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<a href="https://www.theregister.co.uk/AMP/2014/02/04/loud_data_centre_gas_release_sounds_harm_disks/">https://www.theregister.co.uk/AMP/2014/02/04/loud_data_centre_gas_release_sounds_harm_disks/</a> was it this one Robert?</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> AusNOG <ausnog-bounces@lists.ausnog.net> on behalf of Robert Hudson <hudrob@gmail.com><br>
<b>Sent:</b> Friday, December 14, 2018 7:45:06 AM<br>
<b>To:</b> Bevan Slattery<br>
<b>Cc:</b> AusNOG@lists.ausnog.net<br>
<b>Subject:</b> Re: [AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety</font>
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<div dir="auto">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.</div>
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<div dir="ltr">On Fri, 14 Dec. 2018, 5:02 am Bevan Slattery <<a href="mailto:bevan@slattery.net.au">bevan@slattery.net.au</a> wrote:<br>
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<div style="direction:ltr">It’s pretty much all been said.</div>
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<div style="direction:ltr">Halon (long gone). Reaction sucks oxygen out of air.</div>
<div style="direction:ltr">FM200 (safe but being phased out). Heard it can leave a residue despite the brochure saying not.</div>
<div style="direction:ltr">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.</div>
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<div style="direction:ltr">I did quite a bit of research on reduced oxygen environments (hypoxic) which is used on (Firepass etc.)
<a href="http://www.firepass.com/oxygen-reduction-fire" target="_blank" rel="noreferrer">
http://www.firepass.com/oxygen-reduction-fire</a> </div>
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<div style="direction:ltr">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.</div>
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<div style="direction:ltr">The issues around dry pipe is, well when it goes off, it’s not very dry and water/equipment certainly doesn’t mix.</div>
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<div style="direction:ltr">Cheers</div>
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<div style="direction:ltr">B</div>
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<div id="m_-6948049452514261626divRplyFwdMsg" dir="dir="ltr""><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank" rel="noreferrer">ausnog-bounces@lists.ausnog.net</a>>
on behalf of Paul Wilkins <<a href="mailto:paulwilkins369@gmail.com" target="_blank" rel="noreferrer">paulwilkins369@gmail.com</a>><br>
<b>Sent:</b> Wednesday, December 12, 2018 3:53 pm<br>
<b>To:</b> <a href="mailto:AusNOG@lists.ausnog.net" target="_blank" rel="noreferrer">
AusNOG@lists.ausnog.net</a><br>
<b>Subject:</b> [AusNOG] [AUSNog] : Re Data Centre Fire Suppression Safety
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<div dir="ltr">Every data centre has a fire suppression system. We're not used to thinking of this as a hazardous environment, but consequent to<a href="https://www.theguardian.com/world/2018/dec/12/antarctica-two-technicians-dead-mcmurdo-station-ross-island" target="_blank" rel="noreferrer">two
techs being found dead working on a fire suppression system in Antarctica</a>, 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?<br>
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Kind regards<br>
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Paul Wilkins<br>
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