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<div class="moz-cite-prefix">Given that the HDD's do generally "fly"<br>
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.<br>
Also its rather more thermally insulative than standard air so
that could have an effect.<br>
<br>
I have a tank of Co2 and argon, anybody have a significant sample
of disks they want to try? ;-><br>
<br>
The report somebody posted earlier didn't look into any
"chemistry" effects.<br>
as far as noise and hdd's take a look at
<a class="moz-txt-link-freetext" href="http://www.youtube.com/watch?v=tDacjrSCeq4">http://www.youtube.com/watch?v=tDacjrSCeq4</a><br>
Guy shouts into his disk array and has quite noticeable effects.<br>
<br>
On 13/01/14 18:40, Matt Perkins wrote:<br>
</div>
<blockquote
cite="mid:A303C3CA-6372-41CD-971C-6E8520112C10@spectrum.com.au"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<div>Global switches incident report states that the use inergen </div>
<div>Matt</div>
<div><br>
</div>
<div><br>
<div><br>
</div>
<div>-- </div>
<div>/* Matt Perkins</div>
<div> Direct 1300 137 379 Spectrum Networks Ptd. Ltd.</div>
<div> Office 1300 133 299 <a moz-do-not-send="true"
href="mailto:matt@spectrum.com.au">matt@spectrum.com.au</a></div>
<div> Fax 1300 133 255 Level 6, 350 George Street
Sydney 2000</div>
<div> SIP <a moz-do-not-send="true"
href="mailto:1300137379@sip.spectrum.com.au">1300137379@sip.spectrum.com.au</a></div>
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<div>*/</div>
</div>
<div><br>
On 13 Jan 2014, at 18:38, Matt Carter <<a
moz-do-not-send="true" href="mailto:mattc@mansol.net.au">mattc@mansol.net.au</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
<div>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 . </div>
<div><br>
Sent from my iPhone</div>
<div><br>
On 13 Jan 2014, at 17:36, "Tony de Francesco" <<a
moz-do-not-send="true" href="mailto:tonyd@pue.com.au">tonyd@pue.com.au</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<p dir="ltr">Given the floor plate sizes at Global Switch
you'll probably find they use FM200.</p>
<p dir="ltr">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.</p>
<p dir="ltr">Regards</p>
<p dir="ltr">Tony de Francesco<br>
Technical Director<br>
P.U.E. Pty Ltd<br>
Mob: +61 (0) 457 701 179<br>
Email: <a moz-do-not-send="true"
href="mailto:tonyd@pue.com.au">tonyd@pue.com.au</a></p>
<div class="gmail_quote">On 13/01/2014 6:17 PM, "Joshua
D'Alton" <<a moz-do-not-send="true"
href="mailto:joshua@railgun.com.au">joshua@railgun.com.au</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">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.</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Mon, Jan 13, 2014 at
5:57 PM, Ben Buxton <span dir="ltr">
<<a moz-do-not-send="true"
href="mailto:bb.ausnog@bb.cactii.net"
target="_blank">bb.ausnog@bb.cactii.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr"><br>
<div>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.</div>
<div><br>
</div>
<div>There's probably a page describing the
reasoning behind the numbers (wikipedia
maybe?)</div>
<span><font color="#888888">
<div><br>
</div>
<div>BB</div>
</font></span></div>
<div>
<div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Mon, Jan 13,
2014 at 5:53 PM, Tony de Francesco <span
dir="ltr">
<<a moz-do-not-send="true"
href="mailto:tonyd@pue.com.au"
target="_blank">tonyd@pue.com.au</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<p dir="ltr">And last time I drew a
breathe I could not live on a
mixture of 52% nitrogen, 40% argon
and 8% carbon dioxide.</p>
<div>
<p dir="ltr">Regards</p>
<p dir="ltr">Tony de Francesco<br>
Technical Director<br>
P.U.E. Pty Ltd<br>
Mob: <a moz-do-not-send="true"
href="tel:%2B61%20%280%29%20457%20701%20179"
value="+61457701179"
target="_blank">
+61 (0) 457 701 179</a><br>
Email: <a moz-do-not-send="true"
href="mailto:tonyd@pue.com.au"
target="_blank">tonyd@pue.com.au</a></p>
</div>
<div>
<div>
<div class="gmail_quote">On
13/01/2014 5:45 PM, "Tony de
Francesco" <<a
moz-do-not-send="true"
href="mailto:tonyd@pue.com.au"
target="_blank">tonyd@pue.com.au</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<p dir="ltr">Yes but Inergen
is not used in large DCs
because of the volume
required.</p>
<p dir="ltr">The European
system is a hypoxic system
at low pressure. Very
different to dumping a whole
bunch of gas through high
pressure nozzles.<br>
</p>
<p dir="ltr">Regards</p>
<p dir="ltr">Tony de Francesco<br>
Technical Director<br>
P.U.E. Pty Ltd<br>
Mob: <a
moz-do-not-send="true"
href="tel:%2B61%20%280%29%20457%20701%20179"
value="+61457701179"
target="_blank">
+61 (0) 457 701 179</a><br>
Email: <a
moz-do-not-send="true"
href="mailto:tonyd@pue.com.au"
target="_blank">tonyd@pue.com.au</a></p>
<div class="gmail_quote">On
13/01/2014 5:33 PM, "Ben
Buxton" <<a
moz-do-not-send="true"
href="mailto:bb.ausnog@bb.cactii.net"
target="_blank">bb.ausnog@bb.cactii.net</a>>
wrote:<br type="attribution">
<blockquote
class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr"><br>
<div>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.</div>
<div><br>
</div>
<div>BB</div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On
Mon, Jan 13, 2014 at
5:22 PM, Tony de
Francesco <span
dir="ltr">
<<a
moz-do-not-send="true"
href="mailto:tonyd@pue.com.au" target="_blank">tonyd@pue.com.au</a>></span>
wrote:<br>
<blockquote
class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px
#ccc
solid;padding-left:1ex">
<p dir="ltr">Not all
data centres use
fire supression
gases like FM200
or Inergen,
although the
Australian DC
market seems
hooked on these
gas solutions.</p>
<p dir="ltr">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!).</p>
<p dir="ltr">Regards</p>
<span><font
color="#888888">
<p dir="ltr">Tony
de Francesco<br>
Technical
Director<br>
P.U.E. Pty Ltd</p>
</font></span>
<div>
<div>
<div
class="gmail_quote">On
13/01/2014
4:22 PM,
"Jared Hirst"
<<a
moz-do-not-send="true"
href="mailto:jared.hirst@serversaustralia.com.au" target="_blank">jared.hirst@serversaustralia.com.au</a>>
wrote:<br
type="attribution">
<blockquote
class="gmail_quote"
style="margin:0
0 0
.8ex;border-left:1px
#ccc
solid;padding-left:1ex">
Must be a very
good reason,
they have 100+
DC's all the
same :(<br>
<br>
-----Original
Message-----<br>
From: Nathan
Brookfield
[mailto:<a
moz-do-not-send="true"
href="mailto:Nathan.Brookfield@simtronic.com.au" target="_blank">Nathan.Brookfield@simtronic.com.au</a>]<br>
Sent: Monday,
January 13,
2014 4:21 PM<br>
To: Jared
Hirst; Joseph
Goldman; <a
moz-do-not-send="true"
href="mailto:ausnog@lists.ausnog.net" target="_blank">
ausnog@lists.ausnog.net</a><br>
Subject: RE:
[AusNOG]
Global switch
Level 4 Hard
disk's<br>
<br>
Yeah so it
just means
when/if a fire
starts your
equipment is
completely<br>
SCREWED
instead of
just some
blown drives.
I wouldn't
say this is an<br>
advantage at
all.<br>
<br>
Kindest
Regards,<br>
Nathan
Brookfield
(VK2NAB)<br>
<br>
Chief
Executive
Officer<br>
Simtronic
Technologies
Pty Ltd<br>
<br>
Local: (02)
4749 4949 |
Fax: (02) 4749
4950 | Direct:
(02) 4749 4951<br>
Web: <a
moz-do-not-send="true"
href="http://www.simtronic.com.au" target="_blank">http://www.simtronic.com.au</a>
| E-mail:<br>
<a
moz-do-not-send="true"
href="mailto:nathan.brookfield@simtronic.com.au" target="_blank">nathan.brookfield@simtronic.com.au</a><br>
<br>
-----Original
Message-----<br>
From: AusNOG
[mailto:<a
moz-do-not-send="true"
href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.net</a>]
On Behalf Of
Jared<br>
Hirst<br>
Sent: Monday,
13 January
2014 4:17 PM<br>
To: Joseph
Goldman; <a
moz-do-not-send="true"
href="mailto:ausnog@lists.ausnog.net" target="_blank">ausnog@lists.ausnog.net</a><br>
Subject: Re:
[AusNOG]
Global switch
Level 4 Hard
disk's<br>
<br>
" but the
generality of
the fault
means it could
happen in any
major data<br>
center
really."<br>
<br>
Wouldn't
happen in
Equinix...
They use Dry
Pipe and
manual fire
supression<br>
to alleviate
any
'accidental'
systems going
off :)<br>
<br>
I would class
that as a
pretty major
Data Centre.<br>
<br>
-----Original
Message-----<br>
From: AusNOG
[mailto:<a
moz-do-not-send="true"
href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.net</a>]
On Behalf Of
Joseph<br>
Goldman<br>
Sent: Monday,
January 13,
2014 4:15 PM<br>
To: <a
moz-do-not-send="true"
href="mailto:ausnog@lists.ausnog.net" target="_blank">ausnog@lists.ausnog.net</a><br>
Subject: Re:
[AusNOG]
Global switch
Level 4 Hard
disk's<br>
<br>
It's not quite
so funny when
you realise
some people
may have hours
- or<br>
days - worth
of headache's
ahead of them
restoring back
to production.<br>
<br>
It is an odd
circumstance,
and one that I
would not have
thought of<br>
personally in
risk
mitigation
(beyond
accounting for
fire anyway).
Are<br>
there drives
rated against
this kind of
'shock'?
Obviously one
should have<br>
Disaster
Recovery in
place, as the
gas
suppression
going off may
indicate<br>
your servers
being doused
in fire and
unusable
anyway, but
when one can<br>
avoid DR one
would, and I'd
rather not
break on a
false
positive.<br>
<br>
Luckily I
don't use
Global Switch,
but the
generality of
the fault
means<br>
it could
happen in any
major data
center really.<br>
<br>
On 13/01/14
16:08, Tim
March wrote:<br>
> Lol.
Awesome.<br>
><br>
> So, does
the incident
report look
something
like;<br>
><br>
> 12:01
"CCTV records
HVAC
maintenance
punter smoking
cigarette"<br>
> 12:03
"Suppression
system dumps
987165128973465891723412352643345^2<br>
> liters of
gas in to
machine room
in ~
0.000000001675
seconds"<br>
> 12:03
"Sonic boom
recorded at
BOM monitoring
station 50km
from facility"<br>
> 12:04
*picture of
engineer
crying / HDD
parts strewn
all over
floor*<br>
><br>
><br>
><br>
><br>
> T.<br>
><br>
> On
13/01/14 3:22
PM, Pinkerton,
Eric (AU
Sydney) wrote:<br>
>> It's
not unheard
of, it's to do
with the noise
created when
the fire<br>
suppression
system
deploys...<br>
>><br>
>> <a
moz-do-not-send="true"
href="http://www.bvfa.de/pdf-download/en-3/" target="_blank">http://www.bvfa.de/pdf-download/en-3/</a><br>
>><br>
>> <a
moz-do-not-send="true"
href="http://www.buildingtechnologies.siemens.com/bt/global/en/firesafety/e"
target="_blank">
http://www.buildingtechnologies.siemens.com/bt/global/en/firesafety/e</a><br>
>>
xtinguishing/about-sinorix/latest-technical-findings/Documents/White_<br>
>>
Paper_Potential%20damage%20to%20hard%20disk%20drives%20during%20disch<br>
>>
arges_en_September2012.pdf<br>
>><br>
>> There
is even a
market for
nozzles on
fire
suppression
systems that<br>
lowers the
sound in order
to prevent
this
happening..<br>
>><br>
>> See
the <a
moz-do-not-send="true"
href="http://WWW.FIKE.COM" target="_blank">WWW.FIKE.COM</a> PROINERT(r)
HUSH NOZZLES<br>
>><br>
>>
-----Original
Message-----<br>
>> From:
AusNOG
[mailto:<a
moz-do-not-send="true"
href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.net</a>]
On Behalf Of<br>
>> Matt
Perkins<br>
>> Sent:
Monday, 13
January 2014
2:26 PM<br>
>> To: <a
moz-do-not-send="true" href="mailto:ausnog@lists.ausnog.net"
target="_blank">ausnog@lists.ausnog.net</a><br>
>>
Subject:
[AusNOG]
Global switch
Level 4 Hard
disk's<br>
>><br>
>> Hi
All,<br>
>> I
have quite a
few people
today with
hard drives
fail in suites
on<br>
level 4 at
global switch.
GS tell us
the Gas was
dropped in
response to<br>
some smoke
from some
plant. Not
sure how
inergen would
effect hard
drives<br>
but there are
many people
wondering
around on
level 4
looking like
there<br>
dog just died.<br>
>><br>
>>
Anybody have
any more info.<br>
>><br>
>> Matt<br>
>><br>
>> --<br>
>> /*
Matt Perkins<br>
>>
Direct
1300 137 379
Spectrum
Networks Ptd.
Ltd.<br>
>>
Office
1300 133 299
<a
moz-do-not-send="true"
href="mailto:matt@spectrum.com.au" target="_blank">
matt@spectrum.com.au</a><br>
>>
Fax
1300 133 255
Level 6,
350 George
Street Sydney<br>
2000<br>
>>
SIP <a
moz-do-not-send="true"
href="mailto:1300137379@sip.spectrum.com.au" target="_blank">
1300137379@sip.spectrum.com.au</a><br>
>>
PGP/GNUPG
Public Key can
be found at <a
moz-do-not-send="true" href="http://pgp.mit.edu" target="_blank">http://pgp.mit.edu</a>
*/<br>
>><br>
>>
_______________________________________________<br>
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