We showed you how to create a new data file in Outlook 2010, but there is more to that. Data File has a format PST and is used to store all emails, new emails are downloaded and stored in this file. As more and more emails clutter your inbox, PST file can become rather large, in some cases more than 2GB in size.
In case the Data File becomes corrupt, Outlook comes with a build-in tool to repair it called Outlook Inbox Repair Tool. When you add a new email account in Outlook, a PST file is automatically created for that account the following destination,
but the most easiest way to access it via Outlook 2010 itself, unless ofcourse Outlook is not working.
Head over to Account Settings and navigate to Data Files tab, select the desired data file and hit Open File Location to open the directory where it is residing.
You can set the default data file, edit settings, remove it, or add a new data file from this window. PST files can only be opened from within Outlook, it is advisable to make a backup of this data file every week. If you are using a Home Server, making routine backups daily could help in case the file becomes corrupted beyond repair.
Be warned not to try out any 3rd party tool which can compress the PST file, some of them can actually corrupt the data file instead of compressing it. The best way to fix any problem with PST file is to use the default Outlook Inbox Repair Tool.