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Re: 2 years? can't be linux (was: Re: web server)



Nadav, I disagree with some of the 'excuses' you mentioned as reasons for
downtime. However, there's one that actually made me mad:

>
>  3. Electrical failure - even in Netvision's very reliable server room,
with
>     its UPSs, etc., we've had one multi-hour blackout in the last year
(caused,
>     if I remember correctly, by some backhoe accident in the Haifa MATAM
area,
>     out of Netvision's control).

"even in Netvision's very reliable server room"?! If an external power
failure brings the Netvision server room down, I wouldn't call it very
reliable! In fact, I wouldn't even call it remotely reliable.
We had a very bad experience with Bezeq Int. with a similar problem
(multiple power failures where their UPS didn't work as planned) which
resulted in our very expensive hard drive being trashed. The worst part in
this incident was that it took us weeks to trace the random crashes to the
faulty hard drive.
The moral of this story (for us) was to place a personal UPS as a backup to
Bezeq Int's UPS backup, which performs an organized shutdown of the machine
when the power is down for over 10 minutes.

However, I think this is pathetic - a server room should provide 99.99%
uptime, including electricity. Every medium sized colocation provider in the
states provides this uptime, but when you talk to Netvision/Bezeq
Int./Barak/Internet Gold about guaranteed uptime they scratch their heads
looking totally puzzled.
I guess it's all a matter of what the customers expect: If customers think
that power failures are act of god that there's nothing to do against except
pray, then there's no reason for Netvision to place reliable UPS services to
keep the server farm up through the power failure.


- Aviram




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