Both SharePoint and OneDrive store files in Microsoft 365. Both sync to your desktop. Both work inside Microsoft Teams. So why does choosing the wrong one cause so many problems?
Because they're built for fundamentally different purposes, and using one where the other belongs creates file ownership problems, access issues, and data that disappears when people leave.
OneDrive: Your Personal File Space
OneDrive in Microsoft 365 is personal file storage. Files in OneDrive are owned by the individual user account, not by the organization or the team.
What OneDrive is good for:
- Personal drafts and works-in-progress before they're ready to share
- Files you genuinely own and others only occasionally need
- Personal productivity tools: templates, reference docs, notes
- Syncing files to your laptop or phone for offline access
OneDrive supports sharing: you can share any file or folder with specific people or generate a link. But it's still personal storage. The key implication: when a person leaves the organization, IT must decide what to do with everything in their OneDrive. Microsoft gives administrators 30 days (extendable) to act before the content is deleted.
SharePoint: Team and Organizational Content
SharePoint is shared, organizational storage. Files stored in SharePoint are owned by the site (and by extension, the organization), not by any individual user.
What SharePoint is good for:
- Anything multiple people need regular access to
- Project files, departmental resources, company-wide reference documents
- Content with a formal review, approval, or publishing workflow
- Files that need to survive the departure of the people who created them
- Intranet content, policies, procedures, knowledge bases
When a person leaves the organization, files in SharePoint remain fully accessible to all other members of the site. No IT intervention required, no 30-day countdown.
The Hidden Connection: Teams and SharePoint
Every Microsoft Team has a SharePoint site behind it. When you upload a file to a Teams channel, it goes into the SharePoint document library for that Team, in a folder named after the channel.
This means Teams file governance and SharePoint file governance are the same problem. A poorly governed Teams environment creates a sprawl of unmanaged SharePoint sites. A well-governed Teams environment creates a clean, organized SharePoint structure that actually serves the organization.
It also means that when you share a file "in Teams," you're actually sharing from SharePoint. The access controls, retention policies, and sensitivity labels that apply to the SharePoint site apply to that file.
The Ownership Problem
The most common painful mistake: an employee stores their department's critical files in their personal OneDrive instead of a shared SharePoint library.
Everything works fine until they go on extended leave, change roles, or leave the company. Suddenly, the department can't access the files. IT scrambles to retrieve and migrate them. Work stops.
The rule: if anyone other than you needs regular access to a file, it belongs in SharePoint, not OneDrive.
A Practical Decision Framework
| Scenario | Use |
|---|---|
| A draft only you are working on | OneDrive |
| A file you'll share once for review | OneDrive (share link) |
| A project your team collaborates on daily | SharePoint (Teams channel) |
| Department policies and procedures | SharePoint |
| Company-wide reference documents | SharePoint (intranet) |
| Files that need approval workflows | SharePoint |
| Personal templates and productivity tools | OneDrive |
Common Mistakes to Avoid
1. Migrating a file server 1:1 to SharePoint
A file server migration is an opportunity to rethink your information architecture, not just lift-and-shift decades of folder chaos to the cloud. Files that were buried in \\fileserver\shared\depts\finance\archive\2019\ will be just as buried in SharePoint.
Take the time during migration to flatten the folder structure, archive what's genuinely inactive, and organize around how people actually look for information.
2. Giving entire SharePoint sites to individuals
SharePoint permissions should reflect team membership, not individual ownership. Giving one person Owner rights to an entire site creates a single point of failure and often leads to ungoverned external sharing.
3. Creating a new SharePoint site when a Teams channel would do
Not every project needs its own SharePoint site and Team. If the group working on something is a subset of an existing Team, a private or standard channel in that Team is simpler to manage and doesn't add to site sprawl.
4. Ignoring SharePoint permissions governance
The most common SharePoint security debt: permission inheritance broken at folder or file level, creating a patchwork of access that nobody can audit. Govern permissions at the site and library level. Use Entra ID security groups instead of individual user permissions.
Frequently Asked Questions
Should I store my work files in OneDrive or SharePoint?
If you're the only person who needs the file: OneDrive. If anyone else on your team needs regular access: SharePoint (or a Teams channel, which uses SharePoint behind the scenes).
What happens to OneDrive files when someone leaves?
Microsoft notifies the user's manager (if configured) and gives IT 30 days to access, migrate, or download the content before the OneDrive is scheduled for deletion. This window can be extended in the Microsoft 365 admin center.
Can I sync SharePoint files to my desktop like OneDrive?
Yes. The OneDrive sync client handles both OneDrive and SharePoint document library sync. You can sync any SharePoint library you have access to and work with the files offline exactly as you would with personal OneDrive files.
What is the difference between OneDrive and SharePoint in Microsoft Teams?
Files shared in a Teams channel are stored in SharePoint. Files shared in a private 1:1 or group chat in Teams are stored in OneDrive. This is why files shared in chats are harder for IT to govern: they're in individual users' OneDrives, not a shared SharePoint library.