[154362] in North American Network Operators' Group

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Re: FYI Netflix is down

daemon@ATHENA.MIT.EDU (George Herbert)
Tue Jul 3 02:07:54 2012

In-Reply-To: <B527AA91-1762-4364-96BB-08F66E7F98CB@gmail.com>
From: George Herbert <george.herbert@gmail.com>
Date: Mon, 2 Jul 2012 23:06:33 -0700
To: Rodrick Brown <rodrick.brown@gmail.com>
Cc: Nanog <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org





On Jul 2, 2012, at 7:19 PM, Rodrick Brown <rodrick.brown@gmail.com> wrote:

> People are acting as if Netflix is part of some critical service they stre=
am movies for Christ sake.  Some acceptable level of loss is fine for 99.99%=
 of Netflix's user base just like cable, electricity and running water I suf=
fer a few hours of losses each year from those services it suck yes, is it t=
he end of the world no..

Actually calculating - understanding - cost of downtime, and what variations=
 on that exist over time, are keys to reliability engineering.

But if you plan to cover X failure scenarios and only cover X/2 failure scen=
arios due to implementation glitches you goofed.

The right answer may be "relax and accept the downtime" and it may be "spend=
 $10 million dollars to avoid most of these".  If you haven't thought it thr=
ough and quantified, do so...



George William Herbert
Sent from my iPhone=


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