UFSConnect vs OneDrive for Business: Keep Your File Server or Migrate? (2026)

Every IT manager with a Windows file server has had this conversation. Users want to access files from home and on the road. A Microsoft account manager suggests migrating to SharePoint and OneDrive. Someone runs the numbers on the migration project and realises it's going to cost six figures in consulting, permission remapping, and user retraining — for a system that currently works fine.

UFSConnect is the answer for organisations that want to keep their file server and add cloud access on top of it. Install UFSConnect on the Windows file server, point it at the existing SMB shares, and users get a mapped drive letter over HTTPS from wherever they are. NTFS permissions stay intact. Active Directory authentication stays intact. The line-of-business applications that hardcode drive paths keep working.

OneDrive and SharePoint are the right answer if your organisation is genuinely going all-in on Microsoft 365 and wants Teams co-authoring at the centre of how people work. If that's the direction, pay for the migration. If you just want the file server to work from home without a VPN, the migration is paying a lot to get what UFSConnect delivers without it.

Four things that rarely survive the SharePoint transition:

NTFS permissions. Windows file server ACLs are inheritance-based with granular control per group, user, and folder. SharePoint's permission model is different — shared-with lists, site permissions, broken inheritance — and the mapping from NTFS to SharePoint is never 1:1. The typical outcome is an audit exercise that takes weeks and rebuilds the permission model from scratch.

Drive-letter paths. Line-of-business applications that reference `H:\` or `\\fileserver\share` break when content moves to OneDrive sync folders or SharePoint URLs. Fixing them means touching every application that depends on a file path.

Large file and file-count limits. OneDrive caps files at 250 GB each and Microsoft recommends staying under 300,000 files synced per user. For engineering, video, research, and legal teams with large datasets, these ceilings hit fast.

True file locking for non-Office files. OneDrive handles Office co-authoring well. For CAD, video, legal document management systems, and other applications that depend on exclusive file locks, the cloud-sync model creates conflict copies rather than proper locks. UFSConnect honours Windows file locking for every file type.

OneDrive for Business stores your data in Microsoft data centres. Microsoft has AU regions and the data-residency story is legitimate — Australian customer data lives in Australian infrastructure under Microsoft's operational control. For most organisations this is acceptable.

UFSConnect stores nothing of its own. Your files stay on your file server. No data leaves your premises, no third-party holds encryption keys, no cloud provider has administrative access to the content. For organisations with strict data sovereignty or contractual restrictions on where content can reside (government, defence contractors, legal firms with client-confidentiality obligations), this difference is structural.

If your compliance framework permits Microsoft-hosted data in AU regions, OneDrive's AU residency is fine. If your framework requires data to remain on your infrastructure, UFSConnect is the only working answer — OneDrive cannot meet that requirement regardless of region selection.

OneDrive for Business is included in Microsoft 365 Business Standard, E3, and E5 licences, so the licence itself is effectively free if you already have M365. That's the pitch every Microsoft account manager leads with.

What it doesn't include: the migration project. Moving a production file server to SharePoint/OneDrive typically costs between AUD 20,000 and AUD 200,000 depending on data volume, permission complexity, and the number of line-of-business applications that need path updates. Add user retraining, a period of reduced productivity during the cutover, and ongoing administration of the SharePoint permission model.

UFSConnect is a tiered per-user subscription. At the small-site end the per-user rate starts around AUD 29 per user per month; as the user count grows the per-user price drops substantially, so a 100-user deployment lands at a materially lower per-user rate than a 10-user one. Either way, the subscription covers the access layer — the file server, permissions, and applications stay as they are, with no migration project attached.

Choose OneDrive for Business when:

• The organisation is genuinely going all-in on Microsoft 365 and Teams is the primary collaboration surface.
• There is no existing Windows file server (greenfield or planned retirement).
• Office co-authoring is the dominant daily use case.
• SharePoint's permission model is acceptable or preferred.

Choose UFSConnect when:

• You have an existing Windows file server that works and you want to keep it.
• NTFS permissions are complex enough that remapping to SharePoint would be a project.
• Line-of-business applications depend on drive-letter paths or UNC shares.
• Large files (over 250 GB) or large file counts are part of the workload.
• True file locking for non-Office file types is required (CAD, video, legal DMS).
• Data sovereignty requires content to remain on your infrastructure.