On Mon, Aug 29, 2016 at 4:51 PM, Sean Donelan <sean(a)donelan.com> wrote:
>
> See that big red button on the wall under the sign "Do Not Push This
> Button!"....
>
>
>
This is going to date me, well, because it happened in my high school years
mid 1970's... but my best power off story was when in senior year we were
working on the school Sperry/Univac Solid State Systems 90 mainframe. (
https://en.wikipedia.org/wiki/UNIVAC_Solid_State) Well this thing used a
Mil-Spec 4K DRUM as its main memory. Now being mil-spec means the motor to
spin the drum is 400 cycle AC. Where do you get 400 cycle AC in a 60 cycle
world? Well you install a 60 cycle motor in the base of this monstrosity,
and connect it via a fan belt to a 400 cycle AC generator that feeds the
drum.
We came in to class one day to warm the Univac up (it took about 30 minutes
to fully power up) and noticed the machine being very quiet when we applied
power. We eventually tracked it down to no power to the drum and it not
spinning.
And the reason the drum was not spinning? The fan belt had broken on the
motor/generator set. :)
Lucky, this was a Technical/Vocational high school, and we ran down to the
auto repair class and bummed a new belt off them. :)
----
Then there was the time an engineer I worked with pressed the lamp test
button on the huge engineering console display for a Burroughs B6700 room
sized mainframe (like 3 foot by 3 foot bank of incandescent register and
status displays) and the inrush caused the entire machine shut down.... but
that's another story. ;)
Chris Dunn
Data Center Operations
ServerCentral
https://www.arbornetworks.com/blog/asert/rio-olympics-take-gold-540gbsec-su…
I've used SP Peakflow before and I have my opinions. With all the
intelligence out there about DDoS attacks, DDoS attackers, DDoS tools and
techniques this article leaves me with ton's of questions.
IE: What industry was the attack target? Was it a single customer or
multiple customers at the same time? What was the attack vector? Was it
multi-vector? What was the duration of the 540Gbps attack? Did you actually
block the attack or did you just report on it from your cloud signaling
alliance aka cloud offering? Could you help explain if the peak of the
attack lasted X minutes, Y hours, Z days? What was the attack targeted
protocol? Was it TCP against TCP or UDP against UDP or UDP against TCP?
I have to be honest, IDK if Arbor is attempting to claim the largest
recorded DDoS attack in the world cup of DDoS attacks but the fact that
your a local appliance shop. Selling to the global 100 and T1-3 ISPs - I'd
hope for more than a marketing ploy to take the top attack vector.
Thought I'd ask Nanog if they heard any whispers about this "white
buffalo", which ISPs were Transiting the event, what course of actions were
taken.
Thanks!
See that big red button on the wall under the sign "Do Not Push This
Button!"....
DC 911 outage caused by contractor error
http://wtop.com/dc/2016/08/dc-911-outage-caused-by-contractor-who-pulled-wr…
WASHINGTON — D.C. is now operating two separate 911 centers after a power
outage caused by human error left the nation’s capital without any
emergency phone service for almost an hour on a busy weekend night.
A contractor working Saturday night inadvertently pulled an emergency
power shut off switch that cut electricity to the 911 phone system and a
call routing system at the District’s Unified Communications Center, said
the center’s Director Karima Holmes.
“Unfortunately because it was human error we weren’t prepared for it,”
Holmes said.
[...]
