Microsoft Outlook contains different types of files including contacts, tasks, notes, email messages, journals, etc. All these files are stored in PST file format. PST file format includes ANSI PST and Unicode PST file formats. 2 GB is the size limit for the file in ANSI PST format and 20 GB is the size limit for the file in Unicode PST format which has now been extended to 50 GB in MS Outlook 2010. PST file may get corrupted if its size limit is exceeded and thus, you will lose all your important data items including email messages. You can split a large PST file into small PST files by some features of Microsoft Outlook: Import and Export, Archive and Move to Folder. “Move to Folder” doesn’t perform PST split function but it helps to move files from one PST folder to another by creating a new PST.
Use “Archive” feature of MS Outlook
- Open Microsoft Outlook application and then open the PST file that you need to move
- Click File tab, click on Cleanup Tools box and then click on Archive
- Archive dialog box will appear. Select “Archive this folder and all subfolders” check box (if not checked)
- Choose the folder you need to move. You can also select items older than a particular duration by selecting “Archive items older than” option
- Browse to select location to store the items in new PST file and click OK
Use “Import and Export” feature of MS Outlook
- Open Microsoft Outlook application and click File tab > Account Settings > Account Settings
- Account Settings window will appear, click Data Files > Add
- Create or Open Outlook Data File dialog box will appear. Give the location and name for new file. Click Ok and then Close to close Account Settings window
- Again click File tab > Open > Import. Import and Export wizard will appear
- Now, select Export to a file option and click Next
- Select PST file and click Next, choose folder and items and click Next
- Browse location to store new file
- Before exporting items, choose an option and click Finish
- Create Outlook Data File window will appear. If you want then you can set password otherwise click Cancel.
Use “Move to Folder” feature of MS Outlook
- Open Microsoft Outlook application and click File tab > New > Outlook Data File
- New Outlook Data File dialog box will appear. Select Office Outlook Personal Folder and click OK
- Create Microsoft Personal Folder dialog box will appear. Specify a name for the new PST file
- Go to Edit menu and click Move to Folder
- Move Items dialog box will appear, click on New
- Create New Folder dialog box will appear. Specify a new name for the new PST file in Name text box
- Select new PST file within Select where to place the folder option and click OK
- You should select new folder of new PST file within Move Items dialog box and click OK.
Also Know About: PST Merge Technique
All the above methods are quite complicated and lengthy which involves much time of user. These solutions are not guaranteed solution as it moves folder to new PST file instead of actually split it. If you need an optimal solution to split PST files, then you may use third party software. Third party software splits your oversized PST file into number of PST files without damaging original PST file.
SysInfoTools PST Split tool is a high powered solution to split larger PST file into multiple PST files. Free demo version of this software is available for trial purpose.