I have read news about a power problem in the USA. Is there a backup power system for the Wikipedia servers and there conection to the internet?
Walter Vermeir wrote:
I have read news about a power problem in the USA. Is there a backup power system for the Wikipedia servers and there conection to the internet?
I have no idea what our power infrastructure is like, but I wouldn't worry too much; the server is on the opposite end of the country from today's big power outages.
-- brion vibber (brion @ pobox.com)
Brion Vibber wrote:
Walter Vermeir wrote:
I have read news about a power problem in the USA. Is there a backup power system for the Wikipedia servers and there conection to the internet?
I have no idea what our power infrastructure is like, but I wouldn't worry too much; the server is on the opposite end of the country from today's big power outages.
What protection do we have against California brownouts?
All we can hope for with massive blackouts like today's is that the system has enough backup power to shut itself off in an orderly fashion without hurting itself. Beyond that all we can do is wait for the power to come back on. Despite our sympathies, I doubt that emergency personnel would attach the same importance to Wikipedia that we do. :-)
Ec
Our colocation facility "Guarantees" 100% uptime. So, they have generators and all that jazz. However, the power grids that went down today were designed with mechanisms that were supposed to keep the cascading failure from happening. So, there are generators and big UPSes, but we don't know for sure that they will work. We just have the colocation's "Guarantee" that they will.
That's the best we can hope for, IMHO.
Jason
Ray Saintonge wrote:
Brion Vibber wrote:
Walter Vermeir wrote:
I have read news about a power problem in the USA. Is there a backup power system for the Wikipedia servers and there conection to the internet?
I have no idea what our power infrastructure is like, but I wouldn't worry too much; the server is on the opposite end of the country from today's big power outages.
What protection do we have against California brownouts?
All we can hope for with massive blackouts like today's is that the system has enough backup power to shut itself off in an orderly fashion without hurting itself. Beyond that all we can do is wait for the power to come back on. Despite our sympathies, I doubt that emergency personnel would attach the same importance to Wikipedia that we do. :-)
Ec
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Walter Vermeir wrote:
I have read news about a power problem in the USA. Is there a backup power system for the Wikipedia servers and there conection to the internet?
Yes. The servers are in San Diego, CA, so the current crisis has not affected them in any way. But of course, a future crisis could affect them.
But the server facility has multiple backup power sources. My understanding is as follows:
1. The server co-location facility has two redundant connections to different parts of the local grid, to protect against a highly localized failure due to unauthorized digging and the like.
2. In the event of power failure anyway, there is apparently battery backup for a sufficient time for the generators to get going.
3. There are two redundant generators in case one fails to start.
4. There is enough fuel on-site to run for 12 hours (I think), and the facility has a "2 hour" contract with local suppliers so that they can call and get more fuel delivered within 2 hours.
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None of this is an absolute guarantee, of course, but it's pretty good.
--Jimbo
Damn good, Ill say. All thats missing then is a dedicated satellite linkup to broadcast in case the isp catches fire. :)
Yes. The servers are in San Diego, CA, so the current crisis has not affected them in any way. But of course, a future crisis could affect them.
But the server facility has multiple backup power sources. My understanding is as follows:
- The server co-location facility has two
redundant connections to different parts of the local grid, to protect against a highly localized failure due to unauthorized digging and the like.
- In the event of power failure anyway, there is
apparently battery backup for a sufficient time for the generators to get going.
- There are two redundant generators in case one
fails to start.
- There is enough fuel on-site to run for 12 hours
(I think), and the facility has a "2 hour" contract with local suppliers so that they can call and get more fuel delivered within 2 hours.
None of this is an absolute guarantee, of course, but it's pretty good.
--Jimbo _______________________________________________ Wikitech-l mailing list Wikitech-l@wikipedia.org
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