Microsoft Outlook PST is the core file which works like a container that contains the copy of all the user files, data and personal information that you use to store in the Microsoft Outlook. Most commonly the .pst files are used to store archived items.
The .PST files uses fixed-block based allocation scheme, the file is enlarged by a fixed amount of bytes and the files internally maintains information about the allocated and non allocated blocks. It means that when the files like email messages are added in the .PST file, its file size automatically adjusted by the mail client. But when email deleted, the .pst file size remain the same, marking the space as unallocated so that it wil retain data in future.
When the size of Microsoft outlook grows much, the user will have problems regarding operation with that PST file. Generally when the file reaches over 1.5 GB, you will start encountering slower performance. People think that outlook has some problem but actually it is the outlook PST files whose big size is the problem. Other than that there is a problem of 2GB oversized outlook PST. If the file size of outlook PST file crosses the limit of 2GB, it automatically corrupts. Fortunately this problem is not in the Outlook 2003 and later versions due to the introduction of Unicode file format for outlook PST files but still in the previous versions it is still unsolved.
The solution to make the outlook faster again can be done via splitting outlook PST file. When you split PST file, you can make any numbers of PST files that can be used separately as they are independent from each other. Microsoft Outlook does not provided any utility for this kind of work but there are software development companies that made professional applications to split PST files safely. The Split PST is the application that is popular for split PST file easily and effectively so that they can be used the same way as the original. Moreover all the metadata of the user files will be retain intact so that it help operations better.
The features of Split PST application are:
- User can view messages in 3D view format
- It will split oversized outlook PST files in to smaller size PST files
- It restores the formatting from RTF and HTML messages
- You can save the splitted PST file on any disk including network that is visible by host Operating system
- It creates unique profile for every PST file
- Run on all the version of Microsoft Outlook
To split outlook PST file, it is a non destructive and safe way that ensures complete safety of the original PST files as the new divided files are created in new location, your original file is remain the same. So, after the outlook PST file splitting completes, you can use the new files and remove the older file or take it as a backup on some disk too.
It is capable to run on all the versions of Microsoft Windows including NT4, 2000, ME, XP, 2003, Vista etc. After split PST files, it requires to import the file in to Microsoft Outlook for further use.
Windows ME/ NT/ 2000/ 2003/ XP/ Vista/ Windows 7 
