In 2009 it was reported Google was planning to have ten million servers and an exabyte of information. It’s almost certain that point has been passed, particularly given the volume of data being uploaded to YouTube which alone has 72 hours worth of video uploaded every minute.
Facebook is struggling with similar growth and it’s reported that the social media service is having to rewrite its database. Last year it was reported Facebook users were uploading six billion photos a month and at the time of the float on the US stock market the company claimed to have over a 100 petabytes of photos and video.
Microsoft
Microsoft says that Hotmail has over a billion mailboxes and “hundreds of petabytes of data”.
shubh gaikwad blog 