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regards from germany
uwe
The new data center appears to be in Dublin, Ireland (making a trace route, the last identifyable hop is google.Dublin.cw.net). I think they've made the decision to build a data center there, when they announced the European headquarters. I wonder if they bring the Zurich data center back on line now.
Go through the alpahbet aa ab ac ad?
First time since www-ab that somebody else but me reports a new data center... Fun to remember the times when posts reporting new data centers where edited at WebmasterWorld because of posting "secret" Google URLs. ;)
Dayo_UK, we're logging the DNS records for www.google.com every 5 minutes. When there is a new IP I can see it (216.239.59.99/104 has not been in our logs yet) and I run a script that digs all www-xx.
I run a script that digs all www-xx
www-ex : 216.239.33.* Santa Clara, California, USA (Exodus Communications)
www-sj : 216.239.35.* San Jose, California, USA (Global Crossing)
www-va : 216.239.37.* Herndon, Virginia, USA (AOL)
www-dc : 216.239.39.* Washington, DC, USA
www-fi : 216.239.41.* USA
www-ab : 216.239.51.* Sterling, Virginia, USA
www-in : 216.239.53.* Santa Clara, California, USA
www-zu : 216.239.55.* Zurich, Switzerland
www-cw : 216.239.57.* Palo Alto, California, USA (Cable & Wireless)
www-gv : 216.239.59.* Dublin, Ireland
They run GWS (Google Web Server, current Version 2.1) on Linux - they programmed their own web server. Rumours are that GWS is based on apache rewritten by google to fit their needs.
Guinness-Vitamins? (Irish Data Center)
Search for that term in Google and not only do you get a whack, but also some excellent advice on a good balanced diet ;)
Also, any idea about what fi stands for? I always thought that this DC was in Finland, but as per Takagi's post, it's not so.
Google Vasectomy
:-)
EW
A much easior way is to go to [validator.w3.org...] and let it check every link for you.
in what ways is a datacentre different from a webserver
Most webservers have one or 2 IP addresses. But for Google it is somehow different. Google now uses 10 data centers. Any time you do a search on www.google.com your query is directed to one of these data centers. Preferable the one that is closest to you, but Google will do some load balancing to make sure that no data center is very busy while another data center has a lot of idle time. For some period (usually 5 minutes) the 'www.google.com' is translated in one IP address. During that time all queries go to that IP address belonging to one of the 10 data centers. After that time, you will get a new temporary IP address. As a user, you don't notice any difference, unless the data centers are giving different results. That used to be once a month for a few days during the 'Google Dance'. During those days the results were different for the same query on the various data centers. As a result, your page went up and down in the SERP (Search Engine Results Page) for a given query; the page was dancing.
You can read more about it at: dance.efactory.de
My next query is
Are all the 10 google data centres identical?
Because whenever i view google.co.in or google.co.jp etc
They are routed to 216.239.35/37/39.100
while google.com is routed to 216.239.51/53.100
-------I am from India
Google came up with an India specific site google.co.in just 2 days back.-----
Because whenever i view google.co.in or google.co.jp etc
They are routed to 216.239.35/37/39.100while google.com is routed to 216.239.51/53.100
I'm in Japan and a few minutes ago I pinged www.google.co.jp, www.google.com and www.google.co.in and all three gave 216.239.33.99 and so did Google France, Denmark, Netherlands, etc. If I do it now, all of them resolve in the 216.239.57.99 IP address.
At this moment not all 10 data centers are really in use. Already for some time sj and zu are redirecting to another data center (e.g. if you click on 'cached' in a SERP, you will see page from a different data center). The new one (gv) is maybe not yet used right now. So you will just get semi-random one of the 7 active data centers.
As G is recruiting & looking for office space in Dublin, maybe someone who just got a job there thought it'd be a good laugh.
or....
maybe it went online at 7 (G) + 22 (V) - 22nd July?
ok - I'll stop now. Time for sunscreen....
Thanks
They used to be all identical, except for a short period each month where one would be updated with new information. This caused the SERPs to vary from one search to the next depending on whether you got old or new data returned. That new information would then spread to all of the other datcentres over a few days.
Google is moving to a more continuous update but you can still see that the various datacentres are slightly different to each other all of the time now.
