For most home users, the best NAS (network-attached storage device) for backup is the one with the best backup software. Not the fastest CPU or most drive bays. A backup NAS runs scheduled jobs, protects against drive failure via RAID (a way of spreading data across drives so it survives a failure), and provides a path to cloud offsite storage. The hardware requirements for this are modest: A modern 2-bay NAS can handle routine home backups, but required memory and performance depend on the backup software, data volume, disks, and number of concurrent jobs. The software matters far more. This guide compares the best 2-bay home backup NAS options across backup application quality, PC agent support, cloud destination options, and AU retail pricing. With clear recommendations by use case.
In short: For a home with 2-5 PCs to back up, the Synology (one of the leading NAS brands) DS225+ is the strongest choice. Hyper Backup and Active Backup for Business are best-in-class. For a simpler 2-drive backup NAS on a tight budget, the QNAP (another established NAS brand) TS-233 is a low-cost option, but the most affordable model depends on live AU pricing. For users open to a newer platform, the Ugreen (a Chinese electronics brand that launched its international NASync series in 2024) DH2300 offers good hardware at a competitive price but less mature backup software.
What Makes a Good Backup NAS?
A home backup NAS should:
- Run automated scheduled backup without manual intervention. Set it and forget it
- Protect against a single drive failure. RAID 1 (2-bay) or RAID 5/6 (4+ bay)
- Back up Windows and Mac PCs. Agent or agentless
- Support offsite cloud backup. Push a copy to Backblaze B2, Synology C2, or similar for offsite protection
- Provide reliable restore. Backup is useless if restore fails. Software with integrity checking and easy restore UI matters
Additional desirable features: Time Machine support for Macs (both Synology and QNAP support this), ransomware protection via immutable snapshots, and email/push notifications on backup success or failure.
Synology DS225+
| CPU | Intel Celeron J4125 quad-core 2.0GHz (burst 2.7GHz) |
|---|---|
| RAM | 2GB DDR4 (expandable to 6GB with Synology's specified 4GB module) |
| Bays | 2 × 3.5"/2.5" SATA |
| Network | 1 × 2.5GbE + 1 × 1GbE |
| M.2 slots | None |
| Key backup apps | Hyper Backup, Active Backup for Business, Snapshot Replication |
| AU Price (approx March 2026) | Check live Australian retailer pricing. |
The DS225+ is the definitive home backup NAS recommendation for most households. Synology's backup software suite is the strongest in the consumer NAS market:
- Hyper Backup: Versioned, encrypted backup to USB, cloud (Backblaze B2, Synology C2, Amazon S3), or remote NAS. Integrity checking, restore wizard
- Active Backup for Business: Centrally managed backup of Windows PCs, with the Active Backup for Business Agent installed on each machine. Also backs up VMware/Hyper-V VMs. Microsoft 365 is protected through the separate Active Backup for Microsoft 365 package. No per-device licence cost
- Time Machine: SMB-based Time Machine destination for Macs. Native macOS backup protocol support
- Snapshot Replication: Btrfs snapshots for fast recovery from accidental deletion or ransomware
The Intel J4125 CPU with 2GB RAM handles all backup tasks comfortably. Synology recommends at least 4GB RAM for optimal Active Backup for Business deduplication performance; actual concurrent workload capacity varies.
QNAP TS-233
| CPU | ARM Cortex-A55 quad-core 2.0GHz |
|---|---|
| RAM | 2GB DDR4 (fixed, not upgradeable) |
| Bays | 2 × 3.5"/2.5" SATA |
| Network | 1 × 1GbE |
| Key backup apps | Hybrid Backup Sync, Qsync |
| AU Price (approx March 2026) | ~$399 |
The TS-233 is QNAP's entry-level 2-bay NAS and a low-cost backup NAS option in this comparison; check live prices before ranking it against the UGREEN DH2300. It is generally priced below the DS225+, but the difference varies with current retailer pricing. and handles basic NAS-to-cloud and PC backup adequately:
- Hybrid Backup Sync: Covers NAS-to-cloud (Backblaze B2, Amazon S3, many others) and NAS-to-NAS replication. Less polished than Hyper Backup but functional for scheduled cloud offsite backup
- NetBak Replicator: Windows desktop backup client that pushes files to the QNAP. More basic than Active Backup for Business. Requires manual agent install on each PC
- Time Machine: Supported on both Synology and QNAP for Mac backup
The TS-233's fixed 2GB ARM RAM and lack of QNAP's business PC backup integration make it weaker than the DS225+ for multi-PC households. But for a single-person or small household just wanting RAID 1 protection with cloud backup of NAS data, it delivers the basics at a lower unit price.
Ugreen DH2300
| CPU | Rockchip RK3576 (8-core, ARM) |
|---|---|
| RAM | 4GB LPDDR4X (fixed) |
| Bays | 2 × 3.5"/2.5" SATA |
| Network | 1 × 1GbE |
| Key backup apps | Sync & Backup |
| AU Price (approx March 2026) | ~$399 |
The Ugreen DH2300 offers impressive hardware for its price. Rockchip RK3576, 4GB LPDDR4X, and 1GbE networking at approximately the same price as the QNAP TS-233. The DH2300 includes more RAM than the TS-233 and DS225+, but its 1GbE networking is slower than the DS225+'s and it uses an ARM Rockchip processor rather than Intel x86. The constraint is software maturity: UGOS Pro is newer than QTS or DSM, and the backup ecosystem is less developed. The UGOS backup tools handle NAS-to-USB and NAS-to-cloud adequately, but lack the depth of Hyper Backup's versioning and integrity checking, and there is no equivalent to Active Backup for Business for PC protection.
The DH2300 is a strong value pick if you primarily want: RAID 1 protection for NAS data, cloud push to a major provider, and good overall NAS performance. For PC backup as a primary requirement, the DS225+ remains superior despite the hardware disadvantage.
Head-to-Head Comparison
Home Backup NAS Comparison
| Synology DS225+ | QNAP TS-233 | Ugreen DH2300 | |
|---|---|---|---|
| AU Price (approx) | $593 (market avg) | $439 | ~$339 |
| CPU / Architecture | Intel J4125 / x86 | ARM Cortex-A55 | Rockchip RK3576 / ARM |
| RAM | 2GB (upgradeable to 6GB) | 2GB fixed | 4GB LPDDR4X (fixed) |
| Network | 1 × 2.5GbE + 1 × 1GbE | 1 × 1GbE | 1 × 1GbE |
| PC backup (agentless) | No. Active Backup for Business requires an agent for PC backup | No. Requires agent install | No |
| Cloud backup | Hyper Backup. Excellent | Hybrid Backup Sync. Good | UGOS Backup. Adequate |
| Mac Time Machine | Yes | Yes | Yes |
| Versioned backup | Yes. Hyper Backup, deep retention | Yes. Hybrid Backup Sync | Basic |
| Snapshot replication | Yes. Btrfs | Yes. QNAP Snapshot Vault | Not established; local Btrfs snapshots are documented |
| Software maturity | Highest | High | Newer, improving |
| Best for | Multi-PC households, best backup software | Budget NAS-only backup | Performance at entry price, simpler use |
Prices last verified: 31 March 2026. Always check retailer before purchasing.
🇦🇺 Australian Buyers: Where to Buy and Warranty
AU retail availability (March 2026):
- Synology DS225+: Available at Scorptec, PLE, Mwave, Umart, Computer Alliance. 3-year warranty. Local Synology AU support presence
- QNAP TS-233: Available at major AU retailers. 2-year standard warranty. QNAP warranty handled via AU distributors
- Ugreen DH2300: Available direct from Ugreen AU online store and select retailers. Warranty through Ugreen AU
Use StaticICE.com.au to compare live pricing across retailers for Synology and QNAP. For consumer purchases from businesses supplying these products in Australia, Australian Consumer Law guarantees apply in addition to stated warranty periods. Buy from major AU retailers for the most straightforward warranty service path.
See the best NAS Australia guide for a broader model comparison, or the 3-2-1 backup strategy guide for how to structure your backup approach regardless of which NAS you choose.
Related reading: our 3-2-1 backup guide.
Use our free NAS Sizing Wizard to get a personalised NAS recommendation.
Found the right NAS for your home backup? Our expert build review checks your full configuration. Drive selection and backup strategy. Before you spend. $149 AUD, delivered within 3 business days.
See also: our complete UGREEN NAS Australia guide.
See also: our complete Synology NAS Australia guide.
See also: our complete QNAP NAS Australia guide.
See also: our full Backup and Disaster Recovery guide.
Do I need a NAS for home backup if I use cloud storage?
Cloud storage alone is not a complete backup strategy. It is one copy stored offsite. A NAS adds: a local copy for fast restore (restoring 1TB can take hours or longer, depending on internet and provider limits, local network speed, storage performance, and workload), a backup of supported workloads that expose data through a compatible agent, file share, or vendor integration, such as supported server VMs, and control over your data without ongoing storage subscription costs. The ideal home backup combines a NAS for local backup with cloud for offsite. The 3-2-1 model. For households with modest data volumes and acceptable restore times, a cloud backup service may be sufficient depending on cost, bandwidth, retention, versioning, and recovery needs. For larger or more complex environments, a NAS adds meaningful protection.
How many drives do I need for a backup NAS?
A 2-bay NAS in RAID 1 may be sufficient when one drive's usable capacity and single-drive fault tolerance meet the household's requirements. RAID 1 mirrors two drives. If one fails, your data is intact on the second. The trade-off is capacity: you use only half your raw storage (2 × 4TB = 4TB usable in RAID 1). For more capacity with redundancy, a 4-bay NAS in RAID 5 is more efficient (3 drives usable from 4). For a primary backup NAS that is itself the important copy, 2-bay RAID 1 is the pragmatic minimum.
What hard drives should I buy for a backup NAS?
NAS-rated CMR drives: Seagate IronWolf or WD Red Plus. Avoid drive-managed SMR models for NAS RAID; verify the exact model and capacity because the BarraCuda and WD Blue families contain different recording technologies. Drive-managed SMR can reduce RAID rebuild performance; prefer compatible CMR NAS drives and verify the exact model. For a home backup NAS, the best cost per GB varies by drive model, capacity, and current AU promotions; compare live prices before buying. See the NAS hard drive guide for current AU pricing and model recommendations.
Can a NAS back up my iPhone or Android phone?
Yes. Synology and QNAP both provide mobile apps (Synology Photos and Qfile Pro) with automatic photo and video upload from iPhone and Android. The apps support automatic uploads, but background behaviour depends on the mobile operating system and settings; large transfers may require a focused or foreground transfer mode. This is separate from PC backup. The mobile apps handle supported photo and video uploads directly. For Android specifically, see the Android photo backup guide for setup steps on both platforms.
Is a backup NAS the same as a NAS RAID?
No. RAID is not a backup. RAID protects against a single drive hardware failure but does not protect against accidental deletion, ransomware, fire/theft, software corruption, or controller failure. A backup NAS is a NAS that runs backup software copying your data to a separate destination (cloud, USB drive, second NAS). RAID on the backup NAS protects the backup storage itself from drive failure. It is one layer of protection, not a replacement for actual backup jobs to separate destinations.
Calculating how much storage your backup NAS needs? The Backup Storage Calculator estimates total required capacity based on your data size, retention period, and change rate.