In Outlook 2002 and earlier, the. Pst files are in the American National Standards Institute (ANSI) format, and the overall size has a limit of 2 gigabytes (GB).

• 在Outlook 2002及早期版本中；.；pst文件采用的是美国国家标准协会(American National Standards Institute；ANSI)格式；整体大小限制为2 GB。