Side-by-Side Comparison
Synology RackStation RS826RP+ vs Zella DC Zella Stack
Standardized 5-pillar engineering audit, thermal telemetry, verified longevity metrics, and complete technical specification diff.
▲ DOCUMENTED QUIRKS
Synology RackStation RS826RP+
Composite Score:
4.3
/ 5.0
A resilient 1U rackmount NAS built for continuous uptime with dual redundant power supplies, tempered by legacy 1GbE baseline networking.
★ Recommended Winner
● HIGHLY RATED
Zella DC Zella Stack
Composite Score:
4.5
/ 5.0
A highly capable modular micro data center combining courier-transportable stackable architecture with hybrid air/liquid cooling support up to 124kW and comprehensive telemetry.
⚖️
Mizex Comparative Audit Verdict
The Zella DC Zella Stack achieves the higher Mizex Composite Score (4.5 vs 4.3), leading across 3 of 5 engineering pillars. With an advantage in Engineering & Architecture, Thermal, Power & Acoustics, Buyer Value & Upgrades, it represents the stronger technical recommendation.
5-Pillar Engineering Telemetry
Detailed comparison across standardized normalized 1.0 – 5.0 engineering pillars.
Synology RackStation RS826RP+
Zella DC Zella Stack
Engineering & Architecture
(30%)
Winner: Zella DC Zella Stack (+0.4)
4.2
4.6
Build Quality & Materials
(20%)
Winner: Synology RackStation RS826RP+ (+0.1)
4.4
4.3
Thermal, Power & Acoustics
(20%)
Winner: Zella DC Zella Stack (+0.4)
4.0
4.4
Real-World Reliability
(20%)
Winner: Synology RackStation RS826RP+ (+0.1)
4.6
4.5
Buyer Value & Upgrades
(10%)
Winner: Zella DC Zella Stack (+0.3)
4.1
4.4
Synology RackStation RS826RP+: Strengths & Caveats
✔ Advantages
- Dual redundant power supplies ensure hardware failover and continuous operation in critical environments
- Expandable storage architecture scaling up to 8 bays and 192 TB raw capacity using the RX426 expansion unit
- PCIe Gen 3.0 slot provides an upgrade path for 10GbE/25GbE networking or M.2 NVMe caching
- Four 1GbE RJ-45 interfaces with Link Aggregation and failover support
✖ Documented Caveats
- Lacks native 10GbE or multi-gigabit networking out of the box
- No integrated onboard M.2 NVMe slots, requiring the single PCIe slot for cache expansion
- Factory configuration supplies only 4 GB of system memory
Zella DC Zella Stack: Strengths & Caveats
✔ Advantages
- Modular stackable block architecture enables standard courier delivery and elevator transport without heavy rigging equipment
- Scalable rack framework accommodates 24RU to 48RU configurations in 12RU increments
- Supports concurrent air and liquid cooling architectures with aggregate heat dissipation up to 124kW
- Integrated Zella Sense telemetry platform provides extensive environmental sensing, security cameras, and automated monitoring
✖ Documented Caveats
- Dedicated cooling sub-assemblies occupy 6RU to 12RU of internal space, reducing usable IT capacity to as little as 9RU
- Realized cabinet weight savings (28% to 47%) fall short of the advertised 75% reduction over predecessor models
Technical Specification Comparison
Side-by-side spec alignment. Rows highlighted with subtle shading denote differing specifications.
| Specification | Synology RackStation RS826RP+ | Zella DC Zella Stack |
|---|---|---|
| Brand DIFF | Synology | Zella DC |
| Model DIFF | RackStation RS826RP+ | Zella Stack |
| Form Factor DIFF | 1U Rackmount | Modular stackable micro data center |
| Cpu Model DIFF | AMD Ryzen V1500B | — |
| Cpu Architecture DIFF | 64-bit | — |
| Cpu Cores Threads DIFF | 4 cores, 8 threads | — |
| Cpu Base Frequency DIFF | 2.2 GHz | — |
| Hardware Encryption Engine DIFF | Supported | — |
| System Memory Preinstalled DIFF | 4 GB DDR4 ECC SODIMM | — |
| Memory Slots DIFF | 2x SODIMM | — |
| Maximum Memory Capacity DIFF | 32 GB (16 GB x 2) | — |
| Drive Bays DIFF | 4x 3.5"/2.5" SATA | — |
| Drive Interface DIFF | SATA 6Gb/s (Hot-swappable) | — |
| Maximum Drive Bays With Expansion DIFF | 8 bays (via Synology RX426) | — |
| Maximum Raw Capacity DIFF | 192 TB | — |
| Network Interfaces DIFF | 4x 1GbE RJ-45 | — |
| Link Aggregation Failover DIFF | Supported | — |
| Pcie Expansion Slot DIFF | 1x PCIe Gen 3.0 x8 slot (x4 link) | — |
| M2 Nvme Support DIFF | Supported via optional PCIe adapter card | — |
| Sequential Read Throughput DIFF | Over 2,000 MB/s | — |
| Sequential Write Throughput DIFF | Over 1,300 MB/s | — |
| Power Supply DIFF | Dual redundant power supply (RP) | — |
| Operating System DIFF | Synology DiskStation Manager (DSM) | — |
| Rack Unit Capacity DIFF | — | 24RU to 48RU (scalable in 12RU increments: 24RU, 36RU, 48RU) |
| Usable It Capacity DIFF | — | 9RU to 39RU (configuration dependent) |
| Cabinet Weight 24ru DIFF | — | 115 kg |
| Cabinet Weight 36ru DIFF | — | 150 kg |
| Cabinet Weight 48ru DIFF | — | 185 kg |
| Max Cooling Capacity DIFF | — | 124 kW |
| Cooling Module Options DIFF | — | 3kW (6RU), 6kW (6RU), 6kW + 6kW N+1 (12RU), 15kW (12RU) |
| Cooling Architectures DIFF | — | Concurrent air and liquid cooling |
| Compute Density Support DIFF | — | >100 kW |
| Environmental Monitoring DIFF | — | Zella Sense |
| Integrated Sensors DIFF | — | Temperature, humidity, smoke, motion, water leak, door status |
| Integrated Peripherals DIFF | — | Internal lighting, security camera |
| Structural Architecture DIFF | — | Base infrastructure block with stackable IT expansion blocks |
Need to evaluate a different configuration?
🔍 Compare Other Hardware