Anonymous_User Absent Member.
Absent Member.
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Overheated

Once again I've overheated the server room. One hundred and thirteen
degrees. Sadly I'm not sure exactly what I did. Either I walked in an
turned off the AC or I shut it off when I walked out. Either way I
turned it off and the room got heated up. My poor server room has no
ventilation and no system to warn me. Those are two things I'm going to
work on getting.

My worse nightmare is the AC going out with no way of knowing and no way
for the heat to vent.

THIS MUST CHANGE.
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16 Replies
Anonymous_User Absent Member.
Absent Member.

Re: Overheated

On Tue, 2009-06-09 at 19:36 +0000, Matthew wrote:
> Once again I've overheated the server room. One hundred and thirteen
> degrees. Sadly I'm not sure exactly what I did. Either I walked in an
> turned off the AC or I shut it off when I walked out. Either way I
> turned it off and the room got heated up. My poor server room has no
> ventilation and no system to warn me. Those are two things I'm going to
> work on getting.


Ouch. Yep. Netbotz, etc are your friend. If you have higher end UPS,
line conditioners or even HVACs, sometimes there are options for those.

>
> My worse nightmare is the AC going out with no way of knowing and no way
> for the heat to vent.
>
> THIS MUST CHANGE.


We've have dual HVACs, but earlier this year our bldg mgmt created
a high head pressure situation and blew everything up shutting down all
AC (nice).

113F? or 113C?

113F is pretty much ok (in general).

I have it so hot to where we could only go in for several seconds
without risking our lives. Felt like a wall hitting you in the face
just entering the room. Lovely.

We have some emergency spot coolers and large air moving fans that we
keep in the datacenter. We're on the 8th floor... would love it if we
could evac the air out the windows (windows along both halfs of the
datacenter). Otherwise, there's just no great place to suck in good air
and evac bad air when there's a wide scale issue. But we survive when
those things do occur.

Seems like no matter how well you plan... there's always a way for
things to break... and for things to get really, really hot.



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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

Yep. I'm going to try to get some of those wonderful heat monitoring
systems. I wish I had had a big fan. Would have made cooling it down
faster.

113F. I caught it early this time. 😄
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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

On Tue, 09 Jun 2009 19:56:18 +0000, cjcox wrote:

> I have it so hot to where we could only go in for several seconds
> without risking our lives. Felt like a wall hitting you in the face
> just entering the room. Lovely.


I remember an office move which took equipment out of a fairly large
climate-controlled lab (actually, two labs) and moved them into a rather
small lab. HVAC was installed to handle the heat load, and everything
was fine....

....Until the outside temperature came down, when the building's heat came
on. Then the temp climbed to well over 120F very quickly, I'd guess
about 100 PCs (mostly server grade equipment) in the room. The HVAC was
fighting against the building heat, and the HVAC lost.

The duration of time between "moved" and "failed" was about a day and a
half, if that; the internal building temperature switchover from cooling
to heating was triggered by a thermostat connected on the outside of the
building - and was for the entire building except our computer room (next
door to the lab IIRC.

Jim
--
Jim Henderson, CNA6, CDE, CNI, LPIC-1, CLA10, CLP10
Novell Training Services
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zeffan Absent Member.
Absent Member.

Re: Overheated

We're on the 8th floor...


What? Are you kidding me? I thought "ground floor or below" was a requirement for placement of IT personnel. I mean, heaven forbid we should get so see the sunlight!
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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

zeffan wrote:
>> We're on the 8th floor...

>
> What? Are you kidding me? I thought "ground floor or below" was a
> requirement for placement of IT personnel. I mean, heaven forbid we
> should get so see the sunlight!
>
>

It will burn your skin.
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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

Matthew <systemRemovEtyrant@gmail.com> expounded:
> Once again I've overheated the server room. One hundred and thirteen
> degrees. Sadly I'm not sure exactly what I did. Either I walked in an
> turned off the AC or I shut it off when I walked out. Either way I
> turned it off and the room got heated up. My poor server room has no
> ventilation and no system to warn me. Those are two things I'm going to
> work on getting.


> My worse nightmare is the AC going out with no way of knowing and no way
> for the heat to vent.


> THIS MUST CHANGE.


Ayep. As it happens, we're in the process of getting our 2nd HVAC unit
onto the generator. THis necessitates a certain HVAC outage of around 6
hours.

6 hours.

We don't know how hot it'll get in there in 6 hours.

We have some large fans, windows that open, and temperatures that are
probably going to be below 70. And hope. Musn't forget hope.

--
--Borg Consulate--
Cheap backup software, the bane of my existence
------------------------------------------------------------------------
vicofborg's Profile: http://forums.novell.com/member.php?userid=9273
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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

Matthew wrote:

I think I remember setting up a SNMP temperature monitor of several
servers in a server room one time.

It didn't monitor the room but it did monitor 4 or five servers that
had internal thermometers . It would send out an email if any of them
went up five degrees or something similar.

It was accurate enough that I could tell when the door to the room was
left open.

I think I used nágios, but I could be wrong on that.
--
brain
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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

On Tue, 2009-06-09 at 20:16 +0000, zeffan wrote:
> > We're on the 8th floor...

>
> What? Are you kidding me? I thought "ground floor or below" was a
> requirement for placement of IT personnel. I mean, heaven forbid we
> should get so see the sunlight!


Before the dot-bomb, we owned the whole building... very custom.

It's kind of cool. 12 stories with an underground designed to connect
the building to two others if all were built... but times change. We
just occupy a few floors now and we no longer own the facility.

Oh well.


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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

On Tue, 2009-06-09 at 19:59 +0000, Matthew wrote:
> Yep. I'm going to try to get some of those wonderful heat monitoring
> systems. I wish I had had a big fan. Would have made cooling it down
> faster.
>
> 113F. I caught it early this time. 😄


You'll probably be ok. Parts that usually fail are things like
"questionable" disk drives (e.g. not so great IDE/SATA drives). Just an
fyi. The heat up tends to wear on things like that and PSUs.

But 113F, is hardly a good heat up. You did well.


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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

Victor of Borg <vicofborg@myrealbox.com> expounded:
> Ayep. As it happens, we're in the process of getting our 2nd HVAC unit
> onto the generator. THis necessitates a certain HVAC outage of around 6
> hours.


> 6 hours.


> We don't know how hot it'll get in there in 6 hours.


> We have some large fans, windows that open, and temperatures that are
> probably going to be below 70. And hope. Musn't forget hope.


Doing a test now with one HVAC unit on. Creep isn't as bad as we thought.
It rose 5 degrees in 20 minutes, but has been steady at +1 degree per hour
since. We can survive a 6 hour outage.

--
--Borg Consulate--
Cheap backup software, the bane of my existence
------------------------------------------------------------------------
vicofborg's Profile: http://forums.novell.com/member.php?userid=9273
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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

In our rooms if the ambient was 113F, the equipment would be far warmer.

In fact, I just took some measurements for the server room in this
building, ambient is in the low 70's, output from some of the higher
utilized DL380G5's is reaching 100F. Thats nearly a 30 degree rise at
relatively cool temps.

I wouldn't lose sleep over an afternoon of high temps, but yeah, get a
netbotz. They are great, I just hope we never have the occasion to get a
notification from the fluid sensors. 😄




cjcox wrote:
> On Tue, 2009-06-09 at 19:59 +0000, Matthew wrote:
>> Yep. I'm going to try to get some of those wonderful heat monitoring
>> systems. I wish I had had a big fan. Would have made cooling it down
>> faster.
>>
>> 113F. I caught it early this time. 😄

>
> You'll probably be ok. Parts that usually fail are things like
> "questionable" disk drives (e.g. not so great IDE/SATA drives). Just an
> fyi. The heat up tends to wear on things like that and PSUs.
>
> But 113F, is hardly a good heat up. You did well.
>
>

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Anonymous_User Absent Member.
Absent Member.

Re: Overheated

On Tue, 2009-06-16 at 20:33 +0000, unsigned wrote:
> In our rooms if the ambient was 113F, the equipment would be far warmer.
>
> In fact, I just took some measurements for the server room in this
> building, ambient is in the low 70's, output from some of the higher
> utilized DL380G5's is reaching 100F. Thats nearly a 30 degree rise at
> relatively cool temps.
>
> I wouldn't lose sleep over an afternoon of high temps, but yeah, get a
> netbotz. They are great, I just hope we never have the occasion to get a
> notification from the fluid sensors. 😄


Leak frog? http://www.ideativeinc.com/leakfrog.cfm



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adrockk Frequent Contributor.
Frequent Contributor.

Re: Overheated

I've hit 125 in mine once before I could get to it and shut stuff down.
Typically it is around 65 in front of the servers and around 85 behind the
servers, with the thermostat set at 70.

We had trane install a monitoring system that is supposed to page someone (for
HVAC, it would be our maintenance dept). They got the page, and instead of
calling me or visiting the server room, they went to the monitoring system and
disabled alerts from that room. 🙂
--



Matthew spewed:

> Yep. I'm going to try to get some of those wonderful heat monitoring
> systems. I wish I had had a big fan. Would have made cooling it down faster.
>
> 113F. I caught it early this time. 😄


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adrockk Frequent Contributor.
Frequent Contributor.

Re: Overheated

http://images.despair.com/products/demotivators/hope.jpg
--



Victor of Borg spewed:

> And hope. Musn't forget hope.


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