Data Center Knowledge recently published a “Google Data Center FAQ”. As most other web geeks, we here at Pingdom tend to find this kind of information quite fascinating. We have extracted some interesting tidbits, and also used the information to construct a map with all current and under-construction Google data center locations that are known today.

So how many data centers do Google use, and where are they?

Google data center locations

If you include data centers that are under construction, Google has 19 locations in the US where they operate data centers, 12 in Europe, one in Russia, one in South America, and three in Asia. Not all of the locations are dedicated Google data centers, since they sometimes lease space in other companies’ data centers.

Above: Google data centers world wide.

Above: Google data centers in the USA.

Above: Google data centers in Europe.

We have created a map you can explore over at Wayfaring.

How much does Google spend on data centers?

According to Google’s earnings reports, they spent $1.9 billion on data centers in 2006, and $2.4 billion in 2007.

Google unveiled four new data center projects in 2007. Each has a cost estimate of $600 million, which will include everything from construction to equipment and computers.

Google’s criteria when selecting locations for data centers

• Large volumes of cheap electricity.
• Green energy. Focuses on renewable power sources.
• Proximity to rivers and lakes. They use a large amount of water for cooling purposes.
• Large areas of land. Allows for more privacy and security.
• The distance to other Google data centers (for fast connections between data centers).
• Tax incentives.

Above left: Google’s first production server. Above middle: Google’s The Dalles data center in Oregon. Above right: Close-up of a Google server rack.

What’s up next?

Google has been looking at sites in Asia, such as Taiwan and Malaysia. There are also reports of a possible data center in Lithuania (Eastern Europe). Google is even more secretive about their US locations, but they have bought 466 acres of land in Blythewood, South Carolina.

Google secrecy

Google has made it difficult both to find out where they keep their data centers and how many they have. One big reason for this is that almost all IP addresses that Google uses (and there are a lot of them) are listed to their Mountain View, California address, so just looking at IP addresses (with IP WHOIS or IP-to-location databases) won’t help you figure out where their data centers are or how many they have.

In addition to this, Google usually seeks permits for their data center projects using companies (LLCs) that don’t mention Google at all, for example Lapis LLC in North Carolina and Tetra LLC in Iowa.

Since Google tends to be quite secretive about their data centers in general, the information we have presented here most likely isn’t 100% complete.

Find out more

Check out the excellent Google Data Center FAQ over at Data Center Knowledge for more details and information.

If you have additional information about Google data centers, please share it in the comments.

Google’s App Engine suffered from increased data access latency and errors yesterday, including problems serving applications. According to TechCrunch, the problems lasted for approximately six hours.

From the App Engine status page:

On July 2nd, all applications experienced increased error rate and latency with read and write Datastore and memcache operations, as well as some serving errors. Datastore access and serving have been fully restored as of 12:25 PM PDT.

What happened yesterday exposed a couple of interesting weaknesses for App Engine.

Read more

We have exciting news to share. As you may have noticed, we made some changes to the Pingdom website yesterday, and the main thing we added was a new account type that many of you are going to love: Pingdom Free.

Now, for the first time ever, you can use Pingdom for free. We’re not talking about a free trial, but a completely free account that you can use for as long as you like, no strings attached.

In other words, you are getting a professional uptime monitoring service for free. With the Pingdom service, you’ll be the first to know when your site goes down.

Read more

If you’ve been following this blog for a while, you’ll know that we love everything geeky, and we have often put together themed galleries that appeal to tech geeks like ourselves.

Here is a collection of some of the geekiest galleries that have come and gone on this blog.

Read more

Wordpress.com, the popular blogging service from Automattic, has some interesting growth statistics posted on its website. Among other things, there is a graph showing how many new blogs are created on the service each day.

Based on the graphs that Automattic provides us with, it’s actually not that difficult to estimate how much Wordpress.com will grow in 2009. Which, of course, was a temptation we couldn’t resist!

Read more

Operating systems on supercomputers used to be custom-made affairs, but this has changed. These days, Linux has become a popular choice for supercomputers. But how popular? You may be surprised.

Top500.org maintains a list of the fastest supercomputers in the world. A new list was published yesterday (it happens twice a year), so we took the opportunity to go through the list and find out what OS the top 20 supercomputers are using.

It took some work, but the results are interesting.

Read more