Learn how to view the current storage usage and available space for your SharePoint.
Managing storage in Microsoft SharePoint is a critical responsibility for IT administrators and managers. Proactive monitoring of storage usage ensures optimal performance, helps prevent unexpected service interruptions, and keeps costs under control. Whether your organization uses SharePoint Online as part of Microsoft 365 or an on-premises SharePoint Server, understanding how to accurately check storage size is a foundational skill.
This in-depth guide provides a clear, step-by-step walkthrough for checking storage usage in both SharePoint Online and on-premises environments, offering actionable insights and best practices to help you manage your storage effectively. [Hypothetical image: A dashboard screenshot showing SharePoint storage metrics]
Maintaining a close eye on SharePoint storage is more than just a routine check; it's a strategic task that impacts the entire organization.
Prevent Exceeding Service Limits & Costs: SharePoint Online subscriptions come with specific storage allocations. Monitoring usage helps you prevent hitting caps, which can lead to service degradation or necessitate costly upgrades.
Identify Excessive Usage: Quickly pinpoint sites, libraries, or users that are consuming an unusually large amount of space. This is essential for auditing and enforcing governance policies.
Optimize Performance & User Experience: A cluttered or near-capacity SharePoint environment can lead to slower page load times and sluggish file operations, negatively impacting user productivity.
Plan for Future Growth: By tracking storage trends over time, you can accurately forecast future needs and budget for additional storage well in advance.
Ensure Compliance and Governance: Regular storage audits help you identify and manage old or non-compliant data, supporting your organization’s data governance and retention policies.
For SharePoint Online, the primary tool for checking and managing storage is the SharePoint Admin Center. This method is the recommended approach for most administrators.
Log in to the Microsoft 365 Admin Center:
Navigate to admin.microsoft.com.
Sign in with your global administrator or SharePoint administrator credentials.
Access the SharePoint Admin Center:
From the left navigation menu, click Show all to expand the list.
Select SharePoint under the Admin centers section.
View Storage Usage for All Active Sites:
In the SharePoint Admin Center, click on Active sites under the Sites section.
The main table view provides a high-level overview of every active site in your tenant.
Locate the Storage Used (GB) column to see the current storage consumption for each individual site.
You can sort the column to quickly identify the sites with the largest storage footprint. [Hypothetical image alt text: Screenshot of the SharePoint Admin Center showing a list of active sites and their storage usage]
Check Total Tenant Storage and Limits:
The total storage allocated to your organization is displayed on the main page of the SharePoint Admin Center.
You can also navigate to Settings and then Site storage limits to manage and view site quotas.
To understand exactly what is consuming space within a specific site, you can view its Storage Metrics.
From the Active sites list, click on the URL of the site you want to inspect.
In the site details pane that appears, click the Settings tab.
Click "Site storage metrics" to open a detailed report.
This page provides a visual representation of storage usage and lists all the documents, folders, and lists within the site, allowing you to see their individual sizes and pinpoint large files.
For on-premises SharePoint environments, administrators can check storage usage via Central Administration or through PowerShell for a more granular, script-based approach.
Open Central Administration: Access the SharePoint Central Administration website from a server within your SharePoint farm.
Navigate to Site Collection Quotas:
In Central Administration, go to Application Management.
Under the Site Collections section, click on Site collection quotas and locks.
View Storage Usage:
From the dropdown, select the site collection you wish to inspect.
The page will display the current storage usage for that site collection, along with any configured quotas.
PowerShell is an indispensable tool for SharePoint administrators, offering powerful capabilities for reporting on storage usage across multiple site collections.
Open PowerShell as an Administrator:
On a SharePoint server, launch the SharePoint Management Shell as an administrator.
Run the PowerShell Command:
Execute the following command to get a detailed list of all site collections and their storage usage.
Get-SPSite -Limit All | Select-Object Url, @{Name="Storage (MB)"; Expression={$_.Usage.Storage}}Explanation:
Get-SPSite -Limit All: This cmdlet retrieves every site collection in the farm.
Select-Object: This formats the output.
Url: This displays the URL of the site collection.
@{Name="Storage (MB)"; Expression={$_.Usage.Storage}}: This is a calculated property that pulls the storage usage data and displays it in megabytes, making it easy to read.
Effective storage management requires more than just knowing how to check the numbers. Implement these proactive strategies to stay ahead of storage issues.
Implement Site Quotas and Alerts: Set storage limits for individual site collections to prevent single sites from consuming a disproportionate amount of space. Configure alerts to notify site owners when they are approaching their limit.
Leverage Microsoft 365 Retention Policies & Labels: Use built-in governance tools to automatically archive or delete old, unused, or obsolete data. This helps keep sites clean and reduces storage consumption over time.
Regularly Archive or Migrate Inactive Data: For sites or data that are no longer actively used but must be retained, consider archiving them to a long-term storage solution like Azure Blob Storage to free up primary SharePoint space.
Conduct Regular Audits and Reporting: Schedule a recurring task to run PowerShell scripts or check the Admin Center to generate regular storage reports. Share these reports with site owners to promote accountability and encourage clean-up efforts.
Proactive SharePoint storage management is a cornerstone of a healthy and efficient IT infrastructure. By mastering the simple steps to check storage usage in both SharePoint Online and on-premises environments, you gain the visibility needed to prevent issues before they occur. The key is to move beyond reactive checks and implement a strategic plan that includes setting quotas, leveraging governance tools, and regularly auditing your data.
Also refer to Microsoft's official documentation for detailed information on SharePoint storage limits and management.
SharePoint Online provides 1 TB of storage per organization plus 10 GB per licensed user. Additional storage can be purchased if needed.
Delete unused files, optimize file sizes, and use retention policies to automate cleanup.
Yes, by accessing Settings > Storage Metrics in a specific site, you can view library-level usage.
SharePoint Online sends notifications to admins when storage usage approaches the limit.
Yes, in the SharePoint Admin Center, you can set site-level storage quotas under Site Storage Limits.