Dell Fan Speeds / Power management (OS CONTROL) Crapy data center.

2012-02-17 Thread keith
In Dell PowerEdge R310's and proably other poweredge servers there's a 
setting in the bios for power saving that I've set to OS Control.


On Monday a pdu that powers a number of our R310's and some other kit 
burnt out at the big plug that plugs into the pdu. The Pdu was replaced 
by the data center staff and when I wen to the data center to plug our 
servers back in again an operator was saying that it's the fan's in 
the servers that consume all the power. That's made me think that maby 
the temperature in the datacenter might have gone through the roof on 
the Monday afternoon and have caused all the R310's fans to kick in on 
full power and possible break the pdu?


So my question is really, what should I set the power saving setting to 
on the Dell server that are running OBSD. (all 4.9 or 5.0 + amd64)


The link below is for the R310 and is all about the bios / power saving 
states.


http://www.google.co.uk/url?sa=trct=jq=R310+os+controlsource=webcd=2ved=0CCoQFjABurl=http%3A%2F%2Fwww.dell.com%2Fdownloads%2Fglobal%2Fproducts%2Fpedge%2Fen%2Fpoweredge_r310_techguide_final1.pdfei=7VA-T4myMY7B8gOi67WiCAusg=AFQjCNHE9kqeypH1u6XRcT94GhXS07VPJAcad=rja


I've now got a APC Netbots with external probes monitoring / graphing  
Emailing so if this happens again I've at least got some environmental 
data to help work out why this is happening.


Cheers
Keith



Re: Dell Fan Speeds / Power management (OS CONTROL) Crapy data center.

2012-02-17 Thread Stuart Henderson
On 2012-02-17, keith ke...@scott-land.net wrote:
 In Dell PowerEdge R310's and proably other poweredge servers there's a 
 setting in the bios for power saving that I've set to OS Control.

 On Monday a pdu that powers a number of our R310's and some other kit 
 burnt out at the big plug that plugs into the pdu. The Pdu was replaced 
 by the data center staff and when I wen to the data center to plug our 
 servers back in again an operator was saying that it's the fan's in 
 the servers that consume all the power.

Power consumption of your equipment shouldn't cause this, there should
be a circuit breaker that trips at a current draw below the maximum
load of PDUs etc in order to protect them.

I would be looking for a proper report from the datacentre/electricians
into why this happened. Simply replacing failed power equipment
without an investigation into what went wrong is not acceptable in
this type of environment.

I would be tempted to set everything to max performance and keep a
close eye on it so that any failures will become clear more quickly,
rather than happen randomly later at an inconvenient moment...



Re: Dell Fan Speeds / Power management (OS CONTROL) Crapy data center.

2012-02-17 Thread Henning Brauer
* keith ke...@scott-land.net [2012-02-17 14:33]:
 an operator was saying that it's the fan's in the servers that
 consume all the power.

He's wrong, the power LED takes all the power.

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