Query Regarding SharePoint Online Data Archiving Strategy

Question

Hello Microsoft Team,

Greetings.

We have a Microsoft 365 tenant with approximately 160 Microsoft 365 Business Premium licenses. The customer would like to implement a SharePoint Online archiving strategy where:

• Data from the last 2 years remains available in the active SharePoint site.

Content older than 2 years is automatically moved to an archive storage location.

Archived data should remain accessible for compliance and future retrieval purposes.

The objective is to optimize active SharePoint storage consumption while maintaining access to historical data.

Could you please confirm the following:

Is this scenario supported natively within SharePoint Online or Microsoft 365 Archive?

Can content be archived based on file age (older than 2 years) while keeping recent content active?

What licenses or subscriptions are required to implement this solution?

Is Microsoft 365 Archive the recommended approach, or would a separate SharePoint archive site with automation be required?

Are there any Microsoft-recommended best practices or limitations for this type of implementation?

Could you share the relevant Microsoft documentation and implementation guidance for this scenario?

We would appreciate any architecture recommendations, licensing requirements, and official Microsoft articles that can help us design the solution.

Thank you for your assistance.

Answer 1

Dear @Vinay Shivakoti,

Thank you for posting your question in the Microsoft Q&A forum.

Based on your description, you want to keep only the last 2 years of SharePoint Online data active while automatically archiving older content for compliance and future access. and you want to confirm:

Whether Microsoft 365 Archive supports automatic age-based archiving?

Whether file-level archiving for content older than 2 years is supported?

What licensing or subscriptions are required?

Whether Microsoft recommends Microsoft 365 Archive or a separate archive site with automation for this scenario?

Microsoft 365 Archive can help customers reduce active SharePoint Online storage consumption while still retaining historical data for compliance and future retrieval. However, there are important limitations depending on whether the requirement is site-level or file-level archiving.

Is this scenario supported natively within SharePoint Online or Microsoft 365 Archive?

Yes, Microsoft 365 Archive natively supports archiving inactive SharePoint Online content into a lower-cost archive storage tier while preserving compliance, permissions, metadata, retention policies, and eDiscovery capabilities.

However, the most mature and generally available capability today is: site-level archiving (entire SharePoint sites).

File-level archiving is available, but it is newer and may still require additional governance or automation depending on the exact business requirement.

Can content older than 2 years be archived while keeping recent content active?

Partially yes, Microsoft Purview retention policies can identify content based on: creation date, last modified date, or retention labels.  However, retention policies alone do not automatically move content into lower-cost archive storage. Currently: Site-level archive is fully supported. Native automated file-by-file archival based strictly on age is still evolving and may require: Power Automate, scripts, retention label automation, or third-party governance tooling

What licenses or subscriptions are required?

Your Microsoft 365 Business Premium licenses already include SharePoint Online access.

For Microsoft 365 Archive:

• no separate per-user archive license is required,
• but an Azure subscription with Pay-As-You-Go billing must be configured.

Microsoft documentation currently references:

• Archive storage: approximately $0.05/GB/month
• Standard SharePoint additional storage: approximately $0.20/GB/month

Is Microsoft 365 Archive the recommended approach, or is a separate archive site needed? > it depends on the use case.

Microsoft recommends Microsoft 365 Archive when: complete sites become inactive, projects are finalized, or data no longer requires active collaboration.

A separate archive site with automation may still be needed when: active and historical files coexist in the same site, and only older files should move to archive storage while newer files remain active. In these scenarios, customers commonly use: separate SharePoint archive sites, Power Automate workflows, retention labels, or third-party governance tools.

Are there Microsoft-recommended best practices or limitations?

• Archive inactive sites rather than highly active collaboration sites.
• Review retention policies carefully because retained content can continue consuming SharePoint storage through the Preservation Hold Library.
• Reduce excessive file version history to optimize storage usage.
• Notify site owners before archiving because archived sites become inaccessible until reactivated.
• Use archive features to improve Microsoft 365 Copilot relevance by removing older inactive content from active search scope

*Could you share relevant Microsoft documentation?
*I found some documents relate to information you may need, please refer to these articles as below:

Overview of Microsoft 365 Archive

Set up Microsoft 365 Archive

Manage Microsoft 365 Archive

Pricing model for Microsoft 365 Archive

Common settings for retention policies and retention label policies

Learn about retention for SharePoint and OneDrive

I hope my information meet your expectation, feel free to reach out if you have any other questions.

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Answer 2

Microsoft 365 Archive and SharePoint Online support the overall goal of reducing active storage while retaining historical content, but the context only supports certain aspects of what is being asked.

1. Native support for an archive tier

Microsoft 365 Archive is a native cold-storage tier for SharePoint content:

• Inactive SharePoint data can be moved into a cold storage tier within SharePoint.
• Archived content keeps the same searchability, security, and compliance posture at a lower storage cost.
• When a site is archived, all content in the site (libraries, lists, metadata, permissions) is archived, and the site no longer consumes active SharePoint storage quota.
• Archived content is still discoverable via Microsoft 365 search and Microsoft Purview Content Search/eDiscovery.

This is the recommended native mechanism for reducing active SharePoint storage consumption for inactive content.

2. Granularity of archiving (site vs. file level)

From the context:

• Microsoft 365 Archive is described primarily at the site level: archiving a site moves the entire site into the archive tier and makes it inaccessible to users until reactivated.
• There is also a file reactivation capability: any user with read access to an archived file can reactivate it from SharePoint or OneDrive on the web, with no fee for reactivation.

The context does not describe a built-in policy that automatically moves only files older than a specific age (for example, 2 years) to the archive tier while keeping newer content in the same site active. Instead, it emphasizes:

• Archiving inactive sites to reduce active storage.
• Managing site lifecycle (inactive sites, ownerless sites, etc.) and then using Microsoft 365 Archive for those sites.

3. Lifecycle and storage management best practices

The documented best practices and guidance relevant to this scenario are:

• Use site lifecycle management policies (Inactive site policies, Site ownership policies, Site attestation policies) to:
  • Detect inactive or ownerless sites.
  • Ask owners to confirm necessity and accuracy of site information.
  • Govern which sites should be kept active vs. archived.
• Use Microsoft 365 Archive for inactive SharePoint content:
  • Move inactive sites to the archive tier to reduce active storage costs.
  • Maintain searchability, security, and compliance.
• Use SharePoint storage planning and retention:
  • Configure site storage limits and version history limits.
  • Use retention policies (via Microsoft Purview Data Lifecycle Management) to retain and/or delete content according to compliance requirements.
  • Optimize storage by:
    • Archiving inactive content using Microsoft 365 Archive.
    • Trimming low-value versions.
    • Emptying recycle bins.
    • Using retention settings to automatically delete files after a specified period.
• Use Microsoft Purview instead of older SharePoint information management/records management features for retention and deletion of content.

4. Licensing and subscriptions

The provided context does not specify exact licensing or SKU requirements for Microsoft 365 Archive or for the described scenario. It only notes:

• Microsoft 365 Archive is a cost-effective cold storage tier with lower list price for storage beyond license-allocated quota.
• There is a separate mention of “education pricing for Microsoft 365 Archive,” but no general licensing matrix or requirements.

Because licensing details are not included in the context and licensing questions are out of scope, no licensing confirmation can be provided here.

5. Recommended approach based on context

From the available documentation, the Microsoft-recommended pattern for SharePoint Online data lifecycle and storage optimization is:

• Use SharePoint Advanced Management – Site lifecycle management to:
  • Identify inactive or ownerless sites.
  • Apply governance and ask owners to attest to site necessity.
• For sites determined to be inactive but still needed for compliance or future reference:
  • Archive the entire site using Microsoft 365 Archive.
  • This removes the site from active storage, preserves metadata and permissions, and keeps content discoverable via search and Purview.
• For ongoing storage optimization within active sites:
  • Configure version history limits and trim low-value versions.
  • Use Microsoft Purview retention policies to retain and/or delete content according to regulatory requirements.

The context does not describe a fully supported, native, policy-driven mechanism that:

• Automatically moves only files older than 2 years to Microsoft 365 Archive while keeping newer files in the same site active.

Instead, the documented, recommended approach is:

• Manage site lifecycle and archive whole sites that become inactive.
• Use Purview retention and versioning to manage content age and storage within active sites.

6. Implementation guidance and documentation (from context)

Relevant implementation areas and articles in the context:

• Microsoft 365 Archive overview
  • Conceptual overview of the archive tier, benefits (cost savings, Copilot optimization, lossless metadata, decluttering), and behavior when archiving sites.
• Manage Microsoft 365 Archive
  • How archived sites can be managed (reactivated or deleted) and how file reactivation works.
• Get ready for Microsoft 365 Copilot and agents with SharePoint Advanced Management – Step 2: Site lifecycle management and archiving
  • How to configure site lifecycle management policies (inactive sites, ownership, attestation).
  • How to use Microsoft 365 Archive for inactive content and manage archived sites.
• Best practices for storage management
  • Recommends using Microsoft 365 Archive for inactive SharePoint content.
  • Recommends configuring retention policies and versioning.
• SharePoint storage planning
  • Guidance on setting storage configurations, optimizing storage, and using Microsoft 365 Archive, version trimming, recycle bin cleanup, and retention settings.
• Use Microsoft Purview risk and compliance solutions
  • Recommends using Microsoft Purview Data Lifecycle Management and Records Management instead of older SharePoint information management features for retention/deletion.

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References:

• Overview of Microsoft 365 Archive
• Get ready for Microsoft 365 Copilot and agents with SharePoint Advanced Management
• Best practices for storage management
• SharePoint storage planning
• Use Microsoft Purview risk and compliance solutions instead of the older information management and records management features in SharePoint for Microsoft 365
• Manage Microsoft 365 Archive