Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
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Synology Inc.
Synology RS3626xs Xeon D-1726 12-bay rackmount NAS 8GB 240TB (12 x 20TB) 25GbE
A 12-bay rackmount NAS with Xeon D-1726 processor, 8GB DDR4 ECC memory, 240TB of Synology Enterprise drives and dual 25GbE SFP28 ports
- Port RJ-452 x RJ-45 10GbE LAN Port 1 x Out-of-Band Management LAN Port
- Port USB2 x USB 3.2 Gen 1 Ports
- Form Factor12-Bay
- ProcessorIntel Xeon
- Installed Memory8GB
- Included HDD Capacity240TB (12 x 20TB)
- Ready-to-deploy 240 TB storage with twelve 20 TB enterprise drives
- 6-core Xeon D-1726 and 8 GB DDR4 ECC power demanding workloads
- Dual 25 GbE SFP28 plus two 10 GbE RJ-45 for high-throughput networking
- Two PCIe Gen 4 x8 slots enable future 25 GbE, Fibre Channel or SSD cache
- Redundant power supplies protect uptime from single-unit failure
Synology RS3626xs 12-Bay Rackmount NAS
The Synology RS3626xs is a 12-bay 2U rackmount NAS built for enterprise storage workloads. It arrives fully assembled with twelve 20 TB Synology Enterprise drives for 240 TB raw capacity. A 6-core Intel Xeon D-1726 processor and 8 GB DDR4 ECC memory power file, virtualization and backup services. Dual redundant power supplies protect uptime against single-unit failure.
Who This Suits and Who Should Look Elsewhere
IT teams needing dense, high-capacity network storage with 25 GbE connectivity will match this configuration. The 12-bay chassis supports mixed 3.5-inch HDDs and 2.5-inch SATA SSDs for flexible media choices. Buyers requiring more than 48 GB memory, additional PCIe slots beyond two Gen 4 x8, or drive bays beyond twelve should evaluate larger platforms.
Deciding Specification 25 GbE SFP28 Connectivity
Two onboard 25 GbE SFP28 ports deliver high-throughput links for virtualization, backup replication and multi-user file access. Combined with dual 10 GbE RJ-45 ports, the network stack handles concurrent heavy workloads without a separate adapter. If the infrastructure tops out at 10 GbE or 1 GbE, the 25 GbE capability remains unused and a lower-speed model may fit better.
Highlights
- Ready-to-deploy 240 TB storage with twelve 20 TB enterprise drives
- 6-core Xeon D-1726 and 8 GB DDR4 ECC power demanding workloads
- Dual 25 GbE SFP28 plus two 10 GbE RJ-45 for high-throughput networking
- Two PCIe Gen 4 x8 slots enable future 25 GbE, Fibre Channel or SSD cache
- Redundant power supplies protect uptime from single-unit failure
Specifications
| Brand | Synology |
|---|---|
| Model | RS3626xs |
| Port RJ-45 | 2 x RJ-45 10GbE LAN Port 1 x Out-of-Band Management LAN Port 2 x 25GbE SFP28 |
| Port USB | 2 x USB 3.2 Gen 1 Ports |
| Form Factor | 12-Bay |
| Processor | Intel Xeon |
| Installed Memory | 8GB |
| Included HDD Capacity | 240TB (12 x 20TB) |
| Management | Web-Based, DHCP Client |
| LEDs | Power, HDD (Hard Disk Drive), LAN (10/100) |
| Power | 100-240 VAC 50/60Hz |
| Temperature | 0°C to 35°C (32°F to 95°F) |
| Humidity | 8% to 80% RH |
| Dimensions | 88 mm × 482 mm × 724 mm |
| Weight | 14.5 kg |
| Package Contents | Main Unit × 1 Accessory Pack × 1 C13 to C14 power cord × 2 Front Cover × 1 All Configuration Items |
Questions about this item
How do I install the Synology 2-Port 25GbE Adapter and what step is often missed?
The adapter fits into one of the two PCIe Gen 4 x8 slots; the step often missed is seating the SFP28 modules firmly until they click and then enabling the ports in DSM before cabling.
Which components will need replacement first under continuous operation?
The twelve 20 TB Synology Enterprise NAS drives are the primary wear items; the redundant power supplies and system fan are also field-replaceable units.
What performance limit appears first during sustained heavy workloads?
Sequential throughput tops out at 6 300 MB/s read and 3 700 MB/s write, so the 25 GbE link and drive array saturate before the Xeon D-1726 CPU does.
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