When you need to transfer very large amounts of data over the internet, sooner or later you will hit a limit where it will actually be faster to send that data on disks over regular mail (often called sneakernet). Internet transfer rates are simply not enough for large data sets.

Imagine a company with two offices in different cities, perhaps even in different countries. Each office has a 100 megabit internet connection. If the company needs to send a large amount of data from one office to the other, theoretically a 100 megabit connection can muster about 45 gigabyte in one hour if there are no bottlenecks on the way. This ends up being just over one terabyte of data in 24 hours.

In other words, for anything larger than one terabyte, it would be faster for this company to just send the data on disks for over-night delivery.

What does Google do?

Google’s initiative to transfer all the Hubble space telescope data is a good case study. The Hubble data takes up 120 terabyte (120,000,000,000,000 byte). How does Google transfer it? Not over the internet. Instead they send actual physical disk arrays via regular mail, something they have dubbed, for fun, FedExNet. This allows them to get the data within 24 hours.

To transfer the same amount over the internet in 24 hours, Google would have to be able to achieve transfer rates of more than 11 gigabit/s running constantly maxed out. On a regular 100 megabit connection, transferring 120 terabyte of data would take almost four months (111 days).

Is Internet 2 the answer?

The basic point here is that the internet still needs a lot more capacity. How soon can we reach such massive transfer rates? There is hope at the horizon, but FedEx probably hopes the answer is “never.”

Trailblazers, creatives and innovators have taken the Internet to where it is today and made it an essential part of our everyday lives. We have selected a number of interesting “firsts” from the history of the Internet (and the Web) for your reading pleasure.

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Facebook has announced that it now has 400 million active users. Just one year ago Facebook had 150 million users, so 2009 was an incredible year for the social media giant.

There can be no doubt that Facebook is pretty much unstoppable at the moment, a real juggernaut. For some perspective on Facebook’s amazing growth, we have put together this infographic. We hope you’ll enjoy it!

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Sometimes you want an easy way to share your Pingdom monitoring data with others. So far we’ve had public report pages that you can use, but now we’ve added one more sharing method that is very flexible and easy to use.

Enter our new “report banners”.

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Unless you’ve been hiding under a rock lately, you’ll know that last week Apple announced the iPad, its new tablet device. Reactions have been a mixed bag, and a storm of discussion has swept through the blogosphere about various features the iPad should or shouldn’t have had.

One of the main complaints so far has been the iPad’s lack of multitasking. (To be precise, multitasking is a bit of a misnomer here; the iPhone OS has multitasking. What people really mean is only allowing one app at a time to run.)

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The tech industry is littered with billionaires. We all enjoy a good income, but some clearly have earned more than others. Much, much more. The question is, how much money do the really big names in tech actually have?

To find out, we went through the Forbes 400, a list of the wealthiest Americans, and filtered out the people who work within the tech field, or more specifically: IT.

So here they are, the 20 richest Americans in tech today.

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