Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.


View this topic in a long page with up to 500 replies per page Create new topic
1 | 2 
203 posts

Master Geek


  Reply # 264340 16-Oct-2009 18:50
Send private message

i heard a plausable explanation as to what happened on sunday last.
engineers took the ups off line to perform scheduled maintenance.
the stand by generator took over as planned and work prceeded as normal then !!!!!!!!
the generator shut down from a faulty oil pressure switch . alternate power was slow to be restored as no one knew how to manually change the sytem over .
e&oe this a theory and in no way is an official explanation .

2242 posts

Uber Geek
+1 received by user: 353

Trusted
Subscriber

  Reply # 264422 16-Oct-2009 23:29
Send private message

Interesting, I just heard the same today :) Apparently Emerson (the guys who did the maintenance) will know the REAL story.

 
 
 
 


1200 posts

Uber Geek
+1 received by user: 3

Trusted

  Reply # 264437 17-Oct-2009 01:00
Send private message


I heard that it was power related as well, all the fancy technology in the world doesn't help if you ain't got no juice baby!

Reminds me of a interesting story someone relayed to me about a data centre which had backup generators, and spare main diesel tanks positioned further away from the data centre itself so as to not blow the data centre up.

They tested their generators once a month like good little geeks, then the power went out for real, for a reasonable amount of time, and the smaller tank of diesel positioned next to the generator ran out of diesel, and the pump which pulled it from the main tanks was not working because it was plugged into the non-backup powered circuits, so the generator ran out of juice and stopped.

All worked fine during testing because they never actually disconnected from the main power grid, so the pump had stayed powered during the monthly drills.

I wonder what caused the IBM data centre power outage? If servers corrupted, then their SAN or possibly their vm layer went down hard... Should have hit the UPS's and done a safe shutdown.

I guess the people which know arn't talking, under strict instructions from lawyers. :-)

You know, google's idea (which they managed to keep secret for a amazingly long amount of time BTW) is to have two sealed lead acid 12 Volt batteries built into the actual server, so each server had exactly enough power to do it's shutdown without scaling or efficiently problems. Of course to achieve this, they had specially made 12V rail motherboards made.

I wish IBM (and HP) would built the option to slide small UPS's into servers, they could slide in like the hotswap redundant power suppliers.






Tyler - Parnell Geek - iPhone 3G - Lenovo X301 - Kaseya - Great Western Steak House, these are some of my favourite things.

2242 posts

Uber Geek
+1 received by user: 353

Trusted
Subscriber

  Reply # 264906 18-Oct-2009 21:12
Send private message

exportgoldman:

I wish IBM (and HP) would built the option to slide small UPS's into servers, they could slide in like the hotswap redundant power suppliers.



That is very unlickly as running a UPS infront of another UPS ie infront of a the Data centres main in line UPS is not a good idea as it introduces all manner of nasty hormonics. If your DC is onto-it they won't allow you to.

Even just asking to put a little 1000VA UPS bought from DSE infront of a several $100,000 dollar enterprise UPS will also likely offend the Data Centre's infrustructure manager :)

exportgoldman:

I wonder what caused the IBM data centre power outage? If servers corrupted, then their SAN or possibly their vm layer went down hard... Should have hit the UPS's and done a safe shutdown.



Data Centre UPS's aren't like the little residential or SOHO ones, you don't get to plug a USB cable into them and have your servier notified when its running on battery.

1 | 2 
View this topic in a long page with up to 500 replies per page Create new topic



Twitter »

Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:





News »

Why I'm not an early adopter
Posted 21-Nov-2017 10:39


Netatmo launches smart home products in New Zealand
Posted 20-Nov-2017 20:06


Huawei Mate 10: Punchy, long battery life, artificial intelligence
Posted 20-Nov-2017 16:30


Propel launch Disney Star Wars Laser Battle Drones
Posted 19-Nov-2017 21:26


UFB killer app: Speed
Posted 17-Nov-2017 17:01


The case for RSS — MacSparky
Posted 13-Nov-2017 14:35


WordPress and Indieweb: Take control of your online presence — 6:30 GridAKL Nov 30
Posted 11-Nov-2017 13:43


Chorus reveals technology upgrade for schools, students
Posted 10-Nov-2017 10:28


Vodafone says Internet of Things (IoT) crucial for digital transformation
Posted 10-Nov-2017 10:06


Police and Facebook launch AMBER Alerts system in NZ
Posted 9-Nov-2017 10:49


Amazon debuts Fire TV Stick Basic Edition in over 100 new countries
Posted 8-Nov-2017 05:34


Vodafone VoIP transition to start this month
Posted 7-Nov-2017 12:33


Spark enhances IoT network capability
Posted 7-Nov-2017 11:33


Vocus NZ sale and broadband competition
Posted 6-Nov-2017 14:36


Hawaiki reaches key milestone in landmark deep-sea fibre project
Posted 4-Nov-2017 13:53



Geekzone Live »

Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.



Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.