[87015] in North American Network Operators' Group
Re: trollage (Re: Akamai server reliability)
daemon@ATHENA.MIT.EDU (Joel Jaeggli)
Mon Nov 28 15:52:03 2005
Date: Mon, 28 Nov 2005 12:51:30 -0800 (PST)
From: Joel Jaeggli <joelja@darkwing.uoregon.edu>
To: Chris Owen <owenc@hubris.net>
Cc: nanog@merit.edu
In-Reply-To: <Pine.LNX.4.58.0511281336390.14488@corp.hubris.net>
Errors-To: owner-nanog@merit.edu
On Mon, 28 Nov 2005, Chris Owen wrote:
> As far as I can tell the only thing that will get a box replaced is if it
> can't be booted/pinged. We've pointed out dead CPU fans before (even on
> the incoming replacement boxes) and they've never seemed to care. If it
> runs it runs. If it doesn't they replace the entire box.
Having built a fair number of machines to live for 5 years or longer in
data-centers I will never visit, there's relatively little that you want
to triage onsite on a rackmount pc. Drives, in hot-plug enclosures and
removable power supply modules are about it... Smart-hands are good for
racking and stacking, swapping disks, recabling the oob, swapping media
and so forth. It's not really a good use of someone else's time to have
them performing experimental surgery on pc's. Much better to simply ship
out another one and ship the old one back in the same box.
Decent modern 1u chassis still have sufficient airflow with a couple fans
failed to remain adequately cool, further there's now enough sensors in a
pc to be able to tell when you getting in trouble, rpm indicator for all
the fans, intake processor and output temperature, thermal sensors in
each of the drives etc. Our success-rate at indetifying machines before
they fail has gotten substantially better over time.
> Given all their redundancy I suppose that is probably the way to go.
> Chris
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Chris Owen ~ Garden City (620) 275-1900 ~ Lottery (noun):
> President ~ Wichita (316) 858-3000 ~ A stupidity tax
> Hubris Communications Inc ~ www.hubris.net ~
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Joel Jaeggli Unix Consulting joelja@darkwing.uoregon.edu
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