I think the "SC" models of Smart-UPS have more problems than other Smart-UPS). Forget Back-UPS. However, APC is not yet certified for the G6 (not listed on their web site).
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okamonAuthor Commented:
it's running windows 2008 r2 64 bit. So do you think that will cause the shut down unexpectedly?
I checked the power usage on hp management home page, it currently only use 90 WATT though
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sharjeel ashrafCommented:
try running the server for a day without the UPS conected, if the problem goes away, then it would seem to be the UPS, also most APC UPS's come with software to monitor the UPS, check it and see the logs, they should give you an idea of what is happening.

when does the server shutdown, day time, night time. or randomly

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okamonAuthor Commented:
randomly...
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sharjeel ashrafCommented:
then first, try running the server without the UPS, (this is not recommended), but can be the quickest and sure way of removing the UPS from the problem.

when the shutdown occurs, does the server power back up by itself, or do you need to press he power button to turn it back on.
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andyalderSaggar makers bottom knockerCommented:
They don't work on Back-UPS, throw it away and get a Smart-UPS. Back-UPS "simulated sinewave" output is just about good enough to run a fishtank heater with. Every time you get a slight drop in input voltage the Back-UPS will crash the server whereas the server's PSU could have tolerated the dip in mains input without crashing.
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D_VanteCommented:
I have had two servers at two different clients do this to me in the past year.
One was a cheap UPS that when the voltage to it dropped it would just turn the server off at times
The other was a bad memory stick, that took months to figure out.
If the UPS software has logging, enable it and review the logs after a shutdown
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andyalderSaggar makers bottom knockerCommented:
I just read the rest of the thread, ktl532 said it yesterday, Comment ID:34883675. I apologise for not mentioning that when I blurted out that modern Proliants don't work on Back-UPS.

Perhaps HP will come out with a common slot PSU that's more tolerant of crap UPSs but that costs in PSU efficiency since you have to build a mini-ups into the PSU and no doubt Dell ^H^H^H^H Principled Technologies would use the less efficient / more tolerant PSUs exclusively in their performance tests.

There's a simple test; unplug the UPS from the mains a few times and see if the server crashes.

You can always get a ferro-ressssonant transformer to put in between the server and UPS instead of throwing the UPS away, it's just a big lump of copper wires and iron magnetics.
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okamonAuthor Commented:
>>Every time you get a slight drop in input voltage the Back-UPS will crash the server whereas the server's PSU could have tolerated the dip in mains input without crashing.

what's the difference between input and output voltage? my situation is there was no power outage, so the server was on utility power I believe and then it just shut down itself. is that what you were trying to say? and one thing I don't understand is that even on utility power, the UPS should perform protection for the server... so why?
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andyalderSaggar makers bottom knockerCommented:
You probably did have a minor brownout, you might not even notice the lights flicker but it could be enough to kick the UPS in. When the UPS kicks in it cuts off the utility power to the server and starts supplying its unacceptable feed to the server.

I'm not an expert on Back-UPS so can't draw you the waveform and it doesn't look like APC publish it as searching for simulated sine wave gives nothing from their site. It's probably pretty similar to the example here though - http://www.cyberpowersystems.com/about-us/news/adaptive-sinewave-ups.html
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okamonAuthor Commented:
Good enough andyalder!! Do you think Smrt-UPS smt750 is good enough for my server?
It's for small home office. my HP Proliant ML350 G6 Windows 2008 R2 / X64-based PC Processor: 1 x Intel Xenon CPU E5620 @ 2.4 GHz Memory: 4 GB DDR3 Radi 1 SAS + 2 SATA hard disk Power supply: 460 Watts

How I see this is the PSU has 460 watts and the smt750 UPS offer 500Watts... so I guess it's enough??
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Aaron TomoskyTechnology ConsultantCommented:
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andyalderSaggar makers bottom knockerCommented:
Smart-UPS is fine. Use the APC UPS selector, enter your server model, it'll recommend a Smart-UPS. Most UPS makers have two types, the cheaper square wave ones and the more expensive pure(ish) sine wave ones.
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