Mitigating and Backing Up Office 365 Public Folders

Michael Felton
Backupology
Published in
4 min readAug 25, 2023

Office 365 has become an essential part of modern businesses, offering a suite of powerful tools and services for productivity and collaboration. Within this ecosystem, public folders play a vital role in organizing and sharing information across organizations.

However, as businesses evolve, so do their data management needs. Data management operations in Office 365 can be easily achieved through proper backup and recovery practices. Therefore, migrating and backing up Office 365 public folders is a crucial task. With proper Office 365 total backups, businesses ensure data integrity, availability, and security.

In this article, we will explore the why, what, and how of this process.

Why Migrate and Back Up Office 365 Public Folders?

Before delving into the migration and backup strategies, it’s essential to understand the rationale behind these processes:

  • Data Preservation: Public folders often contain critical information, such as project documents, contact lists, and calendars from numerous Office 365 apps, such as Exchange Online, OneDrive for Business, Microsoft Teams, SharePoint Online, and more. Public folder migration and backups ensure that no data is lost during transitions or accidental deletions.
  • Business Continuity: In the event of a data loss or system outage, having a backup of public folders ensures that your organization can continue its operations without disruption. Businesses can easily use their public folder data backups to recover to a previous version with little to no effort.
  • Compliance and Governance: Many industries have strict compliance requirements regarding data retention. Backing up public folders helps organizations meet these regulations. On the other hand, failure to meet regulations can result in costly damages, hefty fines, and loss of customer trust.
  • Security: Data breaches and cyberattacks can happen to any organization. A backup serves as an additional layer of security, enabling data recovery in case of a security incident. Remember that you can also backup your entire Exchange server, data across numerous shared mailboxes, and essentially every application harboring sensitive data across Microsoft 365.

Understanding the Office 365 Public Folder Structure

Office 365 public folders are organized hierarchically, similar to a traditional file system. The Public Folder hierarchy includes:

  1. Root Public Folders: These are the highest-level folders, often serving as top-level categories for organizing data.
  2. Subfolders: Under each root public folder, you can have numerous subfolders, where specific content is stored.
  3. Items: Items within these subfolders can include emails, documents, contacts, or calendar entries.

Migration Strategies for Office 365 Public Folders

When migrating Office 365 public folders, consider the following strategies:

Manual Migration

For small-scale migrations, manually copying data from source to destination may suffice. However, this method is time-consuming and prone to errors. Because of that, businesses can streamline the backup and recovery process and essentially migrate public folders and public folder mailboxes.

Use of PowerShell Scripts

Microsoft provides PowerShell scripts to assist in public folder mailbox migrations. These scripts can automate parts of the process, making it more efficient. However, using PowerShell requires users to have extensive knowledge of a code-based system. So if you don’t know how to migrate multiple Exchange Servers or export public folders data using PowerShell, some of the other strategies are preferred.

Third-Party Migration Tools

When it comes to mitigating potential data loss events with your Public Folders data, many businesses prefer using third-party migration tools as a hands-off approach to data governance. These tools streamline the entire migration process and can migrate mailboxes, Exchange Public Folder data, and more.

These tools are readily available. But the issue becomes choosing the right tool for the task. Moreover, these tools simplify the process, especially for larger-scale migrations. These tools often offer features like scheduling, delta migrations, and reporting.

Hybrid Deployment

In some cases, organizations may opt for a hybrid deployment, which allows them to maintain both on-premises and Office 365 public folders during a gradual migration. Some businesses prefer migrating public folders using third-party tools, but they also prefer manual methods. So hybrid solutions are often the most popular option.

Backing Up Office 365 Public Folders

Backing up public folders mailbox data in Office 365 is a crucial step in ensuring data security and recoverability. Here are some best practices for this process:

  • Regular Backup Schedule: Implement a regular backup schedule to capture changes and updates in public folders.
  • Retention Policies: Define retention policies that align with your organization’s data retention and compliance requirements.
  • Security Measures: Ensure that backups are stored securely, with access restricted to authorized personnel only.
  • Testing and Recovery: Periodically test your backup and recovery processes to ensure that they work as intended.
  • Documentation: Maintain documentation of your backup procedures and regularly update it as your organization evolves.

Wrapping Up

Migrating and backing up Office 365 public folders are critical components of data management and security within the Office 365 ecosystem. By understanding the importance of these processes and employing best practices, organizations can safeguard their valuable data, ensure business continuity, and meet compliance requirements.

Whether you opt for manual methods, PowerShell scripts, or third-party tools, a well-executed migration and backup strategy is an investment in the longevity and resilience of your organization’s data.

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Michael Felton
Backupology

Tech enthusiast, nature lover, father of 3. 10+ years of experience writing for IT blogs.