[191485] in North American Network Operators' Group
Re: One more thing to watch out for at data centers - fire drills
daemon@ATHENA.MIT.EDU (Larry Sheldon)
Sat Sep 17 17:43:35 2016
X-Original-To: nanog@nanog.org
To: nanog@nanog.org
From: Larry Sheldon <larrysheldon@cox.net>
Date: Sat, 17 Sep 2016 16:43:18 -0500
In-Reply-To: <kcgh1t0041cZc5601cgi5A>
Errors-To: nanog-bounces@nanog.org
On 9/17/2016 07:39, Suresh Ramasubramanian wrote:
> http://motherboard.vice.com/read/a-loud-sound-just-shut-down-a-banks-data-center-for-10-hours?utm_source=bbcfb
>
> Releasing inert gas from fire suppression units that were over
> pressurized resulted in an extremely loud noise
My experience is only with in-specification systems (and only in tape
libraries) but those tests were pretty loud.
– causing cabinets
> full of hard drives to vibrate – which got transmitted to the read –
> write heads of the drives.
My experiences were back in the days of washing-machine class disc
drives and they were a 4-hour fire-wall away, but I don't remember them
being impacted. (I can't believe that I was allowed to conduct a test
with them running, but I don't remember shutting them down.)
I wonder if orientation mattered--mine were all platters parallel to the
floor, I wonder if the damaged ones were parallel to the wave front.
> full of hard drives to vibrate – which got transmitted to the read –
> write heads of the drives.
>
> Amazing sort of outage + data loss, and this time the physical
> security plant chief gets to write up the RCA.
--
"Everybody is a genius. But if you judge a fish by
its ability to climb a tree, it will live its whole
life believing that it is stupid."
--Albert Einstein
From Larry's Cox account.
