How much quantity of tha data that hotmail.com.uk transfer to Outlook.com

How much quantity of tha data that hotmail.com.uk transfer to Outlook.com
                           
     Microsoft formally announced that Hotmail users has completed the transfer to Outlook.com,now,Outlook.com's
active account number has reached 400 million,and the quantity of migration data caused by it is unexpectedly up to
150PB.
     If you do't kown exactly how large a volume of data 150 petabytes(1PB=1024TB)is,you can look at this information
graph made by MIcrosoft.
     We can see from the graph,if convert all 150PB into music,we need 300000 years to hear out;If the 150 pb is
transformed into a mail of regular size,then 120 million years is needed to send out these emails;If everyone in the
world issued a tweet every day,you need 20 years to equal the amount of data;And if the 150PH is all stored in DVD,
then the height of the DVD stacked up will be 6 times of mt.Everest.
     Outlook.com adopt new interface which is different from Hotmail,more clean and concise,and the same time has carried on intercommunication and integration with SkyDrive,contacts and calendar.
     It is said that Microsoft will completely close the Hotmail service in the future,so that hundreds of millions of users can be transferred to Outlook.com.