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- How many 9s?
- William Tasso
April 20, 2006, 11:41 pm
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Pulled the plug on about 20 internet facing production servers yesterday
(details are irrelevant) for about 30-40 minutes.
Can count on one hand the number of clients that noticed - and only one of
those called during the outage. The others were casual enquiries after
Re: How many 9s?
Fleeing from the madness of the http://groups.google.com jungle
around 7:00 PM local time - client base covers roughly +/-6 hours in
Ahh don't know, the one that called during the outage is a very active
user with several servers on that network - I imagine he was directly
This was a controlled fire-fighting outage to replace an ailing router -
one thing that really did surprise me when I found out afterwards was that
my client (the network owner) had made no attempt whatsoever to warn any
of his customers that there would be some disruption. Astonishing.
Re: How many 9s?
William Tasso wrote:
We have a new clause in all of our client contracts. 1 hour of maint
time every wednesday evening at 8pm. It says something along the lines
of "it's unlikely your sites will be unaccessible...". Our clients
seem happy with that, and we have a 99.9% uptime promise on top of that
so we have freedom to keep the severs up to date and running smoothly.
Being Windows servers, we monthly have to patch (and invariably
reboot). In 5 months we've had 25 minutes of downtime in total, which I
think isn't too bad... and none of our customers would have noticed at
all (but to be nice to them, I did email them all first).