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The Default path for All Microsoft Office Outlook .pst file location is the User data(Your account name)/Local Settings/Application Data/Microsoft/Outlook/ this is where the .pst files are stored by default!!! this goes for All Windows OS! Tuesday, June 05, 2012 12:18 PM.
By default, Personal Folders (.pst) and offline Outlook Data File (.ost) files are in Unicode format in Microsoft Outlook 2010 and Outlook 2013.The overall size of .pst and .ost files has a preconfigured limit of 50 GB.This limit is larger than the limit for Unicode .pst and .ost files in Outlook 2007 and Outlook 2003. Make sure that your large .pst file and the destination .pst file are both open in Outlook. 2  Right-click the folder in your large .pst file that you want to move to the other (smaller) .pst file, and then click Move Folder. 3  In the Move Folder dialog box, select the destination .pst file, and then click OK.