OneDrive through Microsoft 365 Business is the safer default for most Australian small businesses, while Nextcloud on a NAS is the better choice for teams with strict data sovereignty requirements or high long-term storage volumes. Both platforms let your team sync, share, and collaborate on files. The difference is control: OneDrive is a managed cloud service where Microsoft handles the infrastructure and you pay monthly per user; Nextcloud is open-source software you run on hardware you own, with no per-user fees once the NAS is purchased. For Australian businesses, the trade-off also involves NBN upload speeds, data sovereignty under Australian Privacy Principles, and the real cost of running a NAS versus paying Microsoft month to month. This guide covers what each platform actually costs over three and five years for a small Australian team, and which use cases each genuinely suits.
In short: OneDrive (Microsoft 365 Business Basic) costs $9.00 AUD per user per month and requires zero IT overhead. For a 5-person team, that is $540/year with full Microsoft 365 integration, 1TB storage per user, and no hardware to manage. Nextcloud on a NAS has no per-user fees but requires a NAS investment of $800 to $2,000 upfront, plus drives, plus ongoing electricity and maintenance time. Nextcloud wins on cost for larger teams and longer timeframes, and wins on data sovereignty because your files never leave your building. OneDrive wins on simplicity, mobile experience, and Microsoft 365 integration. If your team already pays for Microsoft 365, OneDrive is already included at no extra cost.
Choose Nextcloud if: you store sensitive client data subject to Australian Privacy Principles; your team has high storage volumes (5TB+) that make per-user cloud fees expensive; you have someone technical who can manage a NAS; or you want full control over where your data lives.
Choose OneDrive if: your team already uses Microsoft 365; you have no dedicated IT person; your team is under 10 people; or you need reliable mobile apps and seamless Office document co-editing.
Nextcloud on a NAS
Nextcloud is open-source file sync and sharing software. You install it on a server or NAS that you own and control. The software itself is free. You pay for hardware, electricity, and your own time. Nextcloud Hub (the current release) includes file sync, document editing via Nextcloud Office (a Collabora-powered LibreOffice integration), Talk (video calls), and Calendar and Contacts sync. For a small business running it on a Synology or QNAP NAS, the practical experience is roughly equivalent to a lightweight Dropbox Business combined with a basic Google Workspace. It is not a full Microsoft 365 replacement, but for teams whose primary need is file access and sharing, it covers the core use case well.
The most common deployment in Australian small businesses is Nextcloud installed on a Synology NAS using Docker or the Synology Package Center. This approach puts your files on hardware in your office, backed by drives you buy and control. Remote access works over HTTPS, either through Synology's QuickConnect relay service or via port forwarding. NBN upload speed is the constraint for remote access: on a standard NBN 100 plan, typical upload is 17 to 20 Mbps. Uploading a 500MB file from the office to a staff member working from home takes around 4 minutes at that speed. For everyday document work this is acceptable; for large media files it is not.
CGNAT (Carrier-Grade NAT) affects some Australian NBN services, particularly with Aussie Broadband, Superloop, and smaller ISPs on congested infrastructure. If your office NBN connection is behind CGNAT, you cannot forward a port to your NAS without a VPN tunnel or a service like Cloudflare Tunnel. This is an important consideration before choosing a self-hosted file sharing solution. Ask your ISP whether your connection has a public IPv4 address.
| Software cost | Free (open-source) |
|---|---|
| Per-user fees | None |
| Hardware required | NAS (see below for AU prices) |
| Minimum NAS for 1-5 users | Synology DS225+ from $538 (Mwave, Scorptec) |
| Recommended NAS for 5-15 users | Synology DS425+ from $785 or QNAP TS-464 from $989 |
| Drives (4TB NAS-grade, per drive) | From approx. $200 AU (Scorptec, PLE) |
| Typical electricity cost (NAS + 2 drives, 24/7) | ~$60-90/year at AU average rates |
| Remote access (no CGNAT) | Port forwarding + HTTPS or QuickConnect |
| Remote access (CGNAT affected) | Cloudflare Tunnel or VPN required |
| Data location | On-premises (your office) |
| Max file sync clients | Unlimited |
| Mobile apps | iOS and Android (free) |
Pros
- No per-user monthly fees. Cost does not scale with headcount
- Data stays in your building. Full sovereignty under Australian Privacy Principles
- No dependency on vendor pricing changes or platform shutdowns
- Storage capacity limited only by drives you buy, not a plan tier
- Nextcloud Hub includes document editing, video calls, calendar, and contacts at no extra cost
- One-time hardware investment pays off in 2-4 years vs equivalent cloud spend
Cons
- Requires hardware purchase ($800 to $2,000+ depending on capacity needs)
- Requires someone to manage updates, backups, and maintenance
- NBN upload speeds limit remote transfer performance for large files
- CGNAT on some AU NBN services blocks direct remote access without a workaround
- No 24/7 vendor support. You are responsible for uptime
- Less polished mobile app experience than OneDrive
- If the NAS fails, file access is down until hardware is repaired or replaced (2-3 week AU warranty process)
Microsoft OneDrive (via Microsoft 365)
OneDrive for Business is Microsoft's cloud file storage and sync service, included in all Microsoft 365 Business plans. For Australian small businesses, the relevant plans are Microsoft 365 Business Basic ($9.00 AUD/user/month), which includes OneDrive with 1TB per user plus web versions of Office apps; and Microsoft 365 Business Standard ($18.60 AUD/user/month), which adds desktop Office installs and Teams. If your team is already paying for Microsoft 365 for email and Office, you have OneDrive included at no additional cost. This is the most important factor in the comparison: for teams already on Microsoft 365, OneDrive is not an additional expense.
OneDrive integrates directly with Word, Excel, and PowerPoint. Real-time co-authoring works across desktop, web, and mobile. Version history (up to 180 days on Business plans) is automatic. File sharing uses the same Microsoft Entra ID (formerly Azure Active Directory) identity your team uses for email, which simplifies access management significantly. For Australian businesses handling sensitive client data, OneDrive and Microsoft 365 store Australian customers' data in Microsoft's Australian data centres (located in New South Wales and Victoria) when the tenant is provisioned for the Australian geo. This addresses data residency requirements for most businesses, though it does not constitute the same level of sovereignty as data stored entirely on-premises.
Microsoft 365 pricing is set in USD and converted to AUD at Microsoft's published rate. The AUD price has shifted upward in recent years as the USD strengthened. For budget planning, factor in that Microsoft can and does adjust AUD pricing, and there is no way to lock in a rate long-term on standard plans.
| Microsoft 365 Business Basic | $9.00 AUD/user/month (OneDrive + web Office) |
|---|---|
| Microsoft 365 Business Standard | $18.60 AUD/user/month (OneDrive + desktop Office + Teams) |
| Storage per user | 1TB (Business Basic and Standard) |
| Additional storage | Microsoft 365 Archive / SharePoint expansion available |
| Hardware required | None (cloud-managed) |
| Data location (AU tenants) | Microsoft Australia data centres (NSW + VIC) |
| Co-authoring | Real-time in Word, Excel, PowerPoint |
| Version history | Up to 180 days on Business plans |
| Mobile apps | iOS and Android. Polished, well-maintained |
| Offline sync | Selective sync via OneDrive desktop client |
| Admin management | Microsoft 365 Admin Centre |
| Support | Microsoft support included (business hours to 24/7 depending on plan) |
Pros
- Included in all Microsoft 365 Business plans at no extra cost
- Zero hardware, zero IT overhead for file sync infrastructure
- Real-time co-authoring on Word, Excel, and PowerPoint. Industry standard
- Polished mobile apps with offline access
- Data stored in Australian data centres for AU-provisioned tenants
- Microsoft handles uptime, backups, security patches, and infrastructure
- Version history (180 days) is automatic, no configuration required
- Ransomware recovery tools built in to Microsoft 365 plans
Cons
- Per-user fee scales with headcount. 20+ users becomes expensive
- Pricing set in USD, AUD cost fluctuates with exchange rate
- Data is on Microsoft's infrastructure, not yours. Not truly on-premises
- Requires Microsoft account and Entra ID for all users
- 1TB per user cap (additional storage costs extra)
- Microsoft can change pricing, plans, or terms with notice
- Advanced compliance and data governance features require higher-tier plans (Microsoft 365 E3 and above)
Side-by-Side Comparison
Nextcloud vs OneDrive: Key Differences for Australian Small Business
| Nextcloud on NAS | Microsoft OneDrive (M365) | |
|---|---|---|
| Monthly cost (5 users) | $0 (after hardware) | $45/month (Business Basic) |
| Monthly cost (20 users) | $0 (after hardware) | $180/month (Business Basic) |
| Hardware cost | $800 to $2,000+ NAS + drives | None |
| 3-year total cost (5 users) | ~$1,400 (NAS + drives + power) | ~$1,620 (M365 Basic) |
| 3-year total cost (20 users) | ~$1,800 (larger NAS + drives + power) | ~$6,480 (M365 Basic) |
| Storage capacity | Limited only by drives you buy | 1TB per user (expandable at cost) |
| Data location | Your office (fully on-premises) | Microsoft AU data centres |
| Data sovereignty | Full on-premises control | Cloud. AU geo, Microsoft terms apply |
| Office document co-editing | Nextcloud Office (Collabora, functional) | Microsoft Office (industry standard) |
| Mobile apps | Good. IOS and Android | Excellent. Best in class |
| Remote access (NBN 100) | 17-20 Mbps upload limit | Not limited by office upload |
| CGNAT impact | Blocks direct access. Workaround needed | No impact |
| IT overhead | Moderate. Updates, backups, maintenance | None. Microsoft managed |
| Ransomware recovery | Nextcloud versioning + manual backup required | Built-in Microsoft 365 recovery tools |
| Vendor dependency | None. Open source, self-hosted | Microsoft pricing and platform changes |
| Setup complexity | Moderate to high. NAS + Docker or package | Low. Microsoft 365 admin centre |
| Support | Community / self-managed | Microsoft business support included |
Five-Year Cost Comparison for an Australian Small Business
Cost comparisons between self-hosted and cloud solutions depend heavily on team size and storage volume. These figures use current AU pricing as a reference point.
5-person team, moderate storage (2-4TB): Microsoft 365 Business Basic at $9.00/user/month = $540/year = $2,700 over 5 years. Nextcloud on a Synology DS225+ from $538 (Mwave, Scorptec) with two 4TB NAS-grade drives at approximately $200 each = $938 hardware plus around $75/year in electricity = roughly $1,313 over 5 years. The self-hosted option is cheaper by around $1,400 over 5 years, but only if someone manages the system without billing for their time. Factor in 2-4 hours per year in maintenance time at any meaningful hourly rate and the cost gap narrows significantly.
20-person team, large storage (10-20TB): Microsoft 365 Business Basic at $9.00/user/month = $2,160/year = $10,800 over 5 years. Nextcloud on a Synology DS925+ from $980 (Mwave, Scorptec) with four 8TB NAS-grade drives at approximately $250 each = $1,980 hardware plus around $120/year in electricity = roughly $2,580 over 5 years. Self-hosted saves approximately $8,200 over 5 years before maintenance time. At this scale, the economics strongly favour self-hosted, and it often justifies hiring a managed services provider to handle the IT work.
The break-even point for most Australian small businesses is roughly 8 to 10 users over 3 years. Below that, OneDrive and Microsoft 365 is generally cheaper or comparable when you include the value of zero IT overhead. Above that, Nextcloud on a NAS pays off materially. Especially if storage requirements are high.
Data Sovereignty and Australian Privacy Principles
The Australian Privacy Act 1988 and the Australian Privacy Principles (APPs) regulate how personal information is handled by businesses with annual turnover above $3 million (with some exceptions for smaller businesses handling sensitive information). For businesses that store client personal information, the location and control of that data matters.
Microsoft stores Australian Microsoft 365 tenant data in their Australian data centres (New South Wales and Victoria) when the tenant is provisioned for the Australian geo. This covers SharePoint, OneDrive, and Exchange data at rest. Microsoft's data handling practices are governed by their privacy commitments and the Microsoft Product Terms. For most Australian businesses subject to the Privacy Act, this arrangement satisfies data residency requirements. For businesses in highly regulated sectors (health, legal, financial services) with specific contractual or regulatory obligations requiring on-premises storage, it may not be sufficient, and professional legal or compliance advice should be sought.
Nextcloud on a NAS in your office means your data does not leave your building. There is no third-party cloud provider with access to your files. This provides the strongest possible data sovereignty position for businesses that require it. The trade-off is that you are responsible for securing that data. Physical security, network security, access controls, and backups are entirely your responsibility.
Privacy Act note: If your business stores personal information about clients, employees, or patients, get specific advice from your legal or compliance adviser about data storage obligations before choosing a platform. This guide provides general information only, not legal advice. For official guidance on the Australian Privacy Principles, visit oaic.gov.au.
NBN Upload Speed Reality for Self-Hosted File Sharing
Australia's NBN architecture creates a specific constraint for self-hosted solutions that does not exist with cloud storage. When a staff member works from home and needs to access a file on the office NAS, the file transfers from your office's NBN connection outbound at the upload speed of your plan. NBN 100 plans typically deliver 17 to 20 Mbps upload in practice. A 100MB work document uploads in under a minute. A 2GB project file takes around 15 minutes. A 10GB video or CAD file takes over an hour.
For teams that work primarily with standard office documents (Word, Excel, PDFs, small images), NBN upload speed is not a meaningful limitation in practice. For teams that regularly transfer large files remotely. Architects, engineers, video producers, medical imaging practices. The NBN upload constraint is a real operational problem that self-hosted file sharing cannot solve. In those cases, OneDrive (or any cloud storage) is the better answer for remote access, because the file is already in the cloud at Microsoft's data centre speed, not being uploaded from your office at 20 Mbps.
NBN Business plans (available from most ISPs) offer higher upload speeds: NBN 250 plans often provide symmetrical upload (250 Mbps), and NBN 1000 plans typically deliver 50 Mbps upload at minimum. If your business relies on remote access to large files, upgrading to a business NBN plan with guaranteed upload speeds addresses the constraint but adds approximately $100 to $200 per month to your internet costs compared to a standard residential NBN 100 plan.
Which NAS Hardware for Nextcloud in Australian Small Business
If you choose Nextcloud, hardware choice depends on team size and workload. The following are all available from Australian retailers including Mwave, Scorptec, and PLE.
1 to 5 users, light document work: The Synology DS225+ ($538, available from Mwave, Scorptec) is a 2-bay NAS with an Intel Celeron J4125 quad-core processor and 2GB RAM (expandable to 6GB). It runs Nextcloud via Docker with reasonable performance for a small team accessing documents. Pair it with two 4TB NAS-grade drives. QNAP's TS-233 ($399, available from Scorptec, PLE) is a budget alternative for very light workloads, though its Realtek processor is less capable under concurrent load.
5 to 15 users, moderate workload with video or image files: The Synology DS425+ ($785, widely available) provides a 4-bay configuration with more storage expansion room. The QNAP TS-464 ($989, available from Scorptec, PLE) offers an Intel Celeron N5095 quad-core with 4GB RAM and M.2 SSD cache slots, which improves Nextcloud responsiveness noticeably for concurrent users. Both are solid choices at this scale.
10 to 30 users with high availability requirements: Consider rack-mount options like the Synology RS822+ ($1,999, available from Mwave, Scorptec) if the NAS lives in a server cabinet. For desktop form factor, the Synology DS1525+ ($1,199) provides 5 bays and more processing headroom. At this scale, deploying Nextcloud professionally with proper backup, UPS protection, and a managed IT provider is worth the investment.
Regardless of hardware, always pair a NAS with an uninterruptible power supply (UPS). Sudden power loss during a write operation can corrupt a NAS volume. A basic UPS from APC or CyberPower costs $150 to $300 from Scorptec or Mwave and protects the full hardware investment. Australian Consumer Law protections apply when purchasing from Australian retailers, but those protections cover the hardware, not your data. A UPS is the practical protection for what actually matters.
Common Mistakes When Choosing Between These Platforms
Mistake 1: Assuming self-hosted means no ongoing cost. Nextcloud on a NAS has no software licence fee, but it has electricity costs, drive replacement costs (NAS-grade drives fail over time), and time costs for maintenance. Budget $100 to $200 per year in operational costs per NAS, plus drive replacements every 3 to 5 years. If maintenance takes 5 hours per year and your time is worth $100/hour, that is $500/year in implicit cost that never appears on an invoice but is real.
Mistake 2: Not checking for CGNAT before deploying self-hosted file sharing. CGNAT blocks direct remote access to your NAS without a workaround. Check with your ISP whether your NBN connection has a public IPv4 address before committing to a self-hosted approach. If you are on CGNAT, you will need Cloudflare Tunnel, a VPS-based WireGuard VPN, or Synology's QuickConnect relay (which introduces a third party into data transfer). Ask your ISP directly: "Does my connection have a dedicated public IPv4 address?"
Mistake 3: Evaluating OneDrive's cost without including what is already paid. If your business already pays for Microsoft 365 Business Basic or Standard for email and Office, OneDrive is already included. The comparison is not OneDrive vs Nextcloud-on-NAS; it is Nextcloud-on-NAS vs $0 marginal cost. In that framing, Nextcloud only makes sense if data sovereignty or storage volume requirements make it worth the hardware investment and IT overhead.
Recommendation by Business Type
There is no single correct answer. The right choice depends on your team's size, technical capability, regulatory context, and existing Microsoft spend.
Professional services (law, accounting, financial advice): Nextcloud on a NAS, provided you have managed IT support. Client files with potentially sensitive personal data benefit from full on-premises sovereignty. The investment in a Synology DS425+ or DS925+ with professional setup pays off in reduced cloud storage fees and demonstrates a clear data governance position to clients. Warranty process note: in Australia, NAS warranty claims go to the retailer, not Synology or QNAP. Standard resolution is 2 to 3 weeks. For a production deployment, buy from a specialist retailer like Scorptec or PLE who can discuss warranty processes upfront, and invest in a hot-spare arrangement if uptime is critical.
Small retail, hospitality, or trade businesses: OneDrive through Microsoft 365 Business Basic. These teams need reliability and simplicity with no IT overhead. The cost is low, mobile access is excellent, and there is nothing to manage. If they already pay for Microsoft 365, OneDrive is free.
Creative agencies and media production: Depends on file sizes. For teams with large video or image files, NAS-based storage is better for local network speed. However, remote access for large files over NBN upload is a real constraint. A hybrid approach works well: Nextcloud on NAS for local and LAN access, with OneDrive or Backblaze B2 for cloud backup and off-site file sharing with clients.
Health practices and allied health: Microsoft 365 Business Standard with OneDrive, or a dedicated health-sector compliant solution. Health information in Australia is subject to the Privacy Act and My Health Records Act. Microsoft's Australian data centre geo covers basic data residency. For practices with specific clinical software requirements, check whether your practice management software integrates with OneDrive or requires a different approach entirely. Seek compliance advice specific to your practice type before deploying any file sharing solution for patient data.
Tech-savvy startups or engineering firms: Nextcloud on a NAS is a strong fit if there is technical staff. The cost savings over 3 to 5 years at 10+ users are material, and the open-source ecosystem is well-supported. A Synology DS925+ or QNAP TS-464 provides solid hardware for this use case.
Related reading: our NAS buyer's guide and our NAS vs cloud storage comparison.
Use our free NAS Sizing Wizard to get a personalised NAS recommendation.
Can Nextcloud replace Microsoft 365 entirely for a small business?
Nextcloud can replace OneDrive as a file sync and sharing platform, and Nextcloud Office provides functional document editing via Collabora (based on LibreOffice). However, Nextcloud does not replace Outlook, Teams, or the Microsoft 365 compliance and security tooling. Most Australian small businesses using Microsoft 365 use it for email (Exchange Online) as much as for files. If your business relies heavily on Outlook, Teams, and real-time co-authoring in the full desktop Office apps, Nextcloud is a supplement to Microsoft 365, not a complete replacement. For businesses that can operate on web-based tools and are not deeply embedded in the Microsoft ecosystem, a combination of Nextcloud on a NAS, Proton Mail or Google Workspace for email, and LibreOffice for documents covers the core workflow at a lower cost.
Is Microsoft OneDrive compliant with Australian data sovereignty requirements?
For most Australian businesses, yes. Microsoft stores data for Australian-provisioned Microsoft 365 tenants in their Australian data centres in New South Wales and Victoria. This covers Exchange Online (email), SharePoint, and OneDrive data at rest. For businesses subject to the Australian Privacy Act's Australian Privacy Principles, this arrangement generally satisfies data residency requirements. For businesses in specific regulated sectors (healthcare under the My Health Records Act, government under Commonwealth data sovereignty policies, or financial services under APRA CPS 234), the requirements may be more specific. The correct answer for your business depends on your regulatory environment, and a compliance adviser or legal professional is the right person to consult rather than a file storage comparison guide.
What happens if my office NAS fails while staff are working remotely?
If your Nextcloud NAS fails, remote file access is down until the hardware is repaired or replaced. In Australia, NAS warranty claims go to the retailer, not the manufacturer. Synology, QNAP, and Asustor do not have service centres in Australia. The standard warranty process runs through the retailer to the distributor (BlueChip for Synology and QNAP, Dicker Data for Asustor) to the vendor in Taiwan, then back. Expect a minimum of 2 to 3 weeks for resolution. Advanced replacements (receiving a replacement before returning the faulty unit) are not officially supported, though some specialist retailers like Scorptec or PLE will discuss informal arrangements. For a production deployment, buy from a specialist retailer, ask about their warranty process upfront, and consider maintaining a cold-spare NAS or a short-term cloud backup that staff can access during an outage. OneDrive does not have this risk because Microsoft's infrastructure is designed for high availability with no dependency on hardware you own.
Can I run Nextcloud on a Synology or QNAP NAS without being technical?
Nextcloud via Docker on a Synology or QNAP NAS requires a moderate level of technical comfort. Synology's Package Center includes a Nextcloud package that simplifies setup somewhat, but configuring HTTPS, remote access (especially if CGNAT is involved), and ongoing updates requires confidence with network and server administration. For businesses without technical staff, engaging a managed IT provider who works with self-hosted infrastructure is the realistic path to a reliable Nextcloud deployment. If no such support is available, OneDrive through Microsoft 365 is the lower-risk choice. A misconfigured Nextcloud installation exposed to the internet without proper HTTPS and access controls creates a security risk for your business data.
What is the real cost of OneDrive for a 10-person Australian small business over three years?
Microsoft 365 Business Basic at $9.00 AUD per user per month for 10 users is $1,080 per year, or $3,240 over three years. Microsoft 365 Business Standard (which includes desktop Office apps and Teams) at $18.60 per user per month for 10 users is $2,232 per year, or $6,696 over three years. These are Microsoft's current published AUD prices, which are set in USD and converted at Microsoft's rate. The AUD cost can change when Microsoft updates their pricing, which has happened several times in recent years as the USD strengthened. Budget for potential price increases of 10 to 20% over a three-year period. For comparison, a Nextcloud deployment for 10 users on a Synology DS925+ ($980) with four 4TB NAS-grade drives ($800 total) plus electricity ($90/year) totals approximately $2,050 over three years before maintenance time, or roughly $1,190 less than Microsoft 365 Business Basic over the same period.
Does Nextcloud work with Microsoft Office files?
Yes. Nextcloud stores and syncs all file types including .docx, .xlsx, and .pptx. The Nextcloud desktop and mobile sync clients work with any file format. For viewing and editing Microsoft Office files, Nextcloud Office (powered by Collabora Online) opens Word, Excel, and PowerPoint documents in the browser with reasonable fidelity for standard documents. Complex formatting, macros, and advanced Excel features may not render correctly. For businesses that need full Microsoft Office compatibility and real-time co-authoring of complex documents, OneDrive with the Microsoft 365 desktop apps is the more reliable choice. Nextcloud integrates well with Microsoft Office if staff use the OneDrive desktop sync client replaced by Nextcloud's own sync client, with Office desktop apps opening files locally.
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