Seagate ST4000NM004A 3.5" 4TB SAS 12Gb/s 7200 RPM 256MB rackmount NAS
- 4 TB
- SAS 12Gb/s
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Compact 1U rackmount NAS with AMD Ryzen V1500B processor, 8GB DDR4 RAM, 3.2TB cache and four 20TB SATA drives pre-installed
The Synology RS826+ is a 1U rackmount NAS powered by a 2.2 GHz AMD Ryzen V1500B four-core processor with 8GB DDR4 ECC memory. It arrives fully assembled with 3.2TB of enterprise cache and four 20TB drives for 80TB total capacity. Four 1GbE ports and a PCIe Gen3 slot provide network flexibility for growing businesses.
This unit fits edge locations and remote offices needing dense storage in a compact rack form factor. Buyers who need more than four drive bays or require 10GbE or 25GbE connectivity without adding a card should look at other models. The 35 °C maximum operating temperature may limit deployment in harsh environments.
The four-core, eight-thread CPU delivers over 2,000 MB/s sequential read and 1,300 MB/s sequential write under Synology test conditions. Memory expands to 32 GB DDR4 ECC for heavier workloads. The PCIe Gen3 slot allows future 10GbE or 25GbE adapter upgrades as network demands increase.
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| Product | |
|---|---|
| Brand name | Synology |
| Model name | RS826+ |
| 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 | 6.4 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) |
The 8 GB DDR4 RAM is the main system memory and can be expanded to 32 GB later. The 3.2 TB cache consists of two 1.6 TB enterprise SSDs that accelerate frequent read and write operations. Both are already installed in this unit.
That number comes from Synology's internal test conditions. Real-world throughput will depend on your network layout, the four 1 GbE ports, drive workload and whether you add a 10 GbE or 25 GbE adapter in the PCIe slot.
Each port tops out at 1 Gbps. With Link Aggregation you can combine the four ports for load balancing and failover, but total bandwidth remains limited to the 1 GbE standard unless a faster PCIe network card is installed.
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