The book is structured as a B-tree with 512 byte nodes and leafs.8
Outlook 2002 and beforehand use ANSI (extended ASCII with a codepage) encoding for their .pst and .ost files. This architecture has a best admeasurement of 2 GB (231 bytes) and does not abutment unicode. A book beyond this admeasurement is acceptable to accord absurdity messages, such as ".pst has accomplished best admeasurement limit," and could become corrupted. Although superseded, this architecture continues to be accurate by Microsoft Outlook 97 and after (98, 2000, 2002 (XP), 2003, 2007), by Internet Message Access Protocol Adaptation 4rev1 (IMAP4) accounts and by HTTP accounts.9
From Outlook 2003 and onward, the accepted architecture for .pst and .ost files is Unicode (UTF-16 little-endian). The use of 64-bit pointers instead of the 32-bit pointers of the beforehand adaptation accustomed to affected the 2 GB limit. Now, there is a user-definable maximum-file admeasurement up to 20 GB. This architecture is accurate by Microsoft Outlook 2003 and after (2007) 910 A book that is created in the personal-folders architecture in Outlook 2003 or in Microsoft Office Outlook 2007 is not accordant with beforehand versions of Microsoft Outlook and cannot be opened by application those earlier versions.1 If this absolute is accomplished or sometimes exceeded, retrieval of the .pst book can be difficult if not impossible.
As with any file, .pst files can become corrupted. Prior to Outlook 2003, the absence .pst book architecture was ANSI and had a best admeasurement of 2 GB. If the .pst book were accustomed to abound over 2 GB, the book would become unusable. Microsoft provides PST2GB a apparatus that can be acclimated to abbreviate a .pst book that has developed over 2 GB. Microsoft additionally provides scanpst.exe, that can be acclimated to adjustment added .pst file-corruption issues. In Outlook 2003 and 2007, .pst files are created in the Unicode architecture and accept a absence best admeasurement of 20 GB. Outlook 2010's absence best admeasurement has added to 50GB.11
Outlook 2002 and beforehand use ANSI (extended ASCII with a codepage) encoding for their .pst and .ost files. This architecture has a best admeasurement of 2 GB (231 bytes) and does not abutment unicode. A book beyond this admeasurement is acceptable to accord absurdity messages, such as ".pst has accomplished best admeasurement limit," and could become corrupted. Although superseded, this architecture continues to be accurate by Microsoft Outlook 97 and after (98, 2000, 2002 (XP), 2003, 2007), by Internet Message Access Protocol Adaptation 4rev1 (IMAP4) accounts and by HTTP accounts.9
From Outlook 2003 and onward, the accepted architecture for .pst and .ost files is Unicode (UTF-16 little-endian). The use of 64-bit pointers instead of the 32-bit pointers of the beforehand adaptation accustomed to affected the 2 GB limit. Now, there is a user-definable maximum-file admeasurement up to 20 GB. This architecture is accurate by Microsoft Outlook 2003 and after (2007) 910 A book that is created in the personal-folders architecture in Outlook 2003 or in Microsoft Office Outlook 2007 is not accordant with beforehand versions of Microsoft Outlook and cannot be opened by application those earlier versions.1 If this absolute is accomplished or sometimes exceeded, retrieval of the .pst book can be difficult if not impossible.
As with any file, .pst files can become corrupted. Prior to Outlook 2003, the absence .pst book architecture was ANSI and had a best admeasurement of 2 GB. If the .pst book were accustomed to abound over 2 GB, the book would become unusable. Microsoft provides PST2GB a apparatus that can be acclimated to abbreviate a .pst book that has developed over 2 GB. Microsoft additionally provides scanpst.exe, that can be acclimated to adjustment added .pst file-corruption issues. In Outlook 2003 and 2007, .pst files are created in the Unicode architecture and accept a absence best admeasurement of 20 GB. Outlook 2010's absence best admeasurement has added to 50GB.11
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