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Silver rackmount NAS chassis with sixteen front drive bays and redundant power supplies

Qnap

Qnap CTL-ES1686DC-2123IT-32G 32GB rackmount NAS

SKU CH-EES8-5Y8FK MPN CTL-ES1686DC-2123IT-32G

A 16-bay rackmount NAS controller with an Intel Xeon D-2123IT processor and 32 GB memory, supporting up to 352 TB of SAS and SATA storage

  • CPUIntel® Xeon® D-2123IT 4-core 2.2 GHz processor (burst up to
  • Form factor16-Bay
  • Power drawOperating Mode, Typical: 500.87 W
  • Drive interface16 x SAS (16 x Bay)
  • Installed RAM32 GB
  • Maximum RAM capacity512 GB
  • Intel Xeon D-2123IT four-core processor at 2.20 GHz with 3.0 GHz burst
  • 32GB memory installed, expandable to 512GB across eight slots
  • Redundant hot-swap 770W power supplies maintain uptime
  • Sixteen SAS bays support 3.5-inch and 2.5-inch drives up to 352TB
  • Compact 132 mm 2U rackmount form factor fits dense deployments

Purpose-built controller

This Qnap CTL-ES1686DC-2123IT-32G is a new rackmount NAS controller FRU designed for the ES1686dc chassis. It delivers an Intel Xeon D-2123IT 4-core processor running at 2.20 GHz with burst up to 3.0 GHz and 32 GB of installed memory across eight slots. The unit supports 16 SAS drive bays for 3.5-inch or 2.5-inch SAS/SATA hard disks and SSDs, scaling to a maximum raw capacity of 352 TB. It targets environments that need ultra-high performance for a large number of concurrent users.

Thermals and power

Redundant hot-swap power supplies accept 90 to 264 VAC input and are rated at 770 W, with typical operating draw measured at 500.87 W. The controller is specified for continuous operation between 0 and 40 °C and can be stored from -20 to 70 °C. Humidity tolerance spans 5 to 95 % RH non-condensing with a wet-bulb limit of 27 °C. No power supply or battery backup unit is included with this FRU.

Build integration

The controller occupies a 16-bay form factor measuring 132 by 483.05 by 630.62 mm and weighs 25.83 kg net. It requires a compatible ES1686dc chassis, separate power supply modules and a battery backup unit to become operational. Eight memory slots allow expansion up to 512 GB for workloads that outgrow the factory 32 GB. Builders who need integrated power supplies or a populated drive set should look elsewhere.

How it compares

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

Price $3,850.99
Cheaper than about 79% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameQNAP
Part numberCTL-ES1686DC-2123IT-32G
Recommended useUltra high prerformance for large number of users
Processor
CPUIntel® Xeon® D-2123IT 4-core 2.2 GHz processor (burst up to 3.0 GHz) per controller
Memory
Installed RAM32 GB
Maximum RAM capacity512 GB
RAM slots8
Storage
Drive interface16 x SAS (16 x Bay)
Drives includedDiskless System
Power
Power drawOperating Mode, Typical: 500.87 W
Power detailsRedundant/ Hot Swap Power Vin:90 to 264VAC;770 W
Size & build
Form factor16-Bay
Product dimensions132 × 483.05 × 630.62 mm
Product weight(Net): 25.83 kg
Weight (Gross): 32.69 kg
Shipping weight4.76 kg
Package size394 × 318 × 267 mm
Compatibility
Compatible drives3.5 in SAS/SATA hard disk drives
2.5 in SAS/SATA hard disk drives
2.5 in SAS/SATA solid state drives
Environment & compliance
Temperature rangeOperating Temperature: 0–40 °C (32 °F - 104 °F)
Storage Temperature: -20–70 °C (-4 °F - 158 °F)
Humidity range5-95% RH non-condensing, wet bulb: 27 °C (80.6 °F)
More details
Maximum capacity352 TB

Questions about this item

How do I install the Intel Xeon D-2123IT controller into the 16-bay SAS chassis, and what step is often missed?

Slide the controller module into the dedicated slot until the latch clicks, then seat all 16 SAS drive trays; the step often missed is verifying both redundant 770 W power supplies are fully engaged before powering on.

Which components will need replacement first during long-term operation of this 32 GB system?

The hot-swap SAS drives and the dual 770 W power supplies are the primary field-replaceable units; memory can be expanded later using the eight DIMM slots up to 512 GB.

What thermal limit appears first when the dual-controller NAS runs sustained workloads at 500.87 W typical draw?

The operating temperature ceiling of 40 °C is the first limit reached; airflow must keep the 132 mm-high enclosure within the 5–95 % RH non-condensing range to avoid throttling.

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