[AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety

[Robert Hudson]

Not sure. Some of the wordage indicates it may be a separate incident
(albeit at a similar time)...

On Fri, 14 Dec. 2018, 7:50 am Simon Sharwood <simon at jargonmaster.com wrote:

>
> https://www.theregister.co.uk/AMP/2014/02/04/loud_data_centre_gas_release_sounds_harm_disks/
> was it this one Robert?
> ------------------------------
> *From:* AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of Robert
> Hudson <hudrob at gmail.com>
> *Sent:* Friday, December 14, 2018 7:45:06 AM
> *To:* Bevan Slattery
> *Cc:* AusNOG at lists.ausnog.net
> *Subject:* Re: [AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety
>
> I can confirm that the sound/pressure wave from a gas discharge can, does
> and absolutely did destroy a lot of spinning disks in some very expensive
> kit (big data and database appliances) when such a system was accidently
> deployed in a datacentre I am familiar with.
>
> On Fri, 14 Dec. 2018, 5:02 am Bevan Slattery <bevan at slattery.net.au wrote:
>
>> It’s pretty much all been said.
>>
>> Halon (long gone).  Reaction sucks oxygen out of air.
>> FM200 (safe but being phased out).  Heard it can leave a residue despite
>> the brochure saying not.
>> Inergen  more common (and others like it).  Fundamentally mostly nitrogen
>> that drops oxygen below 15% and drops temperature.  These are two
>> components of a fire (heat, fuel and oxygen).  People can operate
>> comfortably below 15% oxygen.  In fact at 10% you can still function more
>> than enough to pick up your gear and leave the room.
>>
>> I did quite a bit of research on reduced oxygen environments (hypoxic)
>> which is used on (Firepass etc.)
>> http://www.firepass.com/oxygen-reduction-fire
>>
>> Obviously dry pipe is used a lot. The issues with gas suppression today
>> are more around noise (and vibration) and temp drop and they relate to
>> spinning disks and circuit boards, more than people.
>>
>> The issues around dry pipe is, well when it goes off, it’s not very dry
>> and water/equipment certainly doesn’t mix.
>>
>> Cheers
>>
>> B
>>
>> ------------------------------
>> *From:* AusNOG <ausnog-bounces at lists.ausnog.net> on behalf of Paul
>> Wilkins <paulwilkins369 at gmail.com>
>> *Sent:* Wednesday, December 12, 2018 3:53 pm
>> *To:* AusNOG at lists.ausnog.net
>> *Subject:* [AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety
>>
>> Every data centre has a fire suppression system. We're not used to
>> thinking of this as a hazardous environment, but consequent totwo techs
>> being found dead working on a fire suppression system in Antarctica
>> <https://www.theguardian.com/world/2018/dec/12/antarctica-two-technicians-dead-mcmurdo-station-ross-island>,
>> I find myself wondering yet again, why there aren't more stringent controls
>> around the fire suppression systems in data centres: viz - when you enter a
>> data centre, how confident can you be you're not going to be quietly
>> asphyxiated?
>>
>> Kind regards
>>
>> Paul Wilkins
>>
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