If you're backing up a NAS to the cloud in Australia, you're almost certainly choosing between Backblaze B2, Synology C2, or Wasabi. All three work with the major NAS platforms, support S3-compatible protocols or native integration, and have pricing designed for the multi-terabyte backups that NAS users generate. The differences. Data centre locations, egress fees, per-TB costs, and how tightly they integrate with Synology or QNAP. Determine which one makes sense for your setup and budget.
In short: For Synology users, Synology C2 is the easiest setup with the best DSM integration. For Wasabi's no-egress-fee model, the Sydney region is a significant advantage for Australian users who restore data regularly. B2 is currently cheaper than the monthly C2 OneStorage and Wasabi Pay-Go rates, but C2 OneStorage’s annual 1TB+ rate has a lower monthly equivalent; currencies, tax and billing commitments differ. but US-based. Higher latency and egress costs for restores apply. All three can be used with customer-controlled encryption keys. Hyper Backup supports client-side encryption with an exportable private key, while Backblaze B2 and Wasabi support customer-provided SSE-C keys, subject to client compatibility.
Backblaze B2
Backblaze B2 currently starts at USD $6.95/TB/month, with free egress up to three times average monthly storage and excess egress billed at USD $0.01/GB. In AUD at current exchange rates, B2 storage costs approximately $9-10/TB/month. Backblaze's data centres are US-based (US West primary), which means all backup traffic crosses the Pacific. Relevant for both upload latency and restore costs.
NAS integration: Backblaze B2 supports the S3-compatible API, which means any NAS backup tool with S3 support works. Synology Hyper Backup, QNAP Hybrid Backup Sync, and most open-source backup clients (Duplicati, Rclone) work with B2. There is no native Backblaze package in Synology Package Centre or QNAP App Center. It connects as a generic S3-compatible target.
Restore costs for Australian users: Restoring data from B2 incurs egress charges at USD $0.01/GB (approximately $0.015 AUD/GB). A 1TB restore incurs no B2 egress charge if it remains within the account’s monthly allowance of three times average stored data; egress above that allowance costs USD $0.01/GB. For infrequent full restores, this is manageable. For workflows that regularly pull data back from cloud (media production, frequent disaster recovery tests), egress costs accumulate.
Australian considerations: B2 is US-hosted. Overseas storage can trigger APP 8 obligations and may conflict with particular contracts or specialised data-residency rules, but Australian law does not impose a blanket domestic-storage requirement on all healthcare, legal or accounting records. B2's Cloudflare partnership (Bandwidth Alliance) offers zero-egress-cost access when serving content via Cloudflare's CDN. Not directly relevant to NAS backup but useful for web hosting use cases.
| Storage price | USD $0.006/GB/month (~$9-10 AUD/TB/month) |
|---|---|
| Egress (download) | USD $0.01/GB (~$0.015 AUD/GB) after 1GB/day free |
| Data centre | US West (Sacramento), US East, EU Amsterdam |
| AU data centre | None. US West is closest |
| S3 compatible | Yes |
| NAS native package | No. Connects as generic S3 target |
| Minimum storage | No minimum |
| Free tier | 10GB storage + 1GB/day egress free |
Pros
- Lowest per-GB storage cost of the three services
- S3 API compatibility works with any backup tool
- No minimum commitment or storage fees beyond usage
- 10GB free tier for testing
Cons
- US-based only. High latency for Australian backups and restores
- Egress fees apply for restores (can be significant for large data sets)
- No AU data centre. Data sovereignty concern for regulated industries
- Synology Hyper Backup connects through B2’s S3-compatible endpoint, while Synology Cloud Sync and QNAP HBS 3 expose Backblaze B2 as a selectable provider.
Synology C2
Synology C2 Storage is Synology's own cloud object storage service, designed primarily for use with DSM Hyper Backup and C2 Transfer. It's the easiest cloud backup option for Synology NAS users. Setup takes minutes from within DSM, and Hyper Backup provides versioning, deduplication, and scheduling that integrates directly with the Synology ecosystem.
Pricing (AUD approximate): Synology C2 Storage is subscription-based rather than pure pay-per-use. For new subscribers, C2 Storage is now included in C2 OneStorage. Published reference pricing is USD/EUR 29.99 per year for 300GB, or USD/EUR 7.99/TB monthly and 77.99/TB annually for capacities from 1TB to 200TB, before applicable taxes. (pricing varies by region and promotion, check current pricing at c2.synology.com). There are no egress fees for restores to a Synology NAS. This egress-free model is a significant advantage for users who need to restore regularly.
Data centre (AU context): Synology’s current C2 terms identify its regions as APAC-Taiwan, Europe-Frankfurt and North America-Seattle; current availability should be confirmed during subscription. No Australian C2 region is listed. There is no AU-based C2 region. Singapore adds latency compared to Wasabi's Sydney region, but is closer and faster than US-based alternatives. For most backup/restore workflows, Singapore latency is acceptable.
Limitations: C2 Storage for Hyper Backup requires a Synology NAS. C2 OneStorage also includes the separate S3-compatible C2 Object Storage service; confirm current QNAP compatibility before relying on it as a QNAP backup destination. The subscription pricing model is higher per-TB than B2 for large storage volumes, but the egress-free restores and native DSM integration justify the premium for most home and prosumer Synology users. Australian Consumer Law applies to Synology C2 subscriptions purchased through Australian channels.
| Storage price | Subscription: ~$4.50/mo (100GB) to ~$59/mo (5TB) AUD |
|---|---|
| Egress (download) | Free for restores to Synology NAS |
| Data centre | Singapore (SG), US East, EU Frankfurt |
| AU data centre | None. Singapore is closest |
| NAS integration | Native. Synology DSM Hyper Backup, C2 Transfer |
| S3 compatible | C2 Storage integrates natively with Hyper Backup. S3 compatibility is provided by the separate C2 Object Storage service included with C2 OneStorage. |
| Platform requirement | Synology NAS + Synology Account (free) |
| Free tier | None (trial periods available) |
Pros
- Zero egress fees. Restores from C2 to Synology NAS are free
- Native DSM Hyper Backup integration. Simplest setup of the three
- Versioning, deduplication, and incremental backup built into DSM
- Singapore region is closer than US-based alternatives
Cons
- Synology-only. Not usable with QNAP or other NAS brands
- C2 OneStorage’s annual 1TB+ reference price is currently USD/EUR 77.99 per TB per year, while monthly billing is USD/EUR 7.99 per TB; compare billing term, currency and tax before ranking it against B2 or Wasabi.
- No Australian data centre. SG region still adds latency
- Per-plan storage caps require upgrading plan as your backup grows
Wasabi
Wasabi Pay-Go currently costs USD $7.99/TB/month, subject to a 1TB monthly minimum and its minimum-storage-duration policy. with no egress fees and no API request fees. For Australian users, Wasabi's Sydney (ap-southeast-2) region is a significant advantage. Local storage means fast uploads and restores without cross-Pacific latency. For large NAS libraries that require regular restore testing or media retrieval, the no-egress-fee model makes total cost of ownership significantly lower than B2.
Pricing: At USD $6.99/TB/month, Wasabi is cheaper than Synology C2 at scale and more expensive than B2 on pure storage cost. But the egress calculation reverses this quickly. There is no fixed 700GB break-even point. B2 includes free monthly egress up to three times average storage, so the comparison must account for stored volume, other monthly downloads and Wasabi’s current billing policies. For most NAS users who test restores regularly or run an active media workflow, Wasabi's all-in cost is lower than B2 despite the higher per-TB rate.
NAS integration: Wasabi integrates via S3 API. Synology Hyper Backup, QNAP Hybrid Backup Sync, Rclone, and Duplicati all support Wasabi. Configure the Sydney service endpoint as s3.ap-southeast-2.wasabisys.com. No native package is required.
90-day minimum storage policy: Wasabi charges for a minimum of 90 days of storage even if you delete data earlier. For backup use cases where data is retained long-term anyway, this is not a concern. For short-lived temporary storage or frequent deletion/recreation of backup sets, factor this into the cost calculation.
Australian data sovereignty: Wasabi's Sydney region stores data in Australia. For industries with Australian data residency requirements. Healthcare, legal, government. Wasabi SYD is the strongest choice of the three services.
| Storage price | USD $6.99/TB/month (flat rate) |
|---|---|
| Egress (download) | Free (no egress fees) |
| API requests | Free |
| Data centre (AU) | Sydney (ap-southeast-2). AU data residency |
| S3 compatible | Yes. Full S3 API |
| NAS native package | No. Connects as S3 target |
| Minimum storage period | 90 days minimum charge per object |
| Free tier | None (30-day trial available) |
Pros
- Sydney data centre. AU data residency, lowest latency of the three for Australian users
- No egress fees. Wasabi does not charge a per-GB egress fee, but its free-egress policy expects monthly downloads not to exceed active storage; regularly exceeding that level can lead to service limitation or suspension.
- Full S3 API compatibility with any NAS backup tool
- Flat, predictable pricing. No surprise data transfer bills
Cons
- 90-day minimum storage charge. Less flexible for frequently changing backup sets
- Higher per-TB cost than B2 if you never restore or rarely test
- No native NAS integration. S3 connection only
- No free tier for testing (trial period available)
Cost Comparison: 5TB at 12 Months
Annual Cost Comparison. 5TB Cloud Backup (AUD approximate, includes 1 full restore)
| Backblaze B2 | Synology C2 | Wasabi | |
|---|---|---|---|
| Storage (5TB x 12mo) | ~$660/yr | ~$708/yr (5TB plan) | ~$630/yr |
| Egress (1x full 5TB restore) | ~$75 | $0 | $0 |
| Data centre proximity (AU) | US only (high latency) | Singapore (moderate) | Sydney (low latency) |
| AU data residency | No | No (SG) | Yes (SYD) |
| Total (storage + 1 restore) | ~$735/yr | ~$708/yr | ~$630/yr |
| NAS integration | S3 API only | Native Synology DSM | S3 API only |
| Egress model | Pay per GB | Free to Synology NAS | Always free |
| Best for | Budget, set-and-forget | Synology users, easy setup | AU residency, active restores |
All pricing shown in approximate AUD at 2026 exchange rates. Cloud storage pricing changes. Verify current rates before committing to a service. The Cloud vs NAS Cost Calculator models ongoing storage costs against the cost of on-premises NAS storage for your specific library size and AU electricity rate.
Which Service Should You Choose?
Choose Synology C2 if: You have a Synology NAS, want the simplest possible setup, and value deep DSM integration over cost optimisation. The native Hyper Backup integration, zero egress fees for Synology restores, and reliable support via Synology Account make it the lowest-friction option for most Synology home and prosumer users.
Choose Wasabi if: Australian data residency matters (regulated industries, client contracts), you actively test restores or retrieve data regularly, or you want predictable flat-rate pricing without egress surprises. The Sydney region is the strongest AU advantage here. No provider is categorically the lowest total-cost option for all active users. Compare current storage rates, billing term, B2’s three-times-storage egress allowance, Wasabi’s fair-use and minimum-duration policies, and C2’s current OneStorage pricing.
Choose Backblaze B2 if: You want the lowest per-GB storage cost, you rarely need to restore, and data residency in Australia is not a requirement. B2 is a strong choice for set-and-forget backup of large archives where you never expect to need a full restore. Be aware that a single large restore event can significantly increase the annual cost.
QNAP users: Synology C2 is not an option. Use Wasabi (Sydney region recommended) or Backblaze B2 via QNAP Hybrid Backup Sync S3 integration.
Affiliate note: Backblaze's affiliate program for publishers ended in March 2026. All three services are covered editorially. Service selection should be based on your use case, not promotional links.
Related reading: our NAS buyer's guide, our Synology brand guide, and our Synology vs QNAP comparison.
Free tools: Backup Storage Calculator and NAS Sizing Wizard. No signup required.
Related reading: our 3-2-1 backup guide and our NAS vs cloud storage comparison.
See also: our complete Synology NAS Australia guide.
See also: our full Backup and Disaster Recovery guide.
Does Synology C2 work with QNAP?
No. Synology C2 is designed exclusively for Synology NAS units and DSM applications (Hyper Backup, C2 Transfer). QNAP users should use Wasabi or Backblaze B2 via QNAP Hybrid Backup Sync with S3 protocol.
Is my data stored in Australia with any of these services?
Only Wasabi offers an Australian data centre. Their Sydney (ap-southeast-2) region stores data in Australia. Backblaze B2 has no Australian region. Available account regions are US East, US West, EU Central and Canada East. Synology C2's closest region to Australia is Singapore (SG). Wasabi is the only service in this comparison with an Australian storage region, but whether Australian residency is required-and whether a particular deployment is compliant-depends on the applicable law, data classification, contract and configuration. Obtain specialist advice for regulated data.
What are egress fees and why do they matter?
Egress fees are charges for downloading data out of cloud storage. Backblaze B2 charges approximately USD $0.01/GB for egress. If you restore 1TB from B2, the egress cost alone is approximately $15 AUD. Synology C2 charges no egress for restores to a Synology NAS. Wasabi charges no egress at all. For disaster recovery scenarios where you need to restore large amounts of data, services with no egress fees (C2, Wasabi) have a significantly lower total cost of recovery.
How do I connect Synology Hyper Backup to Wasabi?
In Hyper Backup, create a new backup task and select S3 Storage as the destination. Enter the Wasabi endpoint for your region (ap-southeast-2.wasabisys.com for Sydney), your Wasabi access key ID and secret key, and the bucket name you've created in your Wasabi account. No special configuration is required beyond the S3 endpoint URL. Wasabi is fully S3-compatible.
Is Backblaze B2 still a good option in 2026?
B2 remains a viable option for Australian NAS users who have large archives and rarely need to restore. It's the cheapest per-GB storage of the three. The limitations are US-only data centres (higher latency for AU users), egress fees that can be significant during restores, and no native NAS integration. For set-and-forget backup of cold archives where full restores are very infrequent, B2 is cost-effective. For active backup and restore workflows, Wasabi's Sydney region and zero egress fees make it the stronger AU choice.
What about Synology C2 pricing compared to Wasabi for large libraries?
Synology C2 is subscription-based with storage tiers (100GB, 200GB, 500GB, 1TB, 2TB, 5TB, 10TB). For large libraries (5TB+), Wasabi's per-TB flat rate is typically cheaper than C2's tier pricing. C2's advantage is the native DSM integration and egress-free restores. Which can offset the higher storage cost depending on how often you restore. Use the cost calculator linked above to model your specific library size.
See how cloud backup costs compare against on-premises NAS storage for your library size and AU electricity rate.