[AusNOG] Global switch Level 4 Hard disk's
Joshua D'Alton
joshua at railgun.com.au
Mon Jan 13 18:17:41 EST 2014
Suffice to say it still isn't recommended to actually sustain breathing in
such an environment, but the couple minutes it could take you to vacate a
DC (or affected area) you'll do fine breathing that. Possibly not so much
those with asthma or lung issues, but you shouldn't pass out or the like.
On Mon, Jan 13, 2014 at 5:57 PM, Ben Buxton <bb.ausnog at bb.cactii.net> wrote:
>
> The volume discharged is calculated such that residual O2 remains (about
> 10% v/v). The CO2 is intended to induce a physiological reaction which
> causes you to breath heavier to compensate.
>
> There's probably a page describing the reasoning behind the numbers
> (wikipedia maybe?)
>
> BB
>
>
> On Mon, Jan 13, 2014 at 5:53 PM, Tony de Francesco <tonyd at pue.com.au>wrote:
>
>> And last time I drew a breathe I could not live on a mixture of 52%
>> nitrogen, 40% argon and 8% carbon dioxide.
>>
>> Regards
>>
>> Tony de Francesco
>> Technical Director
>> P.U.E. Pty Ltd
>> Mob: +61 (0) 457 701 179
>> Email: tonyd at pue.com.au
>> On 13/01/2014 5:45 PM, "Tony de Francesco" <tonyd at pue.com.au> wrote:
>>
>>> Yes but Inergen is not used in large DCs because of the volume required.
>>>
>>> The European system is a hypoxic system at low pressure. Very different
>>> to dumping a whole bunch of gas through high pressure nozzles.
>>>
>>> Regards
>>>
>>> Tony de Francesco
>>> Technical Director
>>> P.U.E. Pty Ltd
>>> Mob: +61 (0) 457 701 179
>>> Email: tonyd at pue.com.au
>>> On 13/01/2014 5:33 PM, "Ben Buxton" <bb.ausnog at bb.cactii.net> wrote:
>>>
>>>>
>>>> Inergen is an inert system. It's just Nitrogen, Argon and CO2,
>>>> perfectly safe for humans to breath the resulting atmosphere
>>>> post-discharge, as it still contains enough oxygen to support life but not
>>>> fire.
>>>>
>>>> BB
>>>>
>>>>
>>>> On Mon, Jan 13, 2014 at 5:22 PM, Tony de Francesco <tonyd at pue.com.au>wrote:
>>>>
>>>>> Not all data centres use fire supression gases like FM200 or Inergen,
>>>>> although the Australian DC market seems hooked on these gas solutions.
>>>>>
>>>>> Such systems are actually banned throughout much of Europe where
>>>>> instead they deploy an oxygen reduction system, which operates by filling
>>>>> the room with an inert gas to reduce the oxygen levels in order to stop a
>>>>> fire but still support human life (with no effect on electrical equipment!).
>>>>>
>>>>> Regards
>>>>>
>>>>> Tony de Francesco
>>>>> Technical Director
>>>>> P.U.E. Pty Ltd
>>>>> On 13/01/2014 4:22 PM, "Jared Hirst" <
>>>>> jared.hirst at serversaustralia.com.au> wrote:
>>>>>
>>>>>> Must be a very good reason, they have 100+ DC's all the same :(
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: Nathan Brookfield [mailto:Nathan.Brookfield at simtronic.com.au]
>>>>>> Sent: Monday, January 13, 2014 4:21 PM
>>>>>> To: Jared Hirst; Joseph Goldman; ausnog at lists.ausnog.net
>>>>>> Subject: RE: [AusNOG] Global switch Level 4 Hard disk's
>>>>>>
>>>>>> Yeah so it just means when/if a fire starts your equipment is
>>>>>> completely
>>>>>> SCREWED instead of just some blown drives. I wouldn't say this is an
>>>>>> advantage at all.
>>>>>>
>>>>>> Kindest Regards,
>>>>>> Nathan Brookfield (VK2NAB)
>>>>>>
>>>>>> Chief Executive Officer
>>>>>> Simtronic Technologies Pty Ltd
>>>>>>
>>>>>> Local: (02) 4749 4949 | Fax: (02) 4749 4950 | Direct: (02) 4749 4951
>>>>>> Web: http://www.simtronic.com.au | E-mail:
>>>>>> nathan.brookfield at simtronic.com.au
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of
>>>>>> Jared
>>>>>> Hirst
>>>>>> Sent: Monday, 13 January 2014 4:17 PM
>>>>>> To: Joseph Goldman; ausnog at lists.ausnog.net
>>>>>> Subject: Re: [AusNOG] Global switch Level 4 Hard disk's
>>>>>>
>>>>>> " but the generality of the fault means it could happen in any major
>>>>>> data
>>>>>> center really."
>>>>>>
>>>>>> Wouldn't happen in Equinix... They use Dry Pipe and manual fire
>>>>>> supression
>>>>>> to alleviate any 'accidental' systems going off :)
>>>>>>
>>>>>> I would class that as a pretty major Data Centre.
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of
>>>>>> Joseph
>>>>>> Goldman
>>>>>> Sent: Monday, January 13, 2014 4:15 PM
>>>>>> To: ausnog at lists.ausnog.net
>>>>>> Subject: Re: [AusNOG] Global switch Level 4 Hard disk's
>>>>>>
>>>>>> It's not quite so funny when you realise some people may have hours -
>>>>>> or
>>>>>> days - worth of headache's ahead of them restoring back to production.
>>>>>>
>>>>>> It is an odd circumstance, and one that I would not have thought of
>>>>>> personally in risk mitigation (beyond accounting for fire anyway). Are
>>>>>> there drives rated against this kind of 'shock'? Obviously one should
>>>>>> have
>>>>>> Disaster Recovery in place, as the gas suppression going off may
>>>>>> indicate
>>>>>> your servers being doused in fire and unusable anyway, but when one
>>>>>> can
>>>>>> avoid DR one would, and I'd rather not break on a false positive.
>>>>>>
>>>>>> Luckily I don't use Global Switch, but the generality of the fault
>>>>>> means
>>>>>> it could happen in any major data center really.
>>>>>>
>>>>>> On 13/01/14 16:08, Tim March wrote:
>>>>>> > Lol. Awesome.
>>>>>> >
>>>>>> > So, does the incident report look something like;
>>>>>> >
>>>>>> > 12:01 "CCTV records HVAC maintenance punter smoking cigarette"
>>>>>> > 12:03 "Suppression system dumps 987165128973465891723412352643345^2
>>>>>> > liters of gas in to machine room in ~ 0.000000001675 seconds"
>>>>>> > 12:03 "Sonic boom recorded at BOM monitoring station 50km from
>>>>>> facility"
>>>>>> > 12:04 *picture of engineer crying / HDD parts strewn all over floor*
>>>>>> >
>>>>>> >
>>>>>> >
>>>>>> >
>>>>>> > T.
>>>>>> >
>>>>>> > On 13/01/14 3:22 PM, Pinkerton, Eric (AU Sydney) wrote:
>>>>>> >> It's not unheard of, it's to do with the noise created when the
>>>>>> fire
>>>>>> suppression system deploys...
>>>>>> >>
>>>>>> >> http://www.bvfa.de/pdf-download/en-3/
>>>>>> >>
>>>>>> >>
>>>>>> http://www.buildingtechnologies.siemens.com/bt/global/en/firesafety/e
>>>>>> >>
>>>>>> xtinguishing/about-sinorix/latest-technical-findings/Documents/White_
>>>>>> >>
>>>>>> Paper_Potential%20damage%20to%20hard%20disk%20drives%20during%20disch
>>>>>> >> arges_en_September2012.pdf
>>>>>> >>
>>>>>> >> There is even a market for nozzles on fire suppression systems that
>>>>>> lowers the sound in order to prevent this happening..
>>>>>> >>
>>>>>> >> See the WWW.FIKE.COM PROINERT(r) HUSH NOZZLES
>>>>>> >>
>>>>>> >> -----Original Message-----
>>>>>> >> From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of
>>>>>> >> Matt Perkins
>>>>>> >> Sent: Monday, 13 January 2014 2:26 PM
>>>>>> >> To: ausnog at lists.ausnog.net
>>>>>> >> Subject: [AusNOG] Global switch Level 4 Hard disk's
>>>>>> >>
>>>>>> >> Hi All,
>>>>>> >> I have quite a few people today with hard drives fail in suites
>>>>>> on
>>>>>> level 4 at global switch. GS tell us the Gas was dropped in response
>>>>>> to
>>>>>> some smoke from some plant. Not sure how inergen would effect hard
>>>>>> drives
>>>>>> but there are many people wondering around on level 4 looking like
>>>>>> there
>>>>>> dog just died.
>>>>>> >>
>>>>>> >> Anybody have any more info.
>>>>>> >>
>>>>>> >> Matt
>>>>>> >>
>>>>>> >> --
>>>>>> >> /* Matt Perkins
>>>>>> >> Direct 1300 137 379 Spectrum Networks Ptd. Ltd.
>>>>>> >> Office 1300 133 299 matt at spectrum.com.au
>>>>>> >> Fax 1300 133 255 Level 6, 350 George Street Sydney
>>>>>> 2000
>>>>>> >> SIP 1300137379 at sip.spectrum.com.au
>>>>>> >> PGP/GNUPG Public Key can be found at http://pgp.mit.edu*/
>>>>>> >>
>>>>>> >> _______________________________________________
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>>>>>>
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>>>>>
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>>>>
>
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