Overview
Measuring just 306.6 mm in chassis depth, this 2U rackmount storage server integrates cleanly into space-constrained two-post telecom racks and shallow wall-mount cabinets without requiring extended server rails. The front fascia accommodates eight hot-swappable 3.5-inch/2.5-inch SATA drive trays, while the internal layout routes airflow directly across an AMD Ryzen V1500B quad-core processor clocked at 2.2 GHz. By integrating two internal M.2 2280 NVMe SSD slots directly onto the mainboard, the architecture provides dedicated high-speed caching without cannibalizing any of the primary front-facing storage bays.
Thermal dissipation relies on dual 80 mm exhaust fans positioned at the rear of the rigid steel chassis, maintaining operational temperatures within a rated 0°C to 35°C envelope. Power delivery is managed via an internal 250W single power supply unit accepting 100V to 240V AC input. For network I/O, the unit steps up from legacy Gigabit standards by providing dual 2.5GbE RJ-45 ports with link aggregation support out of the box. Additional bandwidth requirements can be addressed through a PCIe Gen3 x8 expansion slot—electrically wired for x4 throughput—which accommodates optional 10GbE/25GbE network interface cards or Fibre Channel adapters.
System administration operates on Synology DiskStation Manager (DSM), delivering automated storage pooling, snapshot replication, and AES-NI hardware encryption. However, operational flexibility is governed by strict hardware validation policies: Synology enforces mandatory drive compatibility lists, and expanding past the base 4 GB DDR4 ECC memory with non-Synology modules restricts technical support coverage. Furthermore, memory expansion up to 32 GB across its two SODIMM slots is strictly required to provision single storage volumes beyond 108 TB, up to the maximum 200 TB threshold. Expanding raw storage scale is supported externally by attaching an RX426 four-bay expansion enclosure over the rear USB-C port, bringing the total addressable pool to 12 bays.
Technical Specifications
| Brand | Synology |
| Model | RackStation RS1226+ |
| Form Factor | 2U Rackmount (Short-Depth) |
| Dimensions | 88 mm x 482 mm x 306.6 mm |
| Weight | 6.8 kg |
| Processor | AMD Ryzen V1500B (4 cores, 8 threads @ 2.2 GHz) |
| Hardware Encryption Engine | AES-NI |
| Preinstalled Memory | 4 GB DDR4 ECC SODIMM (1 x 4 GB) |
| Memory Expansion | 2 x SODIMM slots (Up to 32 GB, 2 x 16 GB) |
| Primary Drive Bays | 8 x 3.5" / 2.5" SATA (Hot-swappable) |
| Maximum Drive Capacity With Expansion | 12 bays (via Synology RX426 unit) |
| M.2 Cache Slots | 2 x M.2 2280 NVMe SSD |
| Network Ports | 2 x 2.5GbE RJ-45 |
| PCIe Expansion | 1 x PCIe Gen3 x8 mechanical slot (x4 electrical link) |
| USB Connectivity | 2 x USB 3.2 Gen 1 Type-A, 1 x USB Type-C (Expansion Port) |
| Cooling Fans | 2 x 80 mm x 80 mm |
| Power Supply Unit | Single 250W internal PSU (100V to 240V AC, 50/60 Hz) |
| Operating Temperature Range | 0°C to 35°C |
| Operating Humidity Range | 8% to 80% RH |
| Maximum Single Volume Size | 108 TB (Expandable to 200 TB with 32 GB RAM) |
- Compact 306.6 mm chassis depth enables seamless integration into shallow two-post and wall-mount equipment racks
- Dual native 2.5GbE interfaces deliver immediate multi-gigabit network throughput out of the box
- Dedicated dual M.2 2280 NVMe SSD slots enable high-speed read/write caching without consuming front drive bays
- Scalable up to 12 total drive bays through an RX426 expansion enclosure over USB-C
- Strict vendor compatibility policies enforce drive qualification and restrict technical support on third-party RAM
- Base configuration includes only 4 GB RAM, requiring an expansion to 32 GB to create single storage volumes above 108 TB
- Single 250W power supply lacks redundant PSU capabilities for high-availability enterprise environments
Primary Sources & Audited Citations
Recommended Alternatives in Network Attached Storage (NAS)
At a Glance
How reliable is the Synology RackStation RS1226+ Review: Reliability, Specs & Verdict according to Mizex audits?
An exceptional short-depth 2U rackmount storage server for space-constrained network racks needing native 2.5GbE connectivity, provided you budget for essential first-party memory upgrades to maximize volume capacity.
What are the known quirks or drawbacks of the Synology RackStation RS1226+ Review: Reliability, Specs & Verdict?
Our reliability audit identified the following documented caveats:
- Strict vendor compatibility policies enforce drive qualification and restrict technical support on third-party RAM
- Base configuration includes only 4 GB RAM, requiring an expansion to 32 GB to create single storage volumes above 108 TB
- Single 250W power supply lacks redundant PSU capabilities for high-availability enterprise environments
What are the key engineering highlights of the Synology RackStation RS1226+ Review: Reliability, Specs & Verdict?
The top strengths recorded in our evaluation include:
- Compact 306.6 mm chassis depth enables seamless integration into shallow two-post and wall-mount equipment racks
- Dual native 2.5GbE interfaces deliver immediate multi-gigabit network throughput out of the box
- Dedicated dual M.2 2280 NVMe SSD slots enable high-speed read/write caching without consuming front drive bays
- Scalable up to 12 total drive bays through an RX426 expansion enclosure over USB-C