Dual active-active controllers
Two controller modules are supplied for the high-availability architecture.
QNAP ES1686dc-R2-2142IT-96G 16-Bay Intel® Xeon® 8-core 1.90GHz 48GB DDR4 Active-Active Dual Control
Model # ES1686dc-R2-2142IT-96G
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SKU: ES1686dc-R2-2142IT-96G
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QNAP ES1686dc-R2-2142IT-96G
QNAP ES1686dc-R2-2142IT-96G 16-Bay Active-Active Dual-Controller NAS
A 16-bay 3U high-availability QNAP ES1686dc R2 NAS with dual active-active controllers, QES, SAS 12Gb/s storage, four 10GbE SFP+ ports per controller and redundant hot-swap power.
ArchitectureDual active-active controllers
Storage16 x 3.5-inch SAS bays
Memory48GB ECC per controller
Networking4 x 10GbE SFP+ per controller
High-availability architecture
The supplied description identifies dual active-active controllers and redundant power supplies to reduce downtime and support continuity for enterprise storage operations.
QES data services
The supplied QES feature set includes ZFS near-limitless snapshots, SnapSync, block-level data deduplication and inline data compression.
Cache protection and expansion
NVRAM is stated to reduce the risk of losing write-cache data during an unexpected power failure. Each controller also has a 64GB M.2 SSD for Copy To Flash protection and two PCIe Gen 3 x8 slots.
Virtualization storage support
The supplied information lists VMware vSphere, Windows Server and Citrix XenServer for storage virtualization, with four 10GbE SFP+ ports per controller for intensive data transfer.
Important supplied operating notes
- Use only one DIMM type at a time; the supplied specification says not to mix RDIMM and LRDIMM memory.
- The USB 3.2 Gen 1 ports are stated to be for engineering purposes only; external storage devices and UPS units are not supported through those ports.
- The typical operating power figure of 500.87W was tested with drives fully populated.
Frequently asked questions
Answers below are based on the supplied information for QNAP ES1686dc-R2-2142IT-96G.
What is the QNAP ES1686dc-R2-2142IT-96G?
It is a 16-bay 3U high-availability NAS with two active-active controller modules, QES and redundant power supplies.
What processor is listed for the ES1686dc-R2-2142IT-96G?
The supplied specification lists an Intel Xeon D-2142IT 8-core 1.90GHz processor, with burst up to 3.0GHz, per controller.
How much memory is installed?
The supplied specification lists 48GB RDIMM DDR4 ECC memory per controller.
What is the maximum memory capacity?
The supplied specification lists up to 1024GB across 16 memory slots, or 512GB across 8 slots per controller.
What drive bays does this model provide?
It has 16 x 3.5-inch SAS 12Gb/s bays, backward-compatible with SAS 6Gb/s, for the supplied compatible 3.5-inch SAS HDD, 2.5-inch SAS HDD and 2.5-inch SAS SSD types.
What network ports are supplied per controller?
Each controller is listed with four 10GbE SFP+ ports and three Gigabit Ethernet RJ45 ports, with one Gigabit port assigned for remote management.
Which QES data-protection features are listed?
The supplied description lists ZFS near-limitless snapshots, SnapSync, block-level data deduplication and inline data compression.
How is write-cache data protected?
The supplied information lists NVRAM and a 64GB M.2 SSD per controller for Copy To Flash protection.
Which virtualization platforms are listed?
The supplied description lists VMware vSphere, Windows Server and Citrix XenServer for storage virtualization.
What PCIe expansion is available?
Each controller is listed with two PCIe Gen 3 x8 slots. The supplied description says these slots can be used for 10GbE or 25GbE networking cards.
Can the USB ports be used for external storage or a UPS?
No. The supplied specification states that the two USB 3.2 Gen 1 ports per controller are for engineering purposes only and do not support external storage drives or UPS units.
What manufacturer warranty applies?
The supplied specification contains a standard warranty value of 5 without stating its unit, so the customer-facing warranty information states QNAP manufacturer warranty without assigning a duration.
(ES1686dc-R2-2142IT-96G)
Features and highlights
QNAP ES1686dc-R2-2142IT-96G 16-Bay Active-Active Dual-Controller NAS
16-bay SAS storage
Sixteen 3.5-inch bays support the supplied SAS drive types at up to SAS 12Gb/s.
10GbE connectivity
Four 10GbE SFP+ ports are listed for each controller.
QES data services
The supplied QES features include snapshots, SnapSync, deduplication and inline compression.
Copy To Flash protection
A 64GB M.2 SSD per controller is listed for Copy To Flash protection.
PCIe expansion
Two PCIe Gen 3 x8 slots are listed per controller.
Key details to check before purchase
- 48GB RDIMM DDR4 ECC is listed per controller.
- Do not mix RDIMM and LRDIMM memory.
- USB 3.2 Gen 1 ports are for engineering purposes only and do not support external storage drives or UPS units.
- The supplied Standard Warranty value is 5, but its unit is not stated.
QNAP ES1686dc-R2-2142IT-96G 16-Bay Active-Active Dual-Controller NAS specifications
Technical information below is organised from the supplied product data.
| Specification | Details |
|---|---|
| Controllers, Processor and Memory | |
| Controller Modules | 2 |
| CPU | Intel Xeon D-2142IT 8-core 1.90GHz processor, burst up to 3.0GHz, per controller |
| CPU Architecture | 64-bit x86 |
| Encryption Engine | AES-NI |
| System Memory | 48GB RDIMM DDR4 ECC per controller |
| Maximum Memory | 1024GB (16 x 64GB) total; 512GB (8 x 64GB) per controller |
| Memory Slots | 16 x RDIMM/LRDIMM DDR4 total; 8 x RDIMM/LRDIMM DDR4 per controller. Use only one DIMM type at a time; do not mix RDIMM and LRDIMM. |
| Flash Memory | 4GB, dual-boot OS protection |
| Storage and Cache | |
| Drive Bays | 16 x 3.5-inch; SAS 12Gb/s, backward-compatible with SAS 6Gb/s |
| Drive Compatibility | 3.5-inch SAS hard disk drives; 2.5-inch SAS hard disk drives; 2.5-inch SAS solid state drives |
| SSD Cache Acceleration | L1 ARC read cache: RAM; L2 ARC read cache: SSD; ZIL write cache: NVRAM (C2F) |
| Copy To Flash Cache | 1 per controller, 64GB M.2 SSD |
| Networking | |
| Gigabit Ethernet | 3 x RJ45 ports per controller; one is assigned for remote management |
| 10 Gigabit Ethernet | 4 x 10GbE SFP+ ports per controller |
| Expansion and Connectivity | |
| PCIe Slots | 2 per controller: Slot 1 PCIe Gen 3 x8 (CPU); Slot 2 PCIe Gen 3 x8 (CPU). Card dimensions for slots 1-2: 215 x 68.9 x 18.76mm / 8.46 x 2.71 x 0.74 inches. Wider cards can be installed if the next PCIe slot is not used. |
| USB 3.2 Gen 1 | 2 ports per controller. The supplied note states these ports are for engineering purposes only and do not support external storage devices or UPS units. |
| Physical Specifications | |
| Form Factor | 3U rackmount |
| LED Indicators | System power LED; system status LED; two-digit LCD status display for JBOD connection status |
| Buttons | Power; Reset |
| Dimensions (H x W x D) | 132 x 446.2 x 587.75mm |
| Net Weight | 30.22kg |
| Gross Weight | 34.92kg |
| Power and Cooling | |
| Power Supply | Redundant, hot-swappable; input 90-264VAC; 700W |
| Typical Operating Power Consumption | 500.87W; tested with drives fully populated |
| Fan | Hot-swappable fan module, 60 x 60 x 38mm, 16000RPM, 12V, 2.8A x 3 |
| System Warning | Buzzer |
| Operating Environment | |
| Operating Temperature | 0-40°C (32-104°F) |
| Storage Temperature | -20-70°C (-4-158°F) |
| Relative Humidity | 5-95% RH non-condensing; wet bulb 27°C (80.6°F) |
| Warranty, Connections and Standards | |
| Standard Warranty | 5 (unit not stated in the supplied specification) |
| Maximum Concurrent CIFS Connections | 10,000 with maximum memory |
| Safety Standards | FCC Class A (USA only); CE Mark (EN55022 Class A, EN55024); EN60950; BSMI; VCCI; CB; LVD |
| SKU | ES1686dc-R2-2142IT-96G |
| Brand | QNAP |
| Shipping Weight | 35.0000kg |
QNAPManufacturer warranty
QNAP manufacturer warranty
The QNAP ES1686dc-R2-2142IT-96G is supplied with the applicable QNAP manufacturer warranty.
No warranty duration was included in the supplied product information. Warranty coverage, eligibility and claim assessment are subject to QNAP terms. Please retain your DeviceDeal tax invoice as proof of purchase.
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