Can I split my 30GB PST file into multiple average PST files of the required size?

Splitting a PST file is always a great idea to protect files from getting corrupted due to their large size. But there are more such reasons for splitting the file. However, it can be done either manually or by any Professional method.
Outlook does not provide any inbuilt utility for splitting PST files.

Therefore, I found there are 3 methods can be done manually that helps to divide large size PST file into small size PST files.
I followed the below steps from this link: How to split pst file into small files with a pst file splitter software

Method 1. Reduce Size of PST file Using Archive Feature You can use Archive features that available in Outlook to split large PST files into smaller parts.
Method 2. Use Import/Export Option to Manage Large Size PST File You can split large PST files with Import/Export wizard.
Method 3. Reduce Outlook Mailbox Size Using Move to Folder Option You can also try to move to folder option to split large PST file in Outlook.

Choosing the manual method is cost-effective but it requires technical knowledge related to Outlook wizard. Also, it has various steps that can easily lead to the corruption of the PST file.

So it's better to choose a professional method for this task, even I used Stellar Splitter for Outlook for the same reason. The best thing is it split multiple files simultaneously as per the requirement such as size, date, email id, and folders.
Here is the link if you want to know more about this tool: PST Splitter Tool to Split PST file into Smaller PSTs