What is Microsoft OneDrive and how does it work for SMBs?
by Jon Lober | NOC Technology
Updated March 2026: This guide has been refreshed with current OneDrive features, storage options, and important clarifications about what OneDrive does—and doesn't—protect against. Jump to 2026 updates.
Microsoft OneDrive. A primer for small business.
Most of Microsoft’s products are instantly familiar, regardless of the last time that you used one. Although Windows, Word, Excel, and Outlook have all improved substantially over the past twenty years, someone who has not used one of the programs since Y2K would not be lost if they were to suddenly return to the latest Microsoft Office version.
That is, until they go to save their document.
For many small business owners and employees, Microsoft OneDrive has become an irreplaceable part of their workflow. For many others, it remains a baffling option that lives in their File Explorer—only raising its head when they go to save a document.
SMEs that use Microsoft’s business software and platform have much to gain by embracing the OneDrive, but it is hard to embrace what you do not understand.
What is Microsoft OneDrive?
OneDrive is Microsoft’s cloud service solution for individuals, businesses, schools, and organizations that want to store their data remotely. Cloud services like OneDrive allow organizations to store their information in a centralized location that anyone (with permission) can access from anywhere. (Click to learn more from NOC about what the cloud is and how it works.)
Microsoft launched its first cloud storage system in 2007. Over the past sixteen years, that product has evolved into an entire family of cloud-hosted offerings that includes OneDrive, SharePoint, and Microsoft 365. Most SMB owners and employees know OneDrive in its business-focused form—"OneDrive for work or school.” Formerly known as “OneDrive for Business,” some users may still encounter OneDrive under this name.
What can you do with OneDrive?
OneDrive allows users to sync, store, and backup their files in the Microsoft cloud.
For most SMEs, cloud storage is more flexible, has greater capacity, and provides greater data security compared to locally-stored files. OneDrive also allows everyone on a team to work on the same files, from the same folder. Users that combine OneDrive with Microsoft 365 can even collaborate on the same document in real time. This eliminates the need for multiple versions of a document or frustrating duplicated efforts.
Most users interact with OneDrive in their File Explorer, where it appears as an option in the left-hand navigation pane.
In File Explorer, you can drag and drop files into OneDrive or open a file just like with any other folder. If you are working on a document in any Office program, OneDrive appears as an option under “Save As” along with other familiar, locally-available locations. (Click to learn how to save and share Microsoft Office Files in One Drive.)
Any file that you save, delete, or modify in a OneDrive folder has that change automatically echoed in the cloud, a process known as “syncing.” However, in order to access those files, users must be connected to the internet. This saves space on a user’s computer. (Users that want to be able to access their files offline can also configure OneDrive to allow offline access.)
OneDrive also provides backup options to users, which means that OneDrive can automatically store a copy of selected folders (or your entire computer) on an ongoing basis. Robust backup is extremely important for small businesses, since it can eliminate the risk of data loss associated with damaged, lost, or stolen computers.
When you save a file to OneDrive, where are you saving it?
When you save a Microsoft Office file (or any other file) to OneDrive, that data is stored on a remote server, which your computer accesses through an internet connection. Unlike the other files on your desktop and hard drive (known as local files), OneDrive files are physically stored in a separate geographic location.
Specifically, Microsoft stores all OneDrive and SharePoint files in one of its 160 Azure data centers, which are separated into
60 geographic regions around the world. Most users
in the United States will have their data stored in one the ten Microsoft Azure data centers located in Iowa, Virginia, Georgia, Illinois, Texas, Wyoming, California, Washington, Arizona, or (soon) Georgia. Although the physical location of the data center does not matter to many small business owners, some may need to know in order to comply with data security or data residency regulations.
In order to protect users , OneDrive always saves two copies of every file—one primary and one secondary—in two distinct geographic regions, providing an additional layer of backup. This protocol prevents accidental data loss that could caused by a catastrophic event at a data center, such as a fire, earthquake, hurricane, or other natural disaster.
What OneDrive Doesn't Do: Backup Limitations You Should Know
OneDrive is excellent for syncing and collaboration. But many small business owners mistakenly believe OneDrive is a complete backup solution. It isn't.
Here's what OneDrive sync doesn't protect you from:
Ransomware propagation. If ransomware encrypts files on your computer, OneDrive dutifully syncs those encrypted files to the cloud. Your "backup" becomes encrypted too. While OneDrive does offer version history (up to 30 days on most business plans), recovering hundreds or thousands of files individually is a nightmare.
Accidental deletion beyond the retention window. Delete a file? It goes to the recycle bin for 93 days, then it's gone forever. If you don't notice a missing file within that window, OneDrive can't help you.
Intentional deletion by departing employees. When an employee leaves (especially on bad terms), they can delete their OneDrive contents. You have a limited window to recover that data before it's permanently lost.
Account compromise. If someone gains access to a user's Microsoft 365 account, they can delete, exfiltrate, or encrypt everything that user has access to—including shared folders.
Compliance and legal holds. Standard OneDrive retention doesn't meet the requirements for many regulatory frameworks (HIPAA, legal discovery, SEC record-keeping). You may need additional data protection.
The bottom line
OneDrive is a sync and collaboration tool, not a true backup. Microsoft's own Shared Responsibility Model makes this clear: Microsoft protects the infrastructure, but protecting your data is your responsibility.
For true business continuity, most SMBs need a dedicated third-party backup solution that provides:
- Independent copies outside of Microsoft's ecosystem
- Longer retention periods
- Point-in-time recovery
- Protection against account compromise
Related reading: Does Microsoft Backup Your OneDrive?
Frequently Asked Questions About OneDrive for Business
Is OneDrive free for business use?
OneDrive comes included with most Microsoft 365 business subscriptions. Microsoft 365 Business Basic ($6/user/month) includes 1 TB of OneDrive storage per user. Standalone OneDrive for Business plans start at $5/user/month. There's no completely free version for business use-the free 5 GB personal tier isn't licensed for commercial purposes.
What's the difference between OneDrive and SharePoint?
OneDrive is personal cloud storage tied to an individual user account. SharePoint is team-based storage tied to groups, departments, or the entire organization. In practice, when you share a OneDrive folder with your team, it often gets moved to SharePoint behind the scenes. Think of OneDrive as "my files" and SharePoint as "our files."
Can OneDrive replace our file server?
For many small businesses, yes. OneDrive and SharePoint together can replace traditional file servers, eliminating hardware maintenance and enabling remote access. However, some businesses with specialized applications, very large files, or strict compliance requirements may still need on-premises storage. A hybrid approach is also common.
Is OneDrive secure enough for sensitive business data?
OneDrive uses strong encryption (AES 256-bit at rest, TLS in transit) and benefits from Microsoft's enterprise security infrastructure. For most SMBs, it's more secure than a file server in a closet. However, security ultimately depends on your configuration-proper access controls, MFA enforcement, and monitoring matter more than the platform itself.
Does OneDrive work offline?
Yes. You can mark files or folders as "Always keep on this device" to access them without internet. Changes sync automatically when you reconnect. This is especially useful for laptop users who travel or work from locations with unreliable internet.
How long does OneDrive keep deleted files?
Deleted files go to the OneDrive recycle bin for 93 days, then to a second-stage recycle bin (admin-accessible) for another 93 days in some configurations. After that, they're permanently deleted. For longer retention, you need Microsoft 365's retention policies or a third-party backup solution.
Can OneDrive protect us from ransomware?
Partially. OneDrive's version history lets you restore previous versions of files (up to 30 days on business plans). Microsoft 365 also includes ransomware detection that can alert you to suspicious activity. However, if ransomware encrypts files and you don't notice within the retention window, recovery becomes difficult. A
dedicated backup solution provides stronger protection.
