[AusNOG] Global switch Level 4 Hard disk's
Jake Anderson
yahoo at vapourforge.com
Mon Jan 13 19:05:01 EST 2014
Given that the HDD's do generally "fly"
I wonder if dumping a buttload of argon in there would affect the
aerodynamics enough to bother things, it is monatomic unlike pretty much
everything else in the atmosphere.
Also its rather more thermally insulative than standard air so that
could have an effect.
I have a tank of Co2 and argon, anybody have a significant sample of
disks they want to try? ;->
The report somebody posted earlier didn't look into any "chemistry" effects.
as far as noise and hdd's take a look at
http://www.youtube.com/watch?v=tDacjrSCeq4
Guy shouts into his disk array and has quite noticeable effects.
On 13/01/14 18:40, Matt Perkins wrote:
> Global switches incident report states that the use inergen
> Matt
>
>
>
> --
> /* Matt Perkins
> Direct 1300 137 379 Spectrum Networks Ptd. Ltd.
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> On 13 Jan 2014, at 18:38, Matt Carter <mattc at mansol.net.au
> <mailto:mattc at mansol.net.au>> wrote:
>
>> No more space than you need for a air handling room a ups room or
>> some twin turbo v16 generators ;) if you had a hand in building it
>> from the slab of course ;) eg iseek has always used inergen and as
>> far as I'm aware will continue to do so .
>>
>> Sent from my iPhone
>>
>> On 13 Jan 2014, at 17:36, "Tony de Francesco" <tonyd at pue.com.au
>> <mailto:tonyd at pue.com.au>> wrote:
>>
>>> Given the floor plate sizes at Global Switch you'll probably find
>>> they use FM200.
>>>
>>> Inergen is typically used in smalller DCs because of the volume of
>>> gas that is required (and the resulting flopr space requirements to
>>> house it), not necessarily because of cost.
>>>
>>> Regards
>>>
>>> Tony de Francesco
>>> Technical Director
>>> P.U.E. Pty Ltd
>>> Mob: +61 (0) 457 701 179
>>> Email: tonyd at pue.com.au <mailto:tonyd at pue.com.au>
>>>
>>> On 13/01/2014 6:17 PM, "Joshua D'Alton" <joshua at railgun.com.au
>>> <mailto:joshua at railgun.com.au>> wrote:
>>>
>>> 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 <mailto: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 <mailto: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
>>> <tel:%2B61%20%280%29%20457%20701%20179>
>>> Email: tonyd at pue.com.au <mailto:tonyd at pue.com.au>
>>>
>>> On 13/01/2014 5:45 PM, "Tony de Francesco"
>>> <tonyd at pue.com.au <mailto: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
>>> <tel:%2B61%20%280%29%20457%20701%20179>
>>> Email: tonyd at pue.com.au <mailto:tonyd at pue.com.au>
>>>
>>> On 13/01/2014 5:33 PM, "Ben Buxton"
>>> <bb.ausnog at bb.cactii.net
>>> <mailto: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
>>> <mailto: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
>>> <mailto: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
>>> <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
>>> <mailto: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
>>> <mailto:nathan.brookfield at simtronic.com.au>
>>>
>>> -----Original Message-----
>>> From: AusNOG
>>> [mailto:ausnog-bounces at lists.ausnog.net
>>> <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
>>> <mailto: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
>>> <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
>>> <mailto: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
>>> <http://WWW.FIKE.COM> PROINERT(r) HUSH
>>> NOZZLES
>>> >>
>>> >> -----Original Message-----
>>> >> From: AusNOG
>>> [mailto:ausnog-bounces at lists.ausnog.net
>>> <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
>>> <mailto: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
>>> <mailto:matt at spectrum.com.au>
>>> >> Fax 1300 133 255 Level 6,
>>> 350 George Street Sydney
>>> 2000
>>> >> SIP
>>> 1300137379 at sip.spectrum.com.au
>>> <mailto:1300137379 at sip.spectrum.com.au>
>>> >> PGP/GNUPG Public Key can be found
>>> at http://pgp.mit.edu */
>>> >>
>>> >>
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