Synology DS923+ vs DS1522+: Which NAS Should You Buy?
Synology’s DS923+ and DS1522+ are compact, business-focused NAS devices designed for file sharing, backups, surveillance, virtualisation, and media management. They use the same DSM operating system and a similar AMD Ryzen platform, so the key decision is less about software and more about bay count, network expansion, and future storage needs.
For Australian homes, home offices, and small businesses, both models can handle shared documents, Time Machine backups, security-camera footage, and private cloud access. The DS923+ is the newer four-bay option, while the DS1522+ provides five bays and four built-in network ports. Your choice should reflect how quickly your data is growing and how much upgrade flexibility you need.
Core Hardware Differences
The DS923+ has four drive bays, an AMD Ryzen R1600 dual-core processor, 4 GB of ECC memory, and two 1GbE ports. It can be expanded to nine drive bays with a DX517 expansion unit and supports an optional 10GbE network adapter. Its compact design suits a household in Brisbane or a small office in Adelaide where desk space is limited.
The DS1522+ uses the same general processor and memory arrangement but includes five drive bays and four 1GbE ports. With two DX517 units, it can reach 15 bays. The extra bay is valuable because it allows more capacity or a safer RAID layout without immediately replacing existing disks.
Both systems support Synology Hybrid RAID, traditional RAID levels, Btrfs volumes, snapshots, user accounts, and encrypted shared folders. They also accept M.2 NVMe drives for cache, although NVMe cache is not a substitute for adding capacity or maintaining backups.
Capacity, Performance, and Expansion
For many Australian households, a DS923+ with four large NAS-rated hard drives is enough for photos, documents, laptops, and a modest Plex or Jellyfin library. It is a sensible fit for an NBN-connected home where several people stream, work remotely, and back up phones overnight.
The DS1522+ makes more sense when the NAS will serve several staff members, store surveillance recordings, or hold large video projects. Four network ports can support link aggregation or separate network connections, although aggregation does not make one individual file transfer four times faster. Both models can use 10GbE, but the rest of the network must also support that speed.
Drive prices and availability vary between Australian retailers, and high-capacity NAS disks can represent a significant part of the total cost. Check compatibility before buying, particularly if you are considering Synology-branded drives, enterprise disks, or a mixture of existing hard drives.
Side-by-Side Specifications
| Feature | Synology DS923+ | Synology DS1522+ |
|---|---|---|
| Drive bays | 4 | 5 |
| Included memory | 4 GB ECC | 4 GB ECC |
| Processor | AMD Ryzen R1600, dual core | AMD Ryzen R1600, dual core |
| Built-in networking | 2 × 1GbE | 4 × 1GbE |
| Optional networking | 10GbE adapter | 10GbE adapter |
| Expansion capacity | Up to 9 bays with DX517 | Up to 15 bays with two DX517 units |
| Best suited to | Homes and small offices | Growing businesses and larger media libraries |
| Main advantage | Compact, newer four-bay design | Extra bay and four network ports |
These specifications make the choice relatively clear. The DS923+ prioritises a smaller footprint and modern four-bay configuration, while the DS1522+ prioritises expansion. A detailed look at both devices and similar models is available in these Synology NAS reviews.
Software and Everyday Use
DSM provides a polished interface for file sharing, Synology Drive, Hyper Backup, Active Backup, Photos, Surveillance Station, and remote access. A family can use separate accounts for private files, while a small business can apply permissions by department and keep shared folders organised.
The software experience is broadly similar on both units, so there is no major application advantage in choosing one model. Performance depends heavily on the number of users, the type of files being accessed, and whether the NAS is handling indexing, Docker containers, virtual machines, or camera recordings at the same time.
A media-focused user could store locally produced audio archives, including material linked to Mandarin radio recordings, while keeping a separate backup elsewhere. Large video libraries will benefit more from extra bays and faster networking than from small differences in processor performance.
Security and Australian Considerations
Remote access should be configured carefully. Use multi-factor authentication, strong unique passwords, automatic updates, restricted administrator accounts, and a VPN where practical. Exposing DSM services directly to the internet is riskier than using a controlled access method such as Tailscale or a properly configured VPN.
Australian businesses handling customer information should consider the Privacy Act 1988 and the Australian Privacy Principles when choosing where data is stored and who can access it. A NAS in a Melbourne office still needs sensible access controls, retention policies, and off-site protection. It should also be placed on a UPS because short outages and power fluctuations can interrupt a rebuild or corrupt active workloads.
For households in Sydney, Perth, or regional areas, NBN upload speeds can make remote backups slow. An initial backup to a locally attached drive may be more practical, followed by scheduled cloud replication. RAID protects availability when a disk fails; it does not protect against theft, ransomware, fire, or accidental deletion.
Choosing the Right Model
Choose the DS923+ if you need a quiet, capable four-bay NAS for home backup, shared files, photos, light media serving, or a small office. It offers enough expansion for many users and leaves room for a 10GbE upgrade when faster transfers become worthwhile.
Choose the DS1522+ if you expect steady data growth, need five disks from the beginning, want four built-in Ethernet ports, or plan to support more demanding business storage. Its additional bay can extend the system’s useful life and make future drive upgrades less disruptive.
For most Australian home users, the DS923+ is the better-value starting point. For a growing business, surveillance-heavy installation, or large media collection, the DS1522+ is the safer long-term purchase. In either case, budget for NAS-rated drives, a UPS, and a separate backup so the storage system remains useful when something goes wrong.