Maximising SharePoint Storage for Businesses Understanding Microsoft 365 Plans E3 E5 Differences

SharePoint storage is a critical resource for businesses using Microsoft 365. As companies grow and collaborate more digitally, managing storage efficiently becomes essential to avoid unexpected costs and maintain smooth operations. This post explains how SharePoint storage works, how it varies across Microsoft 365 plans, and practical ways to make the most of your storage without overspending.

How SharePoint Storage Works in Microsoft 365

SharePoint storage is the space allocated for storing files, documents, and data within your organisation’s SharePoint sites. It is shared across all users and sites under your Microsoft 365 subscription.

Microsoft calculates SharePoint storage based on two main factors:

• Base storage: Every tenant receives a fixed amount of storage, typically 1 TB.

• User-based storage: Additional storage is added depending on the number of licensed users. For example, each user might add 10 GB of storage.

  
  

This means the total SharePoint storage equals the base storage plus the extra storage from all active users.

How User Numbers and Licence Types Affect Storage

The number of users directly impacts your available SharePoint storage. More users mean more storage, but only if those users have the right licences.

Licence types also influence storage:

• Business plans (such as Microsoft 365 Business Basic, Standard, and Premium) generally offer a base storage plus a smaller per-user storage allocation.

• Enterprise plans like E3 and E5 provide larger per-user storage allowances and additional features that support bigger organisations and more complex needs.

  
  

For example, a business with 50 users on a Business Premium plan might get 1 TB base plus 500 GB (50 users x 10 GB), while the same number of users on an E3 plan could receive more storage per user and extra capabilities.

Differences Between Business Plans and E3/E5 Plans

Microsoft 365 Business plans are designed for small to medium-sized businesses. They include essential tools and moderate storage suitable for everyday collaboration.

Enterprise plans like E3 and E5 target larger organisations with advanced security, compliance, and analytics features. They also offer:

• Higher SharePoint storage limits per user.

• Access to additional services such as advanced threat protection (E5).

• More comprehensive compliance tools.

• Greater control over data governance.

  
  

While Business plans focus on cost-effectiveness and simplicity, E3 and E5 plans provide scalability and enhanced capabilities for organisations with complex requirements.

SharePoint storage infrastructure in a data centre

Practical Tips to Maximise SharePoint Storage

Managing SharePoint storage well can save money and improve efficiency. Here are some practical tips:

• Review user licences regularly: Remove licences from inactive users to free up storage allocation.

• Archive old or unused files: Move outdated documents to offline storage or cheaper cloud options.

• Use retention policies wisely: Set clear rules for how long files are kept to avoid unnecessary storage growth.

• Choose the right licence for your needs: Don’t pay for enterprise features if a Business plan covers your requirements.

• Educate users on storage limits: Encourage teams to delete duplicates and avoid storing large files unnecessarily.

• Monitor storage usage: Use Microsoft 365 admin tools to track storage trends and plan upgrades proactively.

  
  

Common Misunderstandings About Storage Limits

Many businesses assume SharePoint storage is unlimited or that all plans offer the same capacity. This leads to surprises when storage runs out or costs increase.

Another common mistake is not accounting for storage used by OneDrive or Teams, which also consume Microsoft 365 storage quotas.

Some organisations expect that upgrading licences automatically increases storage without checking the specific plan details.

Understanding these nuances helps avoid unexpected limits and ensures storage is aligned with actual business needs.

Maximising SharePoint storage requires a clear understanding of how Microsoft 365 plans work and active management of users and data. By choosing the right licences and applying good storage practices, businesses can keep costs down and maintain smooth collaboration.