Users can pick up their own books and recycling procedures will be available for old books. Because all of the data in your Microsoft Outlook folders are stored in a file on the Exchange server, your mail account can consume a lot of disk. The total amount of disk space your Outlook folders are using is displayed in the total size field near the top of the Folder Size dialog box. If the total size equals or exceeds 18MB, you might want to manage your Outlook folders to reduce the amount of disk space they take up. There are several methods for managing your Outlook folders either manually or automatically on a regular basis.
Personal Folders provide an alternative to storing data on the server.
Personal Folders are saved on your personal computer s hard drive with a file extension .pst. When you archive old messages, you are storing data to a Personal Folder named archive.pst on your local hard drive. You can set up subfolders in your personal folder to store mail items, calendar items, or other item types. If you access your Exchange account from a PC other than your own, you will not be able to see items stored in Personal Folders. The Microsoft Outlook Help files provide detailed instructions for each of the folder management methods previously mentioned.