The 3-2-1 Backup Strategy for NAS Users (2026): How to Protect Your Data in Australia

A NAS is not a backup. RAID is not a backup. Without a 3-2-1 strategy, a single ransomware attack, fire, or simultaneous drive failure can permanently destroy everything stored on your NAS. The 3-2-1 backup rule is the most widely accepted framework for data protection: 3 copies of your data, on 2 different media types, with 1 copy offsite. This guide implements 3-2-1 specifically for NAS users. Covering Synology Hyper Backup, QNAP HBS 3, cloud provider selection, immutable backups for ransomware protection, and recovery testing. It draws on NAS vendor documentation and real deployment constraints. Australian cloud pricing, NBN upload realities, and recommended AU configurations are in the Australian buyers section below.

For a broader overview of this topic, see our complete home backup guide.

What Is the 3-2-1 Backup Rule?

The 3-2-1 rule was popularised by photographer Peter Krogh in the 2000s and has since become the industry baseline for data protection. It defines three requirements:

• 3 copies of your data. The original plus two backups
• 2 different storage media. For example, internal NAS drives and an external USB drive, or NAS drives and cloud storage
• 1 copy offsite. Physically separate from your primary location, so a fire, flood, or burglary cannot destroy all copies at once

For NAS users, the three copies typically look like this: (1) the live data on your NAS, (2) a local backup to a USB drive or second NAS on the same network, and (3) an offsite backup to the cloud or a physically separate location. This article walks through each layer and how to configure it on Synology and QNAP hardware.

Why RAID Is Not a Backup

This is the most important misconception in NAS ownership. RAID (Redundant Array of Independent Disks) protects against a single drive failure. It does not protect your data against:

• Ransomware: Ransomware encrypts all files visible to the NAS, including all RAID members simultaneously. Every drive in the array gets encrypted at the same time.
• Accidental deletion: If you delete a folder, RAID dutifully removes it across all drives instantly.
• Controller failure: If the NAS itself dies (not the drives), a RAID array may not be readable on a different unit without the same controller chipset.
• Multiple simultaneous drive failures: In a RAID 5 array, a second drive failure during rebuild destroys all data. With 4TB+ drives and rebuild times of 12-24+ hours, this is a real-world risk, not a theoretical one.
• Fire, flood, theft: RAID does nothing to protect against physical destruction of the entire NAS unit.

RAID is about availability, not data protection. It keeps your NAS online when a drive fails. Backup is what keeps your data safe when everything else fails. Our RAID guide explains the full technical picture, but the core message is: RAID is not a substitute for backup, ever.

Snapshots vs Versioned Backups: Understanding the Difference

Two terms that get conflated constantly: snapshots and versioned backups. They solve different problems.

Snapshots are point-in-time captures of the filesystem state. On Synology Btrfs volumes, Snapshot Replication can capture hourly, daily, and weekly states. Snapshots are stored on the same NAS. They are fast to create and fast to restore from. But they live on the same hardware as your data. A NAS fire takes the snapshots with it. Snapshots also cannot help you if the NAS itself fails.

Versioned backups are full or incremental copies of your data written to a separate destination. An external USB drive, a second NAS, or cloud storage. Tools like Synology Hyper Backup and QNAP Hybrid Backup Sync maintain version history at the backup destination, so you can restore a file as it existed 30, 60, or 365 days ago from an independent copy. This is what the offsite copy in 3-2-1 must use.

The practical recommendation: use both. Enable Btrfs snapshots on your NAS for fast, local version recovery. Use Hyper Backup or Hybrid Backup Sync for a separate offsite versioned backup. They complement each other.

Layer 1: Your NAS as Primary Storage

Your NAS is Copy 1 in the 3-2-1 strategy. It holds your live, working data. The version you access day to day. For most home and small business users, this is a 2- or 4-bay NAS running Synology DSM or QNAP QTS. Currently available in Australia:

• Synology DS225+. 2-bay, from $539 at Mwave, PLE, and Scorptec. Good starting point for home users. Supports Hyper Backup and Btrfs snapshots.
• Synology DS925+. 4-bay, from $994. Better for users with growing data sets or who want dual-redundancy with SHR-2. See our best NAS guide for the full 2026 comparison.
• QNAP TS-464. 4-bay, from $989 at Mwave and Scorptec. Strong app ecosystem; HBS 3 backup included.

Enabling snapshots on your NAS adds a versioned safety net within Copy 1. But snapshots stored on the same NAS are not a backup. They protect against accidental deletion and some ransomware variants, but not against hardware failure or physical destruction of the NAS.

Layer 2: Local Backup to USB Drive or Second NAS

Copy 2 in the 3-2-1 strategy should use a different storage medium from your primary NAS drives. The two practical options for home and small business users are a USB hard drive and a second NAS.

USB drive backup: Synology Hyper Backup and QNAP HBS 3 both support USB destinations natively. A 10TB USB drive (Seagate Backup Plus, WD Elements) connected to your NAS keeps a full versioned copy locally. Recovery over USB 3.0 is fast. 200-300 MB/s. Much faster than downloading from the cloud. The limitation: the drive sits in the same physical location as your NAS. Some users rotate two USB drives, keeping one offsite at a workplace or family member's home on a weekly or monthly rotation. That rotation is the simplest way to satisfy the offsite requirement without a cloud subscription.

Second NAS: A second NAS on the same network. Even a cheap 2-bay like the Synology DS223J from $318 at PLE or Mwave. Can receive backups from your primary NAS via Hyper Backup or HBS 3. A second NAS provides deeper version history, faster recovery, and can serve as a standby if the primary fails. For businesses where the NAS is a production device, this is worth the cost. The second NAS should ideally be on a different power circuit (separate UPS) to protect against power surge events.

Layer 3: Offsite Cloud Backup

Copy 3 must be physically separate from your primary location. For most users, cloud storage is the practical answer: it is offsite by definition, accessible from anywhere, and increasingly affordable. For Australian NAS users, three providers stand out for their combination of regional availability, pricing, and NAS software support.

🇦🇺 Australian Buyers: What You Need to Know

Backblaze B2 is the most cost-effective choice for most Australian home and small business NAS users. B2 has a Sydney region (ap-southeast-2), meaning your backup data stays in Australia when you select the correct region at bucket creation. At approximately $8 AUD per TB per month, a 4TB backup set costs around $32/month. Download egress is free up to three times your average monthly stored data. Synology Hyper Backup and QNAP HBS 3 both support B2 via the S3-compatible API. No third-party connector required.

Wasabi also has a Sydney region and is priced at approximately $11 AUD per TB per month with no egress charges at all and no minimum per-request fees. Wasabi requires a minimum 1 TB purchase, making it better suited to users with larger backup sets. It is S3-compatible and works natively with both Synology Hyper Backup and QNAP HBS 3.

AWS S3 (Sydney) is the most expensive option for pure storage but is the right choice if you are already in the AWS ecosystem. The ap-southeast-2 Sydney region provides strong data sovereignty. Egress costs are significant. Approximately $135 AUD per TB transferred out. Which makes test recoveries expensive at scale. For most home NAS users, S3 is overkill. For businesses already running AWS infrastructure, it simplifies the stack.

Synology C2 Backup integrates directly into Hyper Backup as a first-party destination. The limitation for Australian users is data location: Synology's C2 infrastructure has no AU region as of 2026. C2 Backup is priced at subscription tiers (approximately $50 AUD/month for 1TB). Significantly more expensive than B2 or Wasabi. It suits users who want tight Synology ecosystem integration and have small data sets where the premium is acceptable.

NBN Upload Speeds and Cloud Backup: Setting Realistic Expectations

The biggest practical constraint for cloud backup in Australia is NBN upload speed. On a typical NBN 100 plan (FTTC or FTTN), real-world upload speed is approximately 17-20 Mbps. NBN 250 plans improve download speeds significantly but upload on HFC or FTTN connections often caps at 25 Mbps. Only FTTP (fibre to the premises) connections on NBN 1000 plans can reach 50-100 Mbps upload.

At 20 Mbps upload, transferring 1 TB of data to the cloud takes approximately 111 hours. Over 4.5 days of continuous upload. Initial seeding of a large NAS backup set is the primary constraint; ongoing daily incremental backups are much smaller and run comfortably overnight.

Practical advice for Australian NAS users:

• Prioritise what goes offsite: Focus on irreplaceable data. Photos, financial documents, business files. Large video libraries can often be re-downloaded or re-ripped; family photos cannot. Selective backup targets keep seed times and ongoing costs manageable.
• Throttle during business hours: Both Synology Hyper Backup and QNAP HBS 3 support bandwidth throttling schedules. Set full upload speed overnight and throttle to 5-10 Mbps during the day to avoid impacting normal internet use.
• CGNAT does not block outbound backup: Some NBN connections (particularly Fixed Wireless and some FTTN services) are behind CGNAT (Carrier-Grade NAT). This affects inbound remote access to your NAS but does not affect outbound cloud backup. CGNAT only blocks inbound connections. See our remote access and VPN guide for CGNAT workarounds.

Use the NTKIT Backup Calculator to estimate initial seed time and ongoing backup window for your data set and NBN plan's actual upload speed.

Synology Hyper Backup: Setup and Best Practices

Synology Hyper Backup is the primary backup tool for all current Synology NAS devices. It ships with DSM 7 and is available from Package Center at no cost. Hyper Backup supports local destinations (USB drive, network share, rsync to second NAS, Synology C2) and cloud destinations including Backblaze B2, AWS S3, Wasabi, Dropbox, Google Drive, and any S3-compatible service.

To configure Hyper Backup for Backblaze B2 with the Sydney region:

1. Create a B2 account at backblaze.com. Create a new bucket and explicitly set the region to ap-southeast-2 (Sydney).
2. Generate an application key with read/write access to that specific bucket only. Note the Key ID and Application Key.
3. In Synology DSM, open Hyper Backup and click the + icon to create a new backup task. Select S3 Storage as the destination type.
4. In the Server field, enter the B2 S3-compatible endpoint: s3.ap-southeast-2.backblazeb2.com. Enter your Key ID as Access Key and Application Key as Secret Key.
5. Select your bucket, choose the source folders, and enable deduplication and compression to reduce storage costs.
6. Set your backup schedule (nightly at 2am is typical) and configure retention (example: 30 daily versions, 12 monthly versions).
7. Under Bandwidth, set a throttle schedule to avoid impacting daytime internet performance.

Important format note: Hyper Backup stores data in its own proprietary format, not as raw files you can browse in the B2 console. Restoration of individual files requires Hyper Backup Explorer (downloadable from Synology's website). Full NAS restoration: install Hyper Backup on the replacement unit, point it at the same B2 bucket, and use the Restore function. This is why testing recovery matters. Verify the process before you need it.

Synology Hyper Backup: Versioning and Retention

Versioning is what separates Hyper Backup from a simple sync tool. Each scheduled backup creates a new version at the destination. If ransomware encrypts your NAS files on Thursday, you can restore from Wednesday's backup version. Before the encryption event. Without versioning, a sync-based tool would simply overwrite the backup with the encrypted files.

Recommended retention policy for home users: 30 daily versions, 3 monthly versions. This provides 30 days of daily granularity for recent recovery, plus 3 months of monthly snapshots for longer-term issues. For business users: 90 daily versions, 12 monthly versions.

Versioned backups consume more cloud storage than a single copy. A 2TB NAS with 30 daily versions and moderate daily file changes might require 4-6TB of B2 storage depending on how much data changes each day. Use Hyper Backup's storage usage estimator to size your bucket before committing to a retention policy.

QNAP Hybrid Backup Sync 3: Setup and Best Practices

QNAP's equivalent is Hybrid Backup Sync 3 (HBS 3), available on all current QNAP NAS devices running QTS 5 or QuTS hero. HBS 3 covers three distinct functions: Backup (versioned copies to a destination), Sync (two-way folder synchronisation), and Restore. For offsite backup, always use the Backup function. Not Sync. Sync propagates deletions and ransomware encryption to the destination; Backup maintains independent versioned copies.

To configure HBS 3 for Wasabi (Sydney region):

1. Create a Wasabi account at wasabi.com. Create a bucket with region set to ap-southeast-2 (Sydney).
2. Create an access key under the Wasabi console. Save the Access Key ID and Secret Access Key.
3. On your QNAP NAS, open HBS 3 from the App Center. Under Storage Spaces, add a new space and select S3-Compatible.
4. Enter the Wasabi endpoint: s3.ap-southeast-2.wasabisys.com. Enter your access credentials and select the bucket.
5. Create a new Backup job. Select source folders, set the destination to the Wasabi storage space, configure schedule and retention.
6. Set bandwidth throttling to limit daytime upload impact.

HBS 3 stores backups in its own catalog format. Individual file restoration uses the HBS 3 Restore wizard within QTS. Full NAS restoration: install HBS 3 on the replacement QNAP and reconnect to the same Wasabi bucket using the same credentials.

Backup Software Comparison: Synology Hyper Backup vs QNAP HBS 3

Immutable Backups: Ransomware Protection for Your Cloud Copy

Modern ransomware is sophisticated enough to target NAS devices, connected cloud accounts, and backup destinations. If ransomware obtains your NAS credentials, it may attempt to delete or overwrite your cloud backup versions as well as encrypt your live data. The defence is immutable object storage: a setting on your cloud backup bucket that prevents objects from being deleted or overwritten for a defined retention period. Even by the account owner.

Backblaze B2 Object Lock allows you to set a default retention period on bucket objects. Once set, no tool. Including your NAS backup software running with compromised credentials. Can delete or overwrite locked objects within the retention window. This means your backup versions from the past 30, 60, or 90 days are protected regardless of what happens to your NAS or your B2 account password.

To enable on B2: Go to bucket settings in the B2 console, enable Object Lock, and set the default retention mode. Governance mode allows deletion by users with special permissions (an authorised admin bypass). Compliance mode is absolute. Nobody can delete locked objects, not even Backblaze support. Governance mode is recommended for most users: it protects against ransomware while still allowing an authorised admin to clean up old versions manually if needed.

Wasabi Compliance Mode provides equivalent functionality. Set a compliance retention period (30-90 days for most users) when creating the bucket. Once objects are locked, not even Wasabi support can delete them within the retention window. Choose the retention period carefully before enabling. An overly long period will accumulate storage costs.

Recovery Testing: The Most Overlooked Part of Backup

A backup that has never been tested is not a backup. It is a hypothesis. The most common backup failure mode is not silent data corruption; it is discovering during a real emergency that the recovery process fails in ways that were never tested. Testing recovery is the only way to know your backup strategy actually works.

Recommended testing cadence: at least twice per year for home users, quarterly for businesses. What to test:

• Single file restoration: Pick a random file from 30 days ago and restore it using Hyper Backup Explorer (Synology) or HBS 3 Restore (QNAP). Open the file and verify it is intact.
• Folder restoration: Restore a folder of 20-50 files from 60 days ago. Verify file count and that files open correctly.
• Full NAS restoration drill (annual for businesses): On a spare NAS or test device, restore the entire backup from cloud storage and verify critical data is intact. Record the total recovery time. This becomes your known recovery time objective (RTO).

Recovery testing also validates your retention settings. If you expect 90 days of daily versions but only find 30 days in the catalog, that is a configuration error to fix before you need those older versions in a real incident.

Disaster Scenarios: What the 3-2-1 Strategy Covers

Mapping the 3-2-1 strategy against the most common disaster scenarios NAS users encounter:

• Single drive failure: RAID covers this. No backup recovery required. The NAS continues operating on remaining drives while you replace the failed drive and rebuild the array. See our RAID guide for rebuild times and URE risk during rebuild.
• Multiple simultaneous drive failures or NAS hardware failure: Restore from local USB backup (Copy 2) first. USB 3.0 recovery is 200-300 MB/s vs cloud download at NBN speeds. If the local USB is not available, restore from cloud (Copy 3).
• Ransomware: Do not connect any backup media until the NAS has been fully wiped and re-initialised. Restore from cloud backup using a version dated before the infection. Object Lock / Compliance mode ensures the ransomware has not already deleted or overwritten your cloud backup versions.
• Accidental deletion: Restore the deleted file or folder from the local backup (Copy 2) or cloud backup (Copy 3). Versioned backups allow restoration to a point before the deletion occurred.
• Fire, flood, or theft: Both Copy 1 (NAS) and Copy 2 (local USB) are likely destroyed or gone. Restore from cloud backup (Copy 3). Recovery time is governed by your NBN download speed and data volume. Plan for this in advance by knowing how large your backup set is and how long a full restore would take.
• NAS in for warranty repair (2-3 week window): Under Australian Consumer Law, a NAS failure is typically a minor failure. The retailer is entitled to repair or replace the unit on their timeline, not yours. The standard Australian warranty process runs retailer to distributor to vendor in Taiwan and back, with a 2-3 week minimum turnaround. During this period, Copy 2 (local USB) or Copy 3 (cloud) means you can continue accessing data from a temporary device. This is precisely why the second and third copies exist.

What to Back Up. And What to Leave Out

Not all data on your NAS deserves the same backup treatment. Cloud storage costs scale with data volume, and upload speed constraints make backing up everything impractical for large libraries. A sensible tiering strategy:

• Always back up offsite (Copy 3): Personal photos and videos (irreplaceable), financial records, business documents and project files, databases, email archives.
• Local only (Copy 2): Media libraries. Movies, TV, music. These can be re-ripped or re-downloaded if lost. Not worth cloud storage costs.
• No backup needed: Software installers, OS ISOs, recoverable downloads.

Prioritise irreplaceable data. Everything else is a convenience backup.

Recommended Configurations for Australian Buyers

Home User (1-4TB of critical data)

Copy 1: Synology DS225+ (from $539, RAID 1 or SHR) as primary NAS with Btrfs snapshots enabled. Copy 2: 8TB USB hard drive connected to the NAS. Hyper Backup runs nightly at 2am. Rotate a second USB drive to an offsite location monthly for geographic separation. Copy 3: Backblaze B2 (Sydney region) via Hyper Backup. At 4TB backup set, approximately $32 AUD/month. Upload throttle: unlimited overnight, 5 Mbps 8am-10pm. Retention: 30 daily versions, 3 monthly versions. Recovery test: every 6 months. Enable B2 Object Lock (Governance mode, 30-day retention).

Small Business (10-50TB of production data)

Copy 1: Synology DS925+ (from $994) or DS1525+ (from $1,234) with RAID 5 or SHR-2 for dual drive failure tolerance. Btrfs snapshots enabled hourly. Copy 2: Second NAS on the same network. Synology DS423 (from $629 at Mwave, Scorptec) receiving nightly Hyper Backup jobs from the primary. Separate UPS from the primary. Copy 3: Wasabi (Sydney region, ap-southeast-2) for data sets over 1TB. Approximately $110 AUD/month at 10TB backup set. Enable Wasabi Compliance mode (30-day retention). Recovery test: quarterly, including a full folder restore drill. Annual full restoration drill on test hardware. See our NAS vs cloud guide for a full cost-benefit analysis at scale.

The 3-2-1-1-0 Extension: Immutable and Verified

Some security frameworks extend 3-2-1 to 3-2-1-1-0: 3 copies, 2 media types, 1 offsite, 1 immutable or offline copy, and 0 unverified backups (all backups tested). For NAS users, the practical translation is: enable Object Lock / Compliance mode on your cloud backup bucket to create the immutable copy, and run scheduled recovery tests rather than assuming the backup is healthy because the dashboard shows green. This is the standard that enterprise backup strategies use, and it is achievable on home NAS hardware with Backblaze B2 at minimal additional cost.

NAS Power and Backup: Keeping the NAS Running During Backup Windows

For cloud backup to run reliably, your NAS needs to be online during backup windows. Most current Synology and QNAP NAS units support auto power-on and power-off schedules in DSM/QTS settings. Configure the NAS to power on at midnight, complete backup jobs, and power off at 6am. This keeps annual electricity costs low while ensuring nightly backups complete. Our NAS power consumption guide shows typical wattage and annual electricity costs for current models at Australian rates. A Synology DS225+ running a midnight-to-6am schedule costs approximately $10-15 AUD per year in electricity at NSW rates. Negligible compared to the cost of lost data.

If you need the NAS to run 24/7 for file access, backup windows can still be scheduled for off-peak hours while the NAS stays powered on. The key is ensuring backup jobs are not competing with heavy file access at the same time, which would slow both operations.

Related Resources

Building a complete data protection strategy involves decisions beyond backup software configuration. These NTKIT resources cover the related choices:

• Best NAS for Australia (2026). Choosing the right NAS hardware as your primary storage platform
• RAID Explained for NAS Users. Understanding RAID levels, rebuild risk, and why RAID is not a backup
• NAS vs Cloud Storage Australia. Full cost-benefit analysis of self-hosted vs cloud-first storage
• NAS Power Consumption Australia. Electricity cost of running a NAS at Australian rates
• NAS Remote Access and VPN Australia. Accessing your NAS and backup remotely, including CGNAT workarounds
• Where to Buy a NAS in Australia. Specialist retailers, warranty, and support context
• What Is a NAS?. Introduction to NAS for readers new to the category
• Synology NAS Australia Guide. Synology model lineup and DSM feature deep-dive
• Synology vs QNAP Australia. Which ecosystem suits your backup and storage workflow
• Best NAS Hard Drives Australia. Choosing drives that handle the long rebuild times your backup strategy must survive

Related reading: our best NAS for Time Machine and our best UGREEN NAS for home backup.

Use our free RAID Rebuild Risk Calculator to estimate the probability of data loss during a RAID rebuild.

Does RAID count as a backup?

No. RAID protects against drive failure by keeping your NAS operational when one or two drives fail. It does not protect against ransomware, accidental deletion, NAS hardware failure, fire, flood, or theft. All RAID variants store data on drives in the same NAS chassis. Any event that destroys the NAS destroys all RAID members simultaneously. A proper backup is a separate, independent copy of your data on a different device or in a different physical location.

What is the best cloud backup provider for Australian NAS users?

For most Australian home and small business users, Backblaze B2 offers the best combination of price, AU region availability, and NAS software support. B2 costs approximately $8 AUD per TB per month with a Sydney (ap-southeast-2) region for data sovereignty. It integrates with Synology Hyper Backup and QNAP HBS 3 via the S3-compatible API. Wasabi is a strong alternative for data sets over 1TB with zero egress charges. AWS S3 (Sydney) is appropriate for organisations already in the AWS ecosystem but is significantly more expensive for storage and egress costs.

How long does it take to back up a NAS to the cloud on Australian NBN?

On a typical NBN 100 plan with real-world upload of 17-20 Mbps, 1TB of data takes approximately 110-130 hours (4.5-5.5 days) to transfer. Initial seeding of a large NAS can take 1-3 weeks. Ongoing daily incremental backups are much smaller and typically complete overnight. Use the NTKIT Backup Calculator to estimate your specific seed and incremental backup times based on your data set size and NBN plan's actual upload speed.

What is the difference between Synology Hyper Backup and Snapshot Replication?

Hyper Backup creates versioned backup copies at an external destination. USB drive, second NAS, or cloud storage. Snapshot Replication creates point-in-time captures of your NAS volumes stored on the same NAS (or replicated to a second Synology NAS). Snapshots are fast to create and restore but live on the same hardware as your data, so a NAS fire or hardware failure takes them with it. Hyper Backup provides the off-device, offsite copy that satisfies the offsite requirement of the 3-2-1 rule. Use both: snapshots for fast local recovery, Hyper Backup for the protected offsite copy.

Can ransomware delete or encrypt my cloud backup?

Yes, if your cloud backup credentials are compromised. Modern ransomware increasingly targets connected backup accounts to destroy recovery options before encrypting primary data. The defence is immutable object storage: enable Object Lock on Backblaze B2 or Compliance mode on Wasabi. This prevents backup objects from being deleted or overwritten for a set retention period. Even if the attacker has your cloud account credentials. Configure Object Lock in Governance mode (30-90 day retention) as the baseline protection for cloud backup versions.

Is my data stored in Australia if I use Backblaze B2 or Wasabi?

Yes, if you explicitly select the Sydney region when creating your bucket. Backblaze B2 has an ap-southeast-2 (Sydney) region. Wasabi has an ap-southeast-2 (Sydney) region. AWS S3 has an ap-southeast-2 (Sydney) region. All three are US-headquartered companies operating Australian data centres. For data sovereignty requirements, always verify region selection at bucket creation. Services may default to US East. Synology C2 Backup does not have an Australian region as of 2026.

How often should I test my backup recovery?

Home users should test a file restoration at least twice per year. Business users should test quarterly, including at least one full folder recovery to verify completeness. Annual full restoration drills are recommended for production environments. Restore the entire backup on a spare device and confirm all critical data is intact. Recovery testing is the only way to discover silent configuration errors (wrong credentials, full quota, endpoint changes after a DSM update) before they matter in a real emergency.

What happens to my data if my NAS fails and is in for warranty repair?

Under Australian Consumer Law, a NAS failure is a minor failure. The retailer chooses the remedy (repair or replacement) on their timeline, not yours. The standard Australian warranty process runs retailer to distributor to vendor in Taiwan and back, with a 2-3 week minimum turnaround. During this period, your local USB backup (Copy 2) or cloud backup (Copy 3) means you can continue accessing critical data from a temporary device. This is exactly the scenario the second and third copies in 3-2-1 are designed for. Buy from a specialist retailer who can explain their warranty process and discuss advanced replacement options before you need them.

Does QNAP Hybrid Backup Sync work with Backblaze B2?

Yes. QNAP HBS 3 supports Backblaze B2 via the S3-compatible API. When creating a storage space in HBS 3, select S3-Compatible and enter the B2 endpoint for the Sydney region: s3.ap-southeast-2.backblazeb2.com. Use your B2 application key ID and application key as the access credentials. Select your Sydney-region B2 bucket and proceed to create a Backup job. Both backup and file-level restore work via this connection.

Should I back up my entire NAS to the cloud or just critical data?

For most users, backing up only critical and irreplaceable data to cloud storage is the practical choice. Personal photos, financial records, business files, and project work should always be in the offsite cloud backup. Large video libraries (movies, TV shows, files that can be re-ripped or re-downloaded) are better suited to the local USB backup only, avoiding ongoing cloud storage costs and long upload times. Both Hyper Backup and HBS 3 allow per-folder inclusion and exclusion rules. Spend 30 minutes categorising your NAS shares before setting up backup jobs to keep costs and backup windows manageable.

What is the 3-2-1-1-0 backup rule?

The 3-2-1-1-0 rule extends the original 3-2-1 with two additions: a fourth requirement for 1 immutable or offline copy (protecting against ransomware that targets connected backup destinations), and a fifth requirement for 0 unverified backups (all backups must be tested and confirmed to be working). For NAS users, the practical implementation is enabling Object Lock or Compliance mode on your cloud bucket (the immutable copy) and scheduling regular recovery tests rather than assuming the backup is healthy because the NAS dashboard shows no errors.

Is Synology C2 Backup worth using for Australian NAS users?

Synology C2 Backup integrates directly into Hyper Backup as a first-party destination and is simple to set up. However, it has no Australian region as of 2026. Your data is stored in Synology's European or US infrastructure, which is a limitation for data sovereignty-sensitive users. C2 Backup is also significantly more expensive than Backblaze B2 or Wasabi for data sets over a few hundred gigabytes. It is a reasonable choice for users who prioritise ease of setup and have small data sets where the cost premium is acceptable. For anything over 500GB, B2 or Wasabi offers substantially better value with the added benefit of an Australian storage region.