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Synology Inc.

Synology RS3626xs Xeon D-1726 12-Bay 48GB 240TB rackmount NAS

SKU CH-4T0B-3455A

A 12-bay rackmount NAS with Xeon D-1726 processor, 48GB DDR4 RAM, and 240TB of Synology Enterprise drives, fully assembled and tested

  • CPUIntel Xeon
  • Form factor12-Bay
  • LAN ports2 x RJ-45 10GbE LAN Port 1 x Out-of-Band Management LAN Port
  • USB ports2 x USB 3.2 Gen 1 Ports
  • Installed RAM48 GB
  • Drives included240 TB (12 × 20 TB)
  • Enterprise 12-bay capacity stores 240TB for large-scale data retention
  • 6-core Xeon D-1726 processor handles demanding virtualization and multi-user workloads
  • 48GB DDR4 ECC memory ensures data integrity during intensive operations
  • Dual 10GbE ports enable high-throughput networking with link aggregation support
  • Redundant power supplies protect service availability against single-point failures

Enterprise 12-bay rackmount NAS

The Synology RS3626xs is a 2U rackmount network-attached storage server with twelve drive bays, a 6-core Intel Xeon D-1726 processor and 48GB of DDR4 ECC memory. It ships fully assembled and tested with twelve 20TB Synology Enterprise drives providing 240TB of raw capacity. This platform targets businesses that need centralised file storage, virtualisation hosting, surveillance recording or multi-site collaboration in a single appliance.

Network and expansion limits

Two onboard 10GbE RJ-45 ports support link aggregation for higher throughput and failover, with Synology reporting sequential reads above 6,300 MB/s and writes above 3,700 MB/s under its test conditions. Two PCIe Gen 4 x8 slots allow the addition of compatible 10GbE, 25GbE or Fibre Channel adapters and SSD caching hardware. The system accepts twelve 3.5-inch SATA HDDs or 2.5-inch SATA SSDs and can be expanded further with supported expansion units.

Pre-deployment checks

Verify that your rack provides a 2U space measuring at least 88 mm high, 482 mm wide and 724 mm deep, and that the floor or shelf can support 14.5 kg. Confirm the site operates within 0 °C to 35 °C and 8 % to 80 % relative humidity with 100-240 VAC power available for the dual redundant supplies. Ensure your network infrastructure can terminate two 10GbE RJ-45 links and the out-of-band management port, and plan for any PCIe add-in cards the workloads may require.

How it compares

Measured against everything we stock in Rack-Mounted NAS Servers, at today’s prices. Recalculated every night.

Price $19,288.99
Pricier than about 91% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRS3626xs
Processor
CPUIntel Xeon
Memory
Installed RAM48 GB
Storage
Drives included240 TB (12 × 20 TB)
Connectivity
Management optionsWeb-Based, DHCP Client
Ports & slots
LAN ports2 x RJ-45 10GbE LAN Port
1 x Out-of-Band Management LAN Port
USB ports2 x USB 3.2 Gen 1 Ports
Power
Power details100-240 VAC 50/60 Hz
Size & build
Form factor12-Bay
Product dimensions88 mm × 482 mm × 724 mm
Product weight14.5 kg
In the box
In the boxMain Unit × 1
Accessory Pack × 1
C13 to C14 power cord × 2
Front Cover × 1
All Configuration Items
Environment & compliance
Temperature range0 °C to 35 °C (32 °F to 95 °F)
Humidity range8% to 80% RH
More details
Indicator lightsPower, HDD (Hard Disk Drive), LAN (10/100)

Questions about this item

Should I pick the 12-bay unit with 240 TB of drives or a smaller configuration?

The 12-bay chassis is fully populated with twelve 20 TB drives, giving 240 TB of raw capacity in a single 2U rackmount unit.

What does the 6,300 MB/s sequential read figure mean for my workloads?

Under Synology test conditions the RS3626xs can sustain over 6,300 MB/s sequential read and 3,700 MB/s sequential write, supporting large-file transfers and heavy streaming workloads.

How do the two 10GbE RJ-45 ports limit real-world throughput?

Each port caps at 10 Gbps; with Link Aggregation they can combine for higher bandwidth, load balancing and failover, but single-stream transfers cannot exceed one 10 GbE link.

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