Q. What is PST file?
Ans: A Personal Folders file (PST) is an Outlook data file that stores messages and other items. Home user as well as organizations depends upon MS outlook for their messages, information, calendars and contacts. PST files uses a fixed block allocation, the file is enlarged by a fixed amount of bytes. So when email messages are added to a .pst file, its file size is automatically adjusted by the mail client.
Outlook 2002 and earlier use ANSI format for PST files. This format has a file size limit of 2GB.
Exceeding the file size limit prompt error message ".pst has reached maximum size limit," and could become corrupted. In Outlook 2003 and later versions, PST files are created in the Unicode format and have a default maximum size of 20 GB.
