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Black 2U rackmount server chassis with twelve front drive bays and status LEDs

Synology Inc.

Synology RS3626xs 12-Bay Rackmount NAS 48GB 288TB 25GbE

SKU CH-SJPR-ZJG18

Twelve-bay rackmount NAS with 48GB DDR4 RAM, 288TB of SATA drives and dual 25GbE SFP28 ports

  • 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 included288 TB (12 × 24 TB)
  • 12-bay capacity scales to 288 TB with included enterprise drives
  • 48 GB DDR4 ECC memory handles virtualization and multi-user workloads
  • Dual 25 GbE SFP28 ports plus two 10 GbE RJ-45 links deliver high-throughput connectivity
  • Intel Xeon D-1726 6-core processor powers demanding business applications
  • Redundant power supplies protect service availability from single-supply failure

Enterprise 12-Bay Rackmount NAS

The Synology RS3626xs is a 2U rackmount network-attached storage server built for organizations that need high-capacity, centralized data management. It arrives fully assembled with twelve drive bays populated by 24TB enterprise hard drives, delivering 288TB of raw storage out of the box. The system targets IT departments handling virtualization, surveillance, and multi-site file collaboration workloads. It is not suited for buyers who need a desktop form factor or a lower-capacity starter appliance.

48GB DDR4 ECC Memory

The unit ships with 48GB of DDR4 ECC memory installed, reaching the maximum supported capacity for the Xeon D-1726 processor. This memory ceiling determines how many virtual machines, containers, or concurrent user sessions the NAS can sustain without paging to disk. Buyers planning heavier consolidation or larger deduplication volumes cannot expand beyond this limit and would need a different platform.

Pre-Populated Drive Installation

Because all twelve 3.5-inch SATA drives are factory-installed and the system is pre-tested, physical deployment is limited to rack mounting, connecting the two C14 power cords, and linking the two 10GbE RJ-45 ports or the 25GbE SFP28 adapters. The main installation risk is verifying that the rack depth accommodates the 724mm chassis and that the site power falls within the 100-240 VAC range; the unit weighs 14.5 kg and requires two-person handling or a lift.

How it compares

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

Price $20,254.99
Pricier than about 92% 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 included288 TB (12 × 24 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
2 × 25GbE SFP28
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

What does the 288 TB of installed enterprise drives mean for usable capacity in a typical RAID setup?

Twelve 24 TB drives give 288 TB raw; with Synology Hybrid RAID or RAID 6 you lose two drives for parity, leaving roughly 240 TB usable before filesystem overhead.

What real-world throughput can the two 25 GbE SFP28 ports sustain?

Synology reports sequential reads above 6 300 MB/s and writes above 3 700 MB/s under its test conditions; actual speeds depend on network switches, cabling and workload mix.

How much rack depth does the 724 mm chassis need including cables?

The unit is 724 mm deep; allow extra space at the rear for power cords and SFP28 cables so the total clearance exceeds the chassis length.

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