The hardest thing about comparing NAS ownership to cloud subscriptions is that one cost is invisible month to month and the other hits your bank account monthly and never stops. A Synology DS225+ with two 4TB drives costs roughly $650 AUD upfront and looks expensive. Google One at 2TB for $14.99/month looks cheap. At the 2TB tier specifically, five years of Google One ($899) costs slightly less than a NAS ($960) on raw figures. But the NAS still has $200-300 of resale value at year five, which flips the comparison. Above 2TB, where cloud pricing jumps steeply and NAS pricing barely changes, the NAS wins by a significant margin. This article runs the full calculation with current Australian pricing, including electricity, drive replacement reserves, and what you actually get for your money at the end of five years.
In short: For 2TB of storage, a NAS breaks even against Google One in roughly 3.5 years and is significantly cheaper over 5 years. For 4TB+, the crossover happens sooner. Cloud storage wins on upfront cost and zero maintenance burden. NAS wins on total cost over 3+ years, local access speed, privacy, and no per-seat pricing. The decision hinges on how much you store, how long you keep it, and whether upfront cost is a barrier. For most Australian households with more than 1TB of data to manage long-term, a NAS is the better financial decision over a 5-year horizon.
What We're Comparing
This comparison covers three cloud storage tiers that most Australians use for household and small business data:
- Google One: 2TB at $15.49/month (AUD, 2026 pricing). Google's most popular paid tier, covers Google Photos, Drive, and Gmail storage. Shared across up to 5 household members.
- Microsoft OneDrive/Microsoft 365 Family: 1TB per person (up to 6 people, 6TB total) at $179/year ($14.92/month). Includes Microsoft 365 apps. Compared on storage-per-dollar with household use in mind.
- iCloud+: 2TB at $14.99/month (AUD, 2026 pricing). Apple's premium tier, integrated with iOS and macOS devices.
On the NAS side, we compare three common configurations covering 2TB through 16TB usable storage, using current prices from Australian retailers (Mwave, PLE, Scorptec):
- Entry 2-bay: Synology DS225+ (~$528) + 2x 4TB Seagate IronWolf ($180 each) = $709 total. Usable capacity: ~4TB in SHR/RAID1 (2TB mirror) or ~8TB in JBOD. We use 4TB usable (SHR) for a fair comparison.
- Mid-range 2-bay: Synology DS425+ (~$779) + 2x 8TB Seagate IronWolf ($280 each) = $1,109. Usable: ~8TB in SHR.
- Performance 4-bay: Synology DS925+ (~$959) + 4x 4TB Seagate IronWolf ($180 each) = $1,419. Usable: ~12TB in SHR.
NAS 5-Year Cost Breakdown
NAS total cost of ownership includes hardware, drives, electricity, and a reserve for drive replacement. What it does not include: any subscription fees. Once you own the hardware, storage is effectively free until drives fail.
NAS 5-Year Total Cost of Ownership (AUD)
| DS225+ (4TB usable) | DS425+ (8TB usable) | DS925+ (12TB usable) | |
|---|---|---|---|
| Hardware + drives (upfront) | $709 | $1,109 | $1,419 |
| Electricity: 5yr at 15W avg, $0.30/kWh | $197 | $230 | $263 |
| Drive replacement reserve (5yr, 15% annual failure) | $54 | $84 | $108 |
| NAS OS / software | $0 (DSM free) | $0 (DSM free) | $0 (DSM free) |
| Total 5-year cost | ~$960 | ~$1,423 | ~$1,790 |
| Cost per TB per year (usable) | ~$48/TB/yr | ~$36/TB/yr | ~$30/TB/yr |
| Residual value at 5 years | ~$200-300 (resale) | ~$350-450 (resale) | ~$400-600 (resale) |
The drive replacement reserve is calculated conservatively: Seagate IronWolf drives have published annualised failure rates of 0.5-1.5% per drive in real-world data. In a 2-bay RAID1 setup, one drive failure in 5 years is realistic. We reserve $54-108 (50% of one replacement drive's cost) as a 5-year provision.
Electricity at 15W average draw assumes the NAS idles with drives in sleep mode most of the time, with occasional active use. This is realistic for a home NAS used primarily for file storage and occasional streaming. A heavier workload (Plex transcoding, Docker stack) runs warmer. Closer to 20-25W, adding $65-130 to the 5-year electricity cost.
Cloud Storage 5-Year Cost Breakdown
Cloud Storage 5-Year Total Cost (AUD)
| Google One 2TB | iCloud+ 2TB | Microsoft 365 Family (6TB total) | |
|---|---|---|---|
| Monthly cost (AUD, 2026) | $14.99/mo | $14.99/mo | $14.92/mo ($179/yr) |
| Year 1 cost | $179.88 | $179.88 | $179.00 |
| Year 2 cost | $179.88 | $179.88 | $179.00 |
| Year 3 cost | $179.88 | $179.88 | $179.00 |
| Year 4 cost | $179.88 | $179.88 | $179.00 |
| Year 5 cost | $179.88 | $179.88 | $179.00 |
| Total 5-year cost | $899.40 | $899.40 | $895.00 |
| Storage included | 2TB (shared, 5 users) | 2TB (per-account) | 1TB/person up to 6 people |
| Residual value at 5 years | $0 | $0 | $0 |
| What you own at end | Nothing. Cancel = lose access | Nothing | Nothing |
Price risk: Cloud storage subscription prices have increased multiple times in the past 5 years. Google One 2TB was $13.99/month in 2023 and is $14.99/month in mid-2026. A further 10-15% increase over the next 5 years would add $50-80 to the projected 5-year cloud cost. NAS hardware cost does not increase after purchase.
The Crossover Point
At the 2TB tier, the costs are close but cloud comes out slightly ahead on raw figures alone. A DS225+ costs ~$960 over 5 years; Google One at $14.99/month accumulates to $899.40. The NAS is $60 more expensive. Before accounting for the hardware's residual value. At year five, a DS225+ in good condition resells for $200-300, making the effective 5-year NAS cost roughly $660-760. Cheaper than 5 years of cloud. The picture changes significantly above 2TB:
- DS425+ vs Google One (4TB equivalent): Google One does not offer a 4TB tier. You would need 2x 2TB accounts ($30/month) to match the DS425+'s 8TB usable. 5 years of 2x Google One = $1,798. The DS425+ costs ~$1,423. The NAS saves roughly~$779 over 5 years before residual value, with usable storage that's double what the cloud option provides.
- Per-TB comparison: The DS925+ at $30/TB/year significantly undercuts cloud storage at scale. Google One has no 12TB option at any price; you would need multiple accounts or resort to enterprise pricing at several hundred dollars per month.
Break-Even Timeline: NAS vs Cloud (Approximate)
| DS225+ vs Google One 2TB | DS225+ vs iCloud+ 2TB | DS425+ vs 2x Google One 2TB | |
|---|---|---|---|
| NAS total 5-yr cost (raw) | ~$960 | ~$960 | ~$1,423 |
| NAS residual value at yr 5 | ~$200-300 | ~$200-300 | ~$350-450 |
| NAS effective 5-yr cost | ~$660-760 | ~$660-760 | ~$970-1,073 |
| Cloud 5-yr cost | $899 (Google One) | $899 (iCloud+) | $1,798 (2x Google One accounts) |
| Winner at 5 years (raw cost) | Cloud by ~$60 | Cloud by ~$60 | NAS by ~$375 |
| Winner at 5 years (incl. residual) | NAS by ~$140-240 | NAS by ~$140-240 | NAS by ~$725-828 |
At the 2TB tier, cloud storage has a modest raw-cost advantage over 5 years (~$60). But this ignores hardware resale value: a DS225+ sold after 5 years typically recovers$528–$649, swinging the comparison firmly in the NAS's favour. The case for NAS gets substantially stronger above 2TB, where cloud pricing scales steeply and NAS pricing barely moves. And where you also gain local access speed, privacy, and no per-seat fees that cloud cannot match at any price.
What Cloud Storage Gives You That a NAS Doesn't
The cost comparison does not capture everything. Cloud services include things a NAS does not:
- Microsoft 365 Family includes Office apps: Word, Excel, PowerPoint, Outlook for up to 6 users. If your household uses these apps, the $179/year includes their license cost. A standalone Microsoft 365 Personal licence is $109/year. Removing the app cost, you are paying approximately $70/year for the 1TB OneDrive storage. Which makes it harder to beat on pure storage price alone.
- Google One benefits: The 2TB plan includes Google VPN, Google Photos editing features, and priority support. These have real value for some users.
- iCloud integration: iPhone and Mac users get seamless iCloud Photos, iMessage backup, iCloud Drive, and device backups. Replacing all of this with self-hosted alternatives requires significantly more setup and ongoing maintenance.
- Geographic redundancy: Cloud providers replicate data across multiple data centres. A home NAS is a single location. A fire, flood, or theft recovers from cloud backup, not the NAS itself.
- Zero maintenance: No updates to apply, no drives to replace, no Docker stack to debug. The management cost of cloud storage is essentially zero.
What a NAS Gives You That Cloud Storage Doesn't
Beyond the 5-year cost advantage at scale, a NAS provides:
- Local access speed: Transferring 100GB of files from a local NAS takes seconds over gigabit ethernet or minutes over WiFi. The same transfer from cloud storage over NBN takes hours. For large file workflows (video editing, RAW photo processing, music production), local access is not a nice-to-have. It is a requirement.
- No egress fees: Cloud providers charge for data download at scale. Backblaze B2 provides 1GB/day free. AWS S3 charges ~$90 per TB of download. Recovering 2TB from cloud storage carries a recovery cost that NAS does not.
- No per-seat pricing: Adding a sixth household member to Google One requires another account. A NAS adds users with a few clicks at no additional cost.
- Privacy: Files on your NAS are not scanned for policy violations, fed into recommendation algorithms, or subject to account suspension. This matters most for sensitive personal, financial, or business documents.
- Expandability: A 4-bay NAS can grow from 8TB to 32TB by replacing drives. Cloud storage grows only with more monthly spending.
- No subscription risk: Cloud services have been discontinued (Google Drive free storage limits), price-increased, or feature-reduced with little notice. A NAS running today will still run in 5 years regardless of what any cloud provider decides.
Who Should Choose a NAS
The 5-year cost maths favours a NAS for most Australian households, but a few profiles stand out as particularly clear cases:
- Households with 2TB+ of data that will grow: Once you are above the 2TB cloud tier, pricing jumps significantly. A NAS handles 4TB, 8TB, or 20TB at effectively the same monthly cost (just electricity). Cloud does not.
- Home media libraries: Ripped Blu-rays, RAW photo archives, and video projects grow quickly. Local storage for a 10TB media library costs roughly $30/TB/year on a NAS. Cloud storage at that scale costs hundreds per month.
- Small business owners: A NAS serving a team of 3-5 replaces per-seat cloud storage fees that compound quickly. Three users on Microsoft 365 Business costs $540/year. A mid-range NAS serves all three at $230/year electricity cost after the initial hardware investment.
- Privacy-conscious users: Storing financial records, client data, or sensitive personal documents locally removes cloud provider access entirely.
Who Should Stay on Cloud Storage
Cloud storage remains the right choice for some users despite the cost difference at scale:
- Users with under 1TB of data: At low storage volumes, the upfront NAS cost takes too long to amortise. Free tiers (Google 15GB, iCloud 5GB) and low-cost tiers (Google One 100GB at $3.49/month) make cloud cheaper for small volumes.
- iPhone/iPad-primary households: iCloud integration with iOS is deep enough that replacing it with a self-hosted alternative requires significant effort and ongoing maintenance. For Apple households that do not manage large media libraries, iCloud+ at $14.99/month is a reasonable price for the integration value.
- Users who will not maintain hardware: A NAS requires occasional attention. Drive health monitoring, DSM updates, occasional troubleshooting. If no one in the household is willing to do this, the operational advantage disappears.
- Microsoft 365 users who value the apps: If your household relies on Word, Excel, and PowerPoint, the $179/year Microsoft 365 Family plan is hard to beat. You are effectively getting 6TB of cloud storage as an add-on to the app licenses you would buy anyway.
Related reading: our NAS buyer's guide and our NAS vs cloud storage comparison.
Free tools: NAS Sizing Wizard and Cloud vs NAS Cost Calculator — no signup required.
Is a NAS actually cheaper than Google One over 5 years?
At the 2TB tier, the 5-year costs are close. Google One at $14.99/month accumulates to $899 over 5 years, while a DS225+ costs ~$960 all-in. Cloud has a raw-cost edge of about $60. But the NAS retains $200-300 in resale value at year five, making the effective NAS cost $660-760. Cheaper than 5 years of cloud. The real financial case for NAS strengthens significantly above 2TB, where cloud pricing jumps sharply (you'd need multiple Google One accounts with no 4TB+ single tier available). For households with 4TB+ of data, a NAS is substantially cheaper over 5 years on every measure.
What is the cheapest NAS to buy in Australia in 2026?
The entry-level 2-bay NAS options available from Australian retailers in 2026 include the Synology DS225+ (around $349 from Mwave and PLE) and QNAP TS-233 (around $279). Both support 2 drives in RAID1 for data protection. The DS225+ is the more capable option with better Docker support and a more actively maintained OS (DSM 7). Add two 4TB Seagate IronWolf drives (~$180 each) for a complete setup at approximately $709. This is the most cost-effective entry point for a home NAS in the Australian market.
Can a NAS replace iCloud for an iPhone user?
Partially. A NAS with Synology Photos can replace iCloud Photos with some setup effort. File storage works well. However, iCloud's deep iOS integration. IMessage backup, iPhone device backup, keychain sync, and seamless camera roll upload. Cannot be fully replicated by a NAS without third-party apps and ongoing configuration. For iPhone-primary users who use iCloud mainly for device backups and photos, a NAS is a viable partial replacement. For users who rely on iCloud for contacts, calendars, and end-to-end encrypted messaging backups, the replacement path is more complex.
Do I still need cloud backup if I have a NAS?
Yes. A NAS stores your data locally but does not protect against fire, flood, theft, or ransomware that encrypts both the NAS and any local backup. A complete backup strategy follows the 3-2-1 rule: 3 copies of data, 2 different media types, 1 offsite. A NAS is the local copy; a cloud backup service (Backblaze B2, Synology C2) provides the offsite copy. Most Australian NAS users should budget for cloud backup in addition to the NAS hardware cost. Backblaze B2 at 4TB costs roughly AUD $38/month including currency conversion, which adds ~$456/year to the total cost. This changes the break-even analysis but does not eliminate the NAS advantage at scale.
Are NAS drive prices in Australia higher than the US?
Yes, typically 10-25% higher after currency conversion and Australian distribution margins. A 4TB Seagate IronWolf costs approximately AUD $180 from AU retailers (Mwave, PLE, Scorptec) versus roughly USD $90 (AUD $140) in the US. This narrows the NAS cost advantage compared to a US buyer but does not eliminate it. The cloud subscription prices used in this comparison are AUD prices from Australian Google, Apple, and Microsoft storefronts, so the comparison is fair on both sides.
If you've decided a NAS makes financial sense and you're ready to choose a model, the beginner's buying guide covers the most popular Synology and QNAP options available from Australian retailers with current pricing.
Best NAS for Beginners in Australia