Speaking of Petabytes ...
"While the rise of the terabyte (and petabyte) era is terrifying for some, others see it as an opportunity to fundamentally transform how their organisations operate and make decisions.
According to Gartner, Big Data is forecast to drive $34 billion of IT spending in 2013. But what most people think of when they hear the term ‘Big Data’ almost certainly isn’t what I'm talking about. What many organisations still regard as Big Data – unstructured information contained in emails, electronic documents, social media interactions etc – is just a thin layer in the vast strata of data available to them."
Read more: http://www.itproportal.com/2013/03/20/rise-machines-why-big-data-getting-bigger-every-day/#ixzz2PRhjVGac