Seagate ST4000NM004A 3.5" 4TB SAS 12Gb/s 7200 RPM 256MB rackmount NAS
- 4 TB
- SAS 12Gb/s
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Four-bay 1U rackmount NAS with AMD Ryzen V1500B, 8GB DDR4, 1.6TB cache and 80TB of Synology Plus drives, fully assembled and tested
The Synology RS826RP+ is a 1U rackmount network-attached storage system built for edge deployments and branch offices. It uses a quad-core AMD Ryzen V1500B processor at 2.2 GHz with 8GB DDR4 RAM. The unit arrives fully assembled with four 20TB Synology Plus drives and 1.6TB enterprise cache. It targets organisations needing centralised file services and backup in a space-efficient form factor.
Operating temperature range is 0°C to 35°C with humidity tolerance of 5 to 95 percent relative humidity. Power input accepts 100 to 240 VAC at 50 or 60 Hz through a redundant supply. Four 1GbE RJ-45 ports support Link Aggregation for bandwidth pooling and automatic failover. The 44 mm height fits standard 19-inch racks without special clearance requirements.
Four pre-installed 20TB drives deliver 80TB raw capacity alongside two 800GB cache modules that accelerate random I/O on the hard drive array. A PCIe Gen3 slot accepts 10GbE or 25GbE adapters, an M.2 SATA adapter, or a combined M.2 and 10GbE card. One RX426 expansion unit can be attached to double bay count and raise raw capacity to 192TB with supported 24TB drives.
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| Product | |
|---|---|
| Brand name | Synology |
| Model name | RS826RP+ |
| Processor | |
| CPU | AMD Ryzen |
| Memory | |
| Installed RAM | 8 GB |
| Storage | |
| Drives included | 80 TB (4 × 20 TB) |
| Connectivity | |
| Management options | Web-Based, DHCP Client |
| Ports & slots | |
| LAN ports | 4 × 10/100/1000M |
| USB ports | 2 x USB 3.2 Gen 1 Ports |
| Power | |
| Power details | 100-240 VAC 50/60 Hz |
| Size & build | |
| Form factor | 4-Bay |
| Product dimensions | 44 mm × 480 mm × 492.6 mm |
| Product weight | 8.0 kg |
| In the box | |
| In the box | Main Unit × 1 Accessory Pack × 1 AC Power Cord × 1 All Configuration Items |
| Environment & compliance | |
| Temperature range | 0 °C - 35 °C |
| Humidity range | 5-95% R.H |
| More details | |
| Indicator lights | Power, HDD (Hard Disk Drive), LAN (10/100) |
Insert each 800GB SSD into the dedicated M.2 adapter card, secure it with the screw, install the card into the PCIe Gen3 slot, then enable the read-write cache in DSM Storage Manager — the step most often missed is creating the cache volume after the hardware is recognised.
The four 20TB Synology Plus drives and the two 800GB enterprise cache SSDs are the field-replaceable media; the 8GB DDR4 module is not user-serviceable, and the redundant power supplies are hot-swappable FRUs.
The operating ceiling is 35°C ambient; sustained loads push internal temperatures toward that limit first, triggering fan-speed increases and possible throttling before any drive or CPU threshold is reached.
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