subject: How to Prevent Large PST File Corruption? [print this page] Prevent Large PST File Corruption: The best possible way to prevent large PST file corruption is to split that file into smaller sized PST files. This will automatically reduce the PST file size and you will avert the approaching corruption problem. If you split large PST file; then it will break that file into several smaller parts, thereby, reducing the size. Third-party large size PST splitter is a great way to split large sized PST files into smaller size as this is a professional way of approaching the problem. PCVITA Split Magic software is one such tool that you will love to own and use for performing the process to split PST file.