QNAP ES1686dc-2123IT-64G


Enterprise NAS : QNAP ES1686dc-2123IT-64G

CPU: Intel® Xeon® D-2123IT 4-core 2.20 GHz processor (burst up to 3.0 GHz) per controller

RAM: 32 GB RDIMM DDR4 ECC (4x 8 GB) per controller (MAX 512 GB)

Flash Memory: 4 GB 

10 Gigabit Ethernet Port x4

PCIe Gen 3 x8 (CPU) : 2 per controller

USB 3.2 Gen 1 port : 2 per controller

Redundant Power Supply

5 Years Warranty

----- Reference -----

QNAP ES1686dc-2123IT-64G, 16 Bays NAS, Next-generation Enterprise ZFS NAS: High-performance and near-zero downtime high availability, CPU: Intel® Xeon® D-2123IT 4-core 2.20 GHz per controller, RAM: 32 GB RDIMM DDR4 ECC (4x 8 GB) per controller (MAX 512 GB), Flash Memory: 4 GB, 10 Gigabit Ethernet Port x4, PCIe Gen 3 x8 (CPU) : 2 per controller, USB 3.2 Gen 1 port : 2 per controller, Redundant Power Supply, 5 Years Warranty

Drive Bays : 16-Bays NAS
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QNAP ES1686dc-2123IT-64G

Next-generation Enterprise ZFS NAS: High-performance and near-zero downtime high availability

intel-xeon_E   citrix-ready   vm-ready   windows_2016   veeam_ready   openstack

Delivering enterprise high availability, the ES1686dc Enterprise ZFS NAS features Intel® Xeon® D processors, dual active controllers, up to 512 GB DDR4 ECC memory, SAS 12Gb/s, and ZFS that supports logical volume management. The ES1686dc runs the latest QES 2.1.0 operating system that supports near-limitless snapshots, SnapSync, block-level data deduplication, and inline data compression. Whether being used as a mission-critical file server, virtualization server, VDI, medium-sized data center, video streaming, surveillance storage, and efficient file backup & recovery, the ES1686dc helps your business to achieve service-level agreements for performance and uptime.

Dual active-active controllers

Intel® Xeon® D dual active-active controllers provide supreme uptime and redundancy to ensure high availability.

Reliable & High-performance

Battery-protected DRAM write to cache data protection and Flash read acceleration provides industry-leading random access performance.

2 x PCIe Gen 3 slots

PCIe expandability allows for 10GbE/25GbE adapters to increase application performance.

4 x 10GbE SFP+ ports

Four 10GbE SFP+ ports accelerate virtualization, large file sharing, and intensive data transfer.

Real-time SnapSync

Near-limitless snapshots and SnapSync for snapshot remote backup assist businesses to resume essential services in the shortest time.

Virtualization applications

Supports VMware® vSphere® 6.5, Windows Server® 2016 and Citrix® XenServer® 7.0 for storage virtualization. Compatible with OpenStack® cloud environments.

Active-Active high availability with optimal storage efficiency

In Active-Active storage system architecture, both controllers are able to provide a complete range of services, which is different from the Active-Standby architecture of single-controller systems. The Active-Active architecture does not have the disadvantage of idle computing resources. To leverage the strengths of the ES1686dc Active-Active controller architecture, it is recommended to create multiple storage pools and distribute their ownership between both controllers. This allows simultaneous output from both controllers for better load balancing.

Active-Standby single-controller system

With two HA systems you are paying twice the price and causing a load imbalance as workloads are only processed on the active system. A power outage could cause data loss, and the disconnected network invalidates the HA architecture.

Active-Active dual-controller system

Both controllers of the ES1686dc can carry traffic, along with Copy-To-Flash protection against power failure and the dual-path SAS interface. Besides conserving computing resources, a high-speed, uninterrupted, and high-availability storage service is also provided through communication protocols such as SMB, NFS and iSCSI.

High performance. High efficiency.

Virtualization Certifications Supported by ES1686dc


Intel® Xeon® D dual-controller ensures high availability and failure-resistant service

Powered by two Intel® Xeon® D processors, the ES1686dc features a dual active-active controller architecture that provides failover/failback operations as the standby controller can quickly take over if one controller breaks down. Redundant hot-swappable power supplies and cooling fans are also included to provide businesses with near-zero downtime high availability. The ES1686dc connects to the JBOD enclosure (TL-R1620Sdc) via the dual-path mini-SAS design to sustain continuous operations even if a JBOD cable is disconnected. Designed around redundancy, the ES1686dc is the best realization of reliable enterprise storage for uninterrupted mission-critical enterprise tasks and productivity.

Hardware Specification


CPU Intel® Xeon® D-2123IT 4-core 2.20 GHz processor (burst up to 3.0 GHz) per controller
CPU Architecture 64-bit x86
Floating Point Unit
Encryption Engine (AES-NI)
System Memory 32 GB RDIMM DDR4 ECC (4x 8 GB) per controller
Maximum Memory 512 GB (8 x 64GB)
Memory Slot 8 x R-DIMM/LR-DIMM DDR4
IMPORTANT: You can only use one type of dual in-line memory module (DIMM) at a time. Do not use registered DIMM (RDIMM) with load-reduction DIMM (LRDIMM) memory.
Flash Memory 4GB (Dual boot OS protection)
Drive Bay 16 x 3.5-inch
SAS 12Gb/s, backward-compatible to SAS 6Gb/s
Drive Compatibility 3.5-inch bays:
3.5-inch SAS/SATA hard disk drives
2.5-inch SAS/SATA hard disk drives
2.5-inch SAS/SATA solid state drives
The QDA-SA adapter is designed for QNAP Enterprise ZFS NAS and allows the use of a SATA 6Gbps drive in a 3.5-inch SAS drive bay
SSD Cache Acceleration Support
Read cache only
Cache for Copy To Flash (C2F) 1 per each controller (64GB M.2 SSD)
Gigabit Ethernet Port (RJ45) 3 for each controller (one for remote management)
10 Gigabit Ethernet Port 4 x 10GbE SFP+ for each controller
Wake on LAN (WOL)
Jumbo Frame
PCIe Slot 2 per controller
Slot 1: PCIe Gen 3 x8 (CPU)
Slot 2: PCIe Gen 3 x8 (CPU)
Card dimensions for PCIe slot 1~Slot 2:215 x 68.9 x 18.76 mm / 8.46 x 2.71 x 0.74 inches.
Wider cards can be installed if the next PCIe slot will not be used.
USB 3.2 Gen 1 port 2 per each controller
Note: The USB ports are for engineering purpose only. No external devices such as storage drives or UPS are supported.
Form Factor 3U Rackmount
LED Indicators System Power LED (Green): on/off
System Status (Green/ Orange): in operation, system errors, low power, degraded RAID mode, memory failure, fan/power supply failure, system/disk temperature too high, storage pool reaching threshold value, system performing take-over, power supply unit unplugged
LCD Status Display (Two-digit number): Status of JBOD connection
Buttons Power, Reset
Dimensions (HxWxD) 132 × 446.2 × 587.75 mm
Weight (Net) 30.22 kg
Weight (Gross) 34.92 kg
Operating Temperature 0 - 40 °C (32°F - 104°F)
Storage Temperature -20 - 70°C (-4°F - 158°F)
Relative Humidity 5-95% RH non-condensing, wet bulb: 27˚C (80.6˚F)
Power Supply Unit Redundant/ Hot Swap Power Vin:90~264VAC;770W
Power Consumption: Operating Mode, Typical 500.87 W
Tested with drives fully populated.
Fan Hot-swappable fan module (60*60*38mm; 16000RPM/12v/2.8A x 3)
System Warning Buzzer
Standard Warranty 5
Max. Number of Concurrent Connections (CIFS) - with Max. Memory 10000
Safety Standard FCC Class A (USA only)
CE Mark ( EN55022 Class A, EN55024)

Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications and refer to the hardware user manual to install compatible QNAP memory modules.

Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.

QNAP reserves the right to replace partial parts or accessories if the original is no longer available from its manufacturer/supplier. Any replacement would be fully tested and verified to meet strict compatibility and stability guidelines and will deliver identical performance to the original.

The terms HDMI, HDMI High-Definition Multimedia Interface, HDMI trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc.

Product images are for illustrative purposes only and may differ from the actual product. Due to differences in monitors, colors of products may also appear different to those shown on the site.

Designs and specifications are subject to change without notice.

: ES1686dc-2123IT-64G
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Hurry! only 2 items left in stock.