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 48GB 3.2TB cache 192TB
A 12-bay 2U rackmount NAS with Xeon D-1726 processor, 48GB DDR4 ECC memory, 3.2TB SSD cache and 192TB of enterprise drives pre-installed
- 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 Memory48GB
- Included HDD Capacity192TB (12 x 16TB)
- 12-bay rackmount design fits dense storage in 2U
- 48 GB DDR4 memory handles heavy multitasking workloads
- 2 TB Synology Enterprise cache accelerates frequent data access
- 192 TB raw capacity from twelve 16 TB drives
- Dual 10 GbE RJ-45 ports enable high-speed network throughput
12-Bay Rackmount NAS with Xeon D-1726
The Synology RS3626xs is a 2U enterprise network-attached storage server built around a 6-core Intel Xeon D-1726 processor. It arrives fully assembled with 48GB of DDR4 ECC memory, 3.2TB of enterprise cache via two 1.6TB modules, and twelve 16TB Synology drives providing 192TB of raw capacity. This configuration targets organisations that need immediate, high-density file storage and virtualization support without manual drive installation.
Verify 10GbE switch ports
The unit provides two integrated 10GbE RJ-45 LAN ports plus a dedicated out-of-band management port, so your network infrastructure must support 10GbE to utilise the native throughput. Two PCIe Gen 4 x8 slots are available for additional network adapters or cache hardware if expansion is planned. Ensure the rack enclosure accommodates the 724mm depth and that the 100-240 VAC power input matches your PDU configuration. The operating temperature range is 0°C to 35°C.
Sustained sequential throughput above 3,700 MB/s
Synology reports sequential read performance exceeding 6,300 MB/s and write performance exceeding 3,700 MB/s under its test conditions, indicating the system maintains high throughput during extended operations rather than only in short bursts. Redundant power supplies protect against single-supply failure during continuous workloads. The Xeon D-1726 and 48GB memory combination supports consistent performance for virtualization, surveillance, and multi-site collaboration tasks over long periods.
Highlights
- 12-bay rackmount design fits dense storage in 2U
- 48 GB DDR4 memory handles heavy multitasking workloads
- 2 TB Synology Enterprise cache accelerates frequent data access
- 192 TB raw capacity from twelve 16 TB drives
- Dual 10 GbE RJ-45 ports enable high-speed network throughput
Specifications
| Brand | Synology |
|---|---|
| Model | RS3626xs |
| Port RJ-45 | 2 x RJ-45 10GbE LAN Port 1 x Out-of-Band Management LAN Port |
| Port USB | 2 x USB 3.2 Gen 1 Ports |
| Form Factor | 12-Bay |
| Processor | Intel Xeon |
| Installed Memory | 48GB |
| Included HDD Capacity | 192TB (12 x 16TB) |
| 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
What drives, cache and memory come pre-installed in the RS3626xs?
The unit ships with twelve 16 TB SATA drives for 192 TB raw capacity, two 1.6 TB cache modules totalling 3.2 TB, and 48 GB DDR4 ECC memory already installed.
Should I pick the 12-bay RS3626xs or a smaller Synology rackmount model?
Choose the 12-bay RS3626xs when you need up to 192 TB in a single 2U chassis with dual 10GbE ports and room for two PCIe Gen 4 x8 cards; a smaller model suits lighter capacity or slot requirements.
What do the 6,300 MB/s read and 3,700 MB/s write figures mean for daily workloads?
Those are Synology's sequential benchmarks under test conditions; real-world throughput will vary with RAID level, network topology, drive mix and the specific application workload.
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