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Silver 1U rackmount NAS with four drive bays and front status LEDs

Synology Inc.

Synology RS1626xs+ Xeon D-1726 4-Bay Rackmount NAS 64GB 48TB 25GbE

SKU CH-4ATA-85MS8

A 4-bay 1U rackmount NAS with Xeon D-1726 processor, 64GB DDR4 ECC memory, dual 10GbE and dual 25GbE ports, plus 48TB of enterprise drives pre-installed

  • Port RJ-452 x RJ-45 10GbE LAN Ports 2 x SFP28 25GbE Ports via Synology
  • Port USB2 x USB 3.2 Gen 1 Ports
  • Form Factor4-Bay
  • ProcessorIntel Xeon
  • Installed Memory64GB
  • Included HDD Capacity48TB (4 x 12TB)
  • Intel Xeon D-1726 powers virtualization and multi-user workloads
  • 64GB DDR4 ECC memory handles intensive databases and VMs
  • 48TB Synology Enterprise drives deliver mission-critical storage capacity
  • Dual 25GbE SFP28 plus dual 10GbE RJ-45 enable high-speed networking
  • 1U 4-bay rackmount design scales to 16 drives with expansion unit

4-Bay Rackmount NAS with Xeon D-1726

The Synology RS1626xs+ is a 1U rackmount network-attached storage system built around an Intel Xeon D-1726 processor. It arrives fully assembled with 64GB of DDR4 memory and four 12TB Synology Enterprise drives providing 48TB of raw capacity. The platform targets businesses that need consolidated file sharing, virtualization hosting, backup and surveillance workloads in a compact form factor.

Check rack space, power and network uplinks

Verify that your rack can accommodate a 44mm high, 481.9mm wide and 668.5mm deep unit weighing 9.5kg. Confirm the 100-240VAC power supply matches your PDU and that two C13 to C14 cords are acceptable. Ensure your switch has free SFP28 ports for the included 25GbE adapter and RJ-45 ports for the dual 10GbE connections, plus a separate management LAN drop.

Suits IT teams needing integrated 25GbE

This configuration fits organisations that want out-of-the-box 25GbE connectivity, ECC memory and enterprise drives without separate procurement. It is less suitable for buyers who need more than four internal drive bays without adding an expansion unit, or for environments that require a different processor family or lower memory capacity.

Highlights

  • Intel Xeon D-1726 powers virtualization and multi-user workloads
  • 64GB DDR4 ECC memory handles intensive databases and VMs
  • 48TB Synology Enterprise drives deliver mission-critical storage capacity
  • Dual 25GbE SFP28 plus dual 10GbE RJ-45 enable high-speed networking
  • 1U 4-bay rackmount design scales to 16 drives with expansion unit

Specifications

BrandSynology
ModelRS1626xs+
Port RJ-452 x RJ-45 10GbE LAN Ports
2 x SFP28 25GbE Ports via Synology PCIe Card
1 x Out-of-Band Management LAN Port
Port USB2 x USB 3.2 Gen 1 Ports
Form Factor4-Bay
ProcessorIntel Xeon
Installed Memory64GB
Included HDD Capacity48TB (4 x 12TB)
ManagementWeb-Based, DHCP Client
LEDsPower, HDD (Hard Disk Drive), LAN (10/100)
Power100-240 VAC 50/60Hz
Temperature5°C - 35 °C
Humidity8% to 80% RH
Dimensions44 mm × 481.9 mm × 668.5 mm
Weight9.5 kg
Package ContentsMain Unit × 1
Accessory Pack × 1
C13 to C14 power cord × 2
Front Cover × 1
All Configuration Items

Questions about this item

Does the RS1626xs+ ship with the 48 TB of Enterprise drives and the 25 GbE card already installed?

Yes. The unit arrives fully assembled with four 12 TB Synology Enterprise drives, 64 GB of DDR4 ECC memory, and the Synology 2-port 25 GbE PCIe adapter installed and tested.

Should I choose the standard 10 GbE RJ-45 ports or the 25 GbE SFP28 ports for my network backbone?

Use the two 25 GbE SFP28 ports on the included PCIe card for the highest throughput backbone, and keep the two 10 GbE RJ-45 ports for general client access or a secondary network segment.

How does the Xeon D-1726 with 64 GB RAM perform when running virtual machines and snapshot-heavy workloads?

The 6-core Xeon D-1726 and 64 GB DDR4 ECC provide ample compute headroom for multiple VMs, container workloads, and frequent DSM snapshots without memory pressure.

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