How to Split Large OST Files into Multiple Files?

OST files are used by Microsoft Outlook to store offline copies of Exchange mailbox data. Over time, these files can become large and unwieldy which is leading to performance issues. One way to manage large OST files is to split OST files into smaller ones. Smaller files are easier to manage, backup, and restore. Then, it becomes more manageable files. In this blog, we'll discuss various methods to break down large OST files into multiple files. Moreover, we will define an automated solution, Cigati OST Splitter, to merge your targeted OST files without data loss.?

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What is an OST File?

An OST, or Offline Storage Table, is a data file created by Microsoft Outlook when configured to work in Cached Exchange Mode. This file allows users to work with their Exchange mailbox data even when offline or disconnected from the Exchange server. The OST file stores a synchronized copy of the user's mailbox data, including emails, contacts, calendars, and other items. When the user is back online, Outlook synchronizes the changes made offline with the Exchange server, ensuring that the mailbox remains up-to-date across devices and locations.

Situations Arising from Large OST Files

Large OST files can lead to several issues, including performance problems and potential data corruption. Here are some common problems associated with large OST files:

• Large OST files can cause Outlook performance issues such as slow loading times and delays in sending/receiving emails.
• They may lead to synchronization problems between the OST file and the Exchange server.
• These files can consume excessive disk space on the local computer, potentially leading to storage constraints.
• They can make it difficult to back up Outlook data efficiently, especially if regular backups are necessary.
• A large OST file may contribute to Outlook crashes or freezes, disrupting user productivity.

Top 3 Techniques to Split Outlook OST into Multiple Files

Splitting large OST files into multiple smaller files can significantly improve Outlook's performance and make data management easier. There are several methods to split extensive OST files into multiple smaller files. You can prefer using built-in Outlook features or an automated solution to Split Outlook OST files. The key is to choose a method that suits your needs and ensures the safety of your data. Let's explore some of these methods to split enormous OST files.

#1: Disabling Add-ins in Outlook

If you're using Microsoft Outlook, you can manually split OST files by creating a new Outlook Data File (PST) and moving items from the OST file to the PST file. Here are the steps to disable add-ins:

• First, Open Microsoft Outlook on your computer.
• Click on the File tab in the top-left corner of the Outlook window.
• In the File menu, select Options from the list on the left side.
• In the Outlook Options window, click on the "Add-ins" category on the left sidebar.
• You will see a list of add-ins that are currently enabled in Outlook. At the bottom of the window, next to Manage, select "COM Add-ins" from the dropdown menu and click on the "Go" button.
• In the COM Add-ins window, you will see a list of all the COM add-ins installed in Outlook. Uncheck the boxes next to the add-ins you want to disable.
• Click the "OK" button to confirm and close the COM Add-ins window.
• Back in the Outlook Options window, click the "OK" button to save your changes and close the window.
• Restart Microsoft Outlook to apply the changes and disable the selected add-ins.

By following these steps, you can effectively disable add-ins in Microsoft Outlook. This can help improve performance and troubleshoot issues related to add-ins. You can effectively manage and organize your OST files for a smoother Outlook experience.

#2: Reducing Outlook OST File Size through Archiving

Archiving OST data is a common practice to reduce the size of the OST file. In MS Outlook, OST files can grow large over time due to accumulated emails, attachments, and other data. Here are steps to archive OST data and reduce its size:

• Primarily, launch Microsoft Outlook on your computer.
• After that, click on the "File" tab>>Tools.
• Pick the Mailbox Cleanup from the drop-down list.
• Now, you can enable AutoArchive to transfer older mailbox items to the archive folder automatically.
• Also, it provides the choice to remove unnecessary items. For deleting tap on Delete Option.
• Please click the Close button to complete the process.

By following these steps, you can effectively archive OST data to reduce its size and optimize Outlook performance. You do not pay any charges to execute the manual method. However, it has some limitations while performing it. Further, we cover the general limitations:

Disadvantages of Using Manual Technique:

• Time-consuming process.
• Prone to human error.
• Limited scalability.
• Requires technical expertise.
• Difficult to maintain consistency.
• Risk of data loss or corruption.
• Not suitable for large-scale operations.

#3: Reliable Solution to Split an Oversized Outlook OST File

The Cigati OST Splitter Tool is the best-recommended software for splitting large OST files. It allows users to break down OST files in bulk into either a separate folder or a newly created PST file. Also, it has a user-friendly GUI for a smooth user experience without altering data. Furthermore, users can enhance the security of their split files by applying encryption. There is no need for Outlook installation to split a large OST file. Moreover, it is supported by all OST file versions of Outlook. Also, you have the option to select the output location for saving the resulting OST file.

Additionally, you can use Ignore Duplicate Mail to avoid splitting unwanted emails.

Step-by-Step Guide to Splitting MS Outlook OST Files

• Foremost, launch and run the OST Splitter Tool on your screen.
• Next, pick the OST FIles and tap on the Add File Button.
• Now, select the desired OST File to split >>Open Button>>Next.
• Then, tick the required folder and choose the splitting options>>Next.
• In the next section, enter the location to save the resultant file>>Choose Button.
• Finally, tap on the Split Button to split the OST File.

Conclusion

In this blog, we've explored various techniques for splitting oversized OST files. The manual methods are available. However, they may not always guarantee a resolution to the issue and can potentially lead to severe data loss. To mitigate these risks, opting for a professional solution is advised. As we conclude, manual methods do not apply to home users. Thus, we strongly recommend users consider using the suggested software to split OST files.