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Black 1U rackmount chassis with four drive bays and front LEDs

Synology Inc.

Synology RS1626xs+ Xeon D-1726 4-Bay Rackmount NAS 64GB 80TB 25GbE

SKU CH-W65J-EFX54

A 4-bay rackmount NAS with Xeon D-1726 processor, 64GB DDR4, 80TB of enterprise drives and dual 25GbE ports

  • CPUIntel Xeon
  • Form factor4-Bay
  • LAN ports2 x RJ-45 10GbE LAN Ports 2 x SFP28 25GbE Ports via Synology
  • USB ports2 x USB 3.2 Gen 1 Ports
  • Installed RAM64 GB
  • Drives included80 TB (4 × 20 TB)
  • Xeon D-1726 6-core processor powers virtualization and multi-user workloads
  • 64GB DDR4 ECC memory handles large datasets and concurrent applications
  • 80TB raw capacity with four 20TB enterprise drives stores business-critical data
  • Dual 25GbE SFP28 and dual 10GbE RJ-45 ports enable high-speed network connectivity
  • Fully assembled and tested with DSM software ready for deployment

1U 4-Bay Rackmount NAS for Enterprise Workloads

The Synology RS1626xs+ is a 1U rackmount network-attached storage server built for businesses that require high-performance file sharing, virtualization, and backup. It arrives fully assembled with 64GB of DDR4 ECC memory and 80TB of raw capacity across four 20TB enterprise drives. An Intel Xeon D-1726 6-core processor handles demanding multi-user environments and containerized applications.

Dual 25GbE SFP28 and 10GbE RJ-45 Networking

Connectivity is the decisive specification: the unit includes two onboard 10GbE RJ-45 ports plus a pre-installed PCIe card adding two 25GbE SFP28 ports. A dedicated out-of-band management LAN port separates administrative traffic. This combination lets the NAS saturate high-speed backbone links while maintaining remote management access.

Suits IT Teams Needing Turnkey High-Throughput

Organisations that want a validated, ready-to-rack appliance with enterprise drives and ECC memory will benefit from the pre-tested configuration. Buyers who need more than four drive bays without adding an expansion unit, or who require Fibre Channel connectivity, should evaluate alternative platforms.

How it compares

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

Price $12,748.99
Pricier than about 81% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRS1626xs+
Processor
CPUIntel Xeon
Memory
Installed RAM64 GB
Storage
Drives included80 TB (4 × 20 TB)
Connectivity
Management optionsWeb-Based, DHCP Client
Ports & slots
LAN ports2 x RJ-45 10GbE LAN Ports
2 x SFP28 25GbE Ports via Synology PCIe Card
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 factor4-Bay
Product dimensions44 mm × 481.9 mm × 668.5 mm
Product weight9.5 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 range5 °C - 35 °C
Humidity range8% to 80% RH
More details
Indicator lightsPower, HDD (Hard Disk Drive), LAN (10/100)

Questions about this item

How does the 64 GB DDR4 ECC memory perform when running multiple virtual machines and heavy file services?

The 64 GB DDR4 ECC configuration supports concurrent virtual machines, large file caches and database workloads while correcting single-bit errors to maintain data integrity under sustained load.

What does the 25 GbE SFP28 interface actually deliver in a production network?

The dual-port 25 GbE SFP28 card provides up to 25 Gbps per port for high-throughput tasks such as backup replication and virtualization storage, limited by the switch and cabling used.

What rack space and clearances does the 1U chassis require for installation?

The unit occupies 1U (44 mm) of rack height, 481.9 mm width and 668.5 mm depth; allow rear clearance for dual C14 power cords and front clearance for drive-bay access.

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