16-bay active-active dual-controller rackmount NAS
QNAP ES1686dc-R2-2123IT-64G
A high-availability 3U rackmount NAS with redundant active-active controllers and power supplies for mission-critical enterprise storage.
High-availability storage designed to reduce downtime
The QNAP ES1686dc-R2-2123IT-64G is an active-active dual-controller enterprise NAS designed to maintain service continuity through redundant controllers and power supplies. Its supplied QES features include ZFS snapshots, SnapSync, block-level data deduplication and inline data compression.
Key features and benefits
Active-active controllers
Dual active-active controllers provide redundancy and are designed to maintain availability during component service.
Protected write cache
The supplied NVRAM module reduces the risk of losing write-cache data during an unexpected power failure.
QES data services
The QES operating system supports ZFS snapshots, SnapSync, block-level deduplication and inline compression.
Virtualisation storage
The supplied content lists VMware® vSphere®, Windows Server® and Citrix® XenServer® support for storage virtualisation.
10GbE connectivity
Four 10GbE SFP+ ports per controller support large-file transfers and data-intensive network traffic.
PCIe expansion
Two PCIe Gen 3 x8 slots per controller support the supplied networking expansion options.
Who is the QNAP ES1686dc-R2-2123IT-64G best for?
A strong choice for
- Mission-critical enterprise storage
- High-availability environments requiring controller redundancy
- Virtualisation storage deployments
- Large-file sharing over 10GbE SFP+
- Organisations using the supplied QES data services
Consider another model if you need
- A compact tower or short-depth rackmount NAS
- SATA rather than the supplied SAS drive compatibility
- An unmanaged or simple plug-and-play storage appliance
- USB ports for external storage devices or a UPS
Key specifications
- Processor
- Intel® Xeon® D-2123IT 4-core 2.20 GHz processor (burst up to 3.0 GHz) per controller
- System memory
- 32 GB RDIMM DDR4 ECC (4x 8 GB) per controller
- Maximum memory
- 512 GB (8 x 64GB)
- Drive bays
- 16 x 3.5-inch
SAS 12Gb/s, backward-compatible to SAS 6Gb/s - Drive compatibility
- 3.5-inch bays:
3.5-inch SAS hard disk drives
2.5-inch SAS hard disk drives
2.5-inch SAS solid state drives - 10GbE networking
- 4 x 10GbE SFP+ for each controller
- PCIe slots
- 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. - Form factor
- 3U Rackmount
- Dimensions
- 132 × 446.2 × 587.75 mm
- Warranty
- 5 (unit not stated in supplied source)
Full technical specifications
View all supplied technical specifications
| 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 | Supported |
| Encryption Engine | Supported (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 hard disk drives 2.5-inch SAS hard disk drives 2.5-inch SAS solid state drives |
| Hot-swappable | Supported |
| SSD Cache Acceleration Support | Supported 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 (assign one for remote management) |
| 10 Gigabit Ethernet Port | 4 x 10GbE SFP+ for each controller |
| Wake on LAN (WOL) | Supported |
| Jumbo Frame | Supported |
| 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;700W |
| 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) EN60950 BSMI VCCI CB LVD |
Frequently asked questions about the QNAP ES1686dc-R2-2123IT-64G
What is the QNAP ES1686dc-R2-2123IT-64G?
The QNAP ES1686dc-R2-2123IT-64G is a 16-bay, 3U rackmount NAS with dual active-active controllers and redundant hot-swap power supplies.
What processor is supplied in the QNAP ES1686dc-R2-2123IT-64G?
The supplied specification lists Intel® Xeon® D-2123IT 4-core 2.20 GHz processor (burst up to 3.0 GHz) per controller.
How much memory is included in the QNAP ES1686dc-R2-2123IT-64G?
The supplied specification lists 32 GB RDIMM DDR4 ECC (4x 8 GB) per controller.
What drives does the QNAP ES1686dc-R2-2123IT-64G support?
The supplied drive compatibility is 3.5-inch bays:, 3.5-inch SAS hard disk drives, 2.5-inch SAS hard disk drives, 2.5-inch SAS solid state drives.
What network ports are included?
The supplied specification lists 4 x 10GbE SFP+ for each controller and 3 for each controller (assign one for remote management).
Which virtualisation platforms are listed?
The supplied content lists VMware® vSphere®, Windows Server® and Citrix® XenServer® for storage virtualisation.
Can its USB ports be used for external storage?
No. The supplied note states that the USB ports are for engineering purposes only and do not support external devices such as storage drives or a UPS.
What warranty applies to the QNAP ES1686dc-R2-2123IT-64G?
The source lists the standard warranty only as “5” and does not state the unit, so no warranty period has been assumed.
