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

Synology Inc.

Synology RS1626xs+ Xeon D-1726 4-Bay Rackmount NAS 32GB 1.6TB Cache 16TB Drives

SKU CH-A3CN-QJGDA

Enterprise 4-bay rackmount NAS with Xeon D-1726 processor, 32 GB DDR4, 1.6 TB NVMe cache and 16 TB of included drives

  • CPUIntel Xeon
  • Form factor4-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 RAM32 GB
  • Drives included16 TB (4 × 4 TB)
  • Intel Xeon D-1726 6-core CPU powers demanding workloads
  • 32GB DDR4 ECC memory ensures data integrity
  • Dual 10GbE RJ-45 ports deliver high-speed connectivity
  • 6TB NVMe cache accelerates frequent data access
  • 16TB enterprise drives provide protected storage capacity

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 ships fully assembled with an Intel Xeon D-1726 processor, 32GB of DDR4 ECC memory, and four enterprise-class drives pre-installed for immediate deployment.

16TB Raw Storage with 1.6TB NVMe Cache

The unit provides 16TB of raw capacity across four 4TB Synology Enterprise drives, complemented by two 800GB NVMe SSDs configured as read-write cache. This combination handles mixed random I/O and metadata-heavy applications comfortably, while the four-bay chassis limits total internal drive expansion without an external expansion unit.

Dual 10GbE and PCIe Expansion in 1U

Dual RJ-45 10GbE LAN ports and a dedicated out-of-band management port deliver high-throughput connectivity straight from the chassis. A PCIe Gen4 x8 slot allows adding a network adapter or HBA, and the included C13-to-C14 cords support redundant power distribution. The short 668.5mm depth fits shallow racks, though the fixed rail kit requires compatible square-hole mounting.

How it compares

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

Price $9,007.99
Pricier than about 65% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRS1626xs+
Processor
CPUIntel Xeon
Memory
Installed RAM32 GB
Storage
Drives included16 TB (4 × 4 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 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

Will the dual 10GbE RJ-45 ports work with my existing 1GbE switch?

Yes, the 10GbE ports auto-negotiate down to 1GbE so the NAS connects to your current switch at its maximum speed.

How can I confirm the 1.6TB NVMe cache is active after setup?

In DSM open Storage Manager → SSD Cache to see both 800GB modules recognised and the cache status showing "Normal".

Are the four 4TB enterprise drives and both 800GB cache modules already installed?

The unit ships fully assembled with the 16TB of drives and the 1.6TB cache pre-installed; only network cables and a rack rail kit need to be added.

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