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Silver 1U rackmount server with four drive bays visible behind front panel

Synology Inc.

Synology RS1626xs+ rackmount NAS Intel Xeon D-1726 16GB 16TB 25GbE

SKU CH-TXSZ-70P39

A 1U four-bay rackmount NAS with Xeon D-1726 processor, 16 GB DDR4 ECC memory, 16 TB of enterprise drives and dual 25 GbE SFP28 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 RAM16 GB
  • Drives included16 TB (4 × 4 TB)
  • Intel Xeon D-1726 6-core processor powers virtualization and heavy workloads
  • 16GB DDR4 ECC RDIMM memory scales to 64GB for demanding apps
  • Dual 10GbE RJ-45 plus 25GbE SFP28 ports deliver high-speed networking
  • Four 4TB Synology Enterprise drives provide 16TB ready-to-use storage
  • 1U 4-bay rackmount design expands to 16 drives with Synology expansion unit

4-bay rackmount NAS with Xeon D-1726

The Synology RS1626xs+ is a 1U, 4-bay enterprise NAS powered by an Intel Xeon D-1726 6-core processor and 16GB DDR4 ECC memory. It arrives fully assembled with four 4TB Synology Enterprise drives for 16TB raw capacity. Designed for businesses running virtualization, file sharing, backup or surveillance workloads that need high throughput and data integrity.

Check 25GbE switch and expansion-unit compatibility

Verify your network infrastructure includes SFP28-capable 25GbE switching to use the included dual-port adapter. The single PCIe Gen4 x8 slot is occupied by this card, so no further expansion cards can be added. Confirm rack depth clearance for the 668.5 mm chassis and 100-240 VAC power availability. Two C13-to-C14 cords are supplied for redundant PDU connection.

Dual 25GbE ports and enterprise drives included

The pre-installed Synology 2-port 25GbE SFP28 adapter adds high-speed connectivity beyond the built-in dual 10GbE RJ-45 and management ports. Four 4TB enterprise-class drives are installed and tested, eliminating drive selection and burn-in time. DSM provides snapshot replication, Active Backup Suite and virtualization support on this validated hardware stack.

How it compares

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

Price $5,962.99
Cheaper than about 56% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameSynology
Model nameRS1626xs+
Processor
CPUIntel Xeon
Memory
Installed RAM16 GB
Storage
Drives included16 TB (4 × 4 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

Does the RS1626xs+ ship with drives installed or do I need to buy them separately?

The unit arrives fully assembled with four 4TB Synology Enterprise NAS drives installed, providing 16TB of raw capacity out of the box.

Should I choose the 16GB configuration or upgrade to 64GB for virtualization workloads?

The system includes 16GB DDR4 ECC RDIMM and supports expansion to 64GB; start with 16GB for general file sharing and add memory later if you run multiple VMs or heavy Docker containers.

What real throughput can I expect from the 25GbE SFP28 ports when the NAS is in production?

Dual 25GbE SFP28 ports via the included PCIe adapter deliver up to 25Gbps per port for high-speed backup, replication and virtualization traffic over compatible switches.

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