There are multiple solutions available for Splitting PST file but its very difficult to choose one of them So I want to suggest you this Regaintechnologies PST Splitter tool that can easily Split your large size of PST file into a small size of PST files in just few clicks. When the software Splitting the files then its maintaining its original data properties. This Software Splits PST files of both UNICODE and ANSI formats without any data loss risk.