How to split Outlook PST files into smaller ones

"I have Outlook 2007 and it works well but the .pst File is large now and I want split it up. How can I do this?"

Generally speaking, there are two reasons that may require you to split PST files into smaller ones. the first reason is that large size of file and large number of items will lead to slow speed in many operations, such as search, moving, etc., so you can split it into small pieces and obtain a more easier and fast management on it.

And the second reason is that Outlook old versions (97 to 2002) don't support files larger than 2GB, so if your file reaches that limit but you still want to use it with the old versions, then the only way is to split it into small pieces.

Luckly enough, I found a professional PST Spliiter named Advanced Outlook Repair that can help you split PST files into smaller ones. Besides, can also scan the corrupt Outlook personal folders (.pst) files and recover your mail messages, folders, posts, calendars, appointments, meeting requests, contacts, distribution lists, tasks, task requests, journals, notes, etc. in them as much as possible, so to minimize the loss in file corruption.

And below are the detailed steps to help you split Outlook PST files into smaller ones with Advanced Outlook Repair

Step 1: Start Advanced Outlook Repair

Note: Before splitting the large PST file with Advanced Outlook Repair, please close Microsoft Outlook and any other applications that may modify the PST file.

Step 2: Go to "Options" tab, and then select the following option:

and set the size limit to a value you want the small splitted file be limited to. Please note the unit is MB.

Step 3: Go to "Repair" tab

Select the large Outlook PST file as the source PST file to be repaired:

Step 4: Select the large Outlook PST file as the source PST file to be repaired:

You can input the PST file name directly or click the three dot button to browse and select the file. You may also click magnifer button to find the PST file to be processed on the local computer.

Step 5: If you know the Outlook version of the source PST file, then you can specify it in the combo box "Format Auto Determined" button beside the source file edit box, possible formats are Outlook 97-2002 and Outlook 2003-2010. If you leave the format as "Auto Determined", then Advanced Outlook Repair will scan the source PST file to determine its format automatically. However, this will take additional time.

Step 6: Select the large Outlook PST file as the source PST file to be repaired:

You can input the fixed file name directly or click the three dot button beside the column to browse and select the fixed file name.

Step 7: You can select the format of the output splitted PST file in the combo box "Format Auto Determined" button beside the splitted file edit box , possible formats are Outlook 97-2002 and Outlook 2003-2010. If you leave the format as "Auto Determined", then Advanced Outlook Repair will generate the fixed PST file compatible with the Outlook installed on the local computer.

Step 8: Click "Start Repair" button, Advanced Outlook Repair will start scanning the source PST file, collecting the items in it, and then putting them into a new splitted PST file whose name is set in Step 6. We will use Outlook_fixed.pst as an example.

When the size of Outlook_fixed.pst reaches the limit preset in Step 2, Advanced Outlook Repair will create a second new PST file called Outlook_fixed_1.pst, and try to put the remaining items into that file.

When the second file reaches the preset limit too, Advanced Outlook Repair will create a third new PST file called Outlook_fixed_2.pst to accommodate the remaining items, and so on.

In the process, the progress bar

will advance accordingly to indicate the split progress.

After the process, if the source large PST file has been splitted into several smaller new PST files successfully, you will see a messagebox like this:

Step 9: Now you can open the splitted PST files one by one with Microsoft Outlook. And you will find all the items of the original oversized PST file are spreaded among these splitted files.

Note: The demo version will display the following messagebox to show the success of the split

In the new splitted PST files, the contents of the messages and attachments will be replaced with a demo information. Please order the full version to get the actual contents.

For detailed information about how to use Advanced Outlook Repair, please visitUsing Advanced Outlook Repair to Split Large File into Smaller Ones