About This Guide.......................................................................................................................................... 3
About the ES1686dc.....................................................................................................................................4
Front Panel...............................................................................................................................................7
Front Panel Buttons..................................................................................................................................8
Front Panel LEDs..................................................................................................................................... 8
Front Panel OLED Display....................................................................................................................... 9
System Board.........................................................................................................................................17
Setting up the NAS..................................................................................................................................... 19
CE Notice....................................................................................................................................................53
This guide provides information on the QNAP ES1686dc NAS and step-by-step instructions on installing the
hardware. It also provides instructions on basic operations and troubleshooting information.
Audience
This document is intended for storage administrators. This guide assumes that the user is knowledgeable
and qualified to install, maintain, and troubleshoot issues involving servers, server components, and storage
systems. This guide also assumes that the user is trained to recognize hazards, including the appropriate
actions the user needs to take to prevent personal injury and damage to data and property.
Document Conventions
SymbolDescription
Notes provide default configuration settings and other supplementary
information.
Important notes provide information on required configuration settings and other
critical information.
Tips provide recommendations or alternative methods of performing tasks or
configuring settings.
Warnings provide information that, when ignored, may result in potential loss,
injury, or even death.
Preface 3
ES1686dc User Guide
2. Product Overview
This chapter provides basic information about the QNAP ES1686dc NAS.
About the ES1686dc
The ES1686dc is designed to deliver a scalable platform for enterprise-level solutions. The chassis contains
two storage controllers. The left and right controllers are respectively referred to as controller A and controller
B. The system supports up to 16 storage drives. This number can be significantly increased by attaching
multiple expansion units. The ES1686dc is equipped with a powerful multi-core processor, AES-NI hardware
encryption engine, and both USB 3.0 and 10 GbE ports, allowing it to deliver optimal performance for
enterprise users. M.2 drive support and redundant storage controllers and power supplies provide the
necessary reliability, serviceability, and read/write speeds.
Hardware Specifications
Warning
If your QNAP product has hardware defects, return the product to QNAP or a QNAPauthorized service center for maintenance or replacement. Any attempt to repair or
perform maintenance procedures on the product by you or an unauthorized third-party
invalidates the warranty.
QNAP is not responsible for any damage or data loss caused by unauthorized
modifications and installation of unsupported third-party applications.
For details, see the QNAP Warranty Terms and Conditions.
Ordering P/NCPUMemoryPower supply
ES1686dc-2123IT-64G
ES1686dc-2145NT-96G
ES1686dc-2145NT-128G
ComponentES1686dc-2123IT-64G
Processor
CPU
Frequency4-core/8-thread 2.2 GHz base/3.0
Architecturex86 64-bit
Encryption engineAES-256
Memory
Intel® Xeon™ D-2123IT
Intel® Xeon™ D-2145NT
Intel® Xeon™ D-2145NT
Intel® Xeon™ D-2123ITIntel® Xeon™ D-2145NT
GHz turbo
64 GB (32 GB per
controller)
96 GB (48 GB per
controller)
128 GB (64 GB
per controller)
Redundant
Redundant
Redundant
ES1686dc-2145NT-96G
ES1686dc-2145NT-128G
8-core/16-thread 1.9 GHz base/3.0
GHz turbo
Product Overview 4
ES1686dc User Guide
ComponentES1686dc-2123IT-64G
ES1686dc-2145NT-96G
ES1686dc-2145NT-128G
Memory slots8 x DDR4 RDIMM or LRDIMM slots per controller
Important
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.
Using unsupported modules may degrade
performance, cause errors, or prevent the operating
system from starting.
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.
Maximum memory512 GB RAM: 8 x 64 GB
Flash memory4 GB (dual boot OS protection)
Cache for Copy to Flash64 GB per controller
Storage
Drive bays16 x 3.5-inch SAS 12 Gbps
Note
The interface is backward compatible to SAS 6 Gbps.
Drive compatibility• 3.5-inch SATA hard disk drives
• 3.5-inch SAS hard disk drives
• 2.5-inch SATA hard disk drives
• 2.5-inch SATA solid-state drives
• 2.5-inch SAS hard disk drives
• 2.5-inch SAS solid-state drives
M.2 SSD slots2 x M.2 SSD slots per controller
Note
These slots support SATA 6 Gbps and PCIe Gen 3 x4
NVMe SSDs.
M.2 SSD form factor2280
SSD cache acceleration support• 3.5-inch drive bays 1 to 16
• M.2 SSD slots 1 to 2
• Optional: M.2 SSD slots on an M.2 SSD expansion card
Network
10 Gigabit Ethernet ports4 x 10 GbE SFP+ ports per controller
Gigabit Ethernet ports3 x GbE RJ45 ports per controller
External I/O Ports & Expansion Slots
Product Overview 5
ES1686dc User Guide
ComponentES1686dc-2123IT-64G
PCIe slots2 x PCIe 3.0 x8 slots per controller
Tip
For the list of compatible expansion cards, go to
https://www.qnap.com/compatibility.
USB ports2 x USB 3.0 Type-A ports per controller
Interface
ButtonsNAS
• Power
Storage Controllers
• Power
• Reset
Dimensions
Form factor3U Rackmount
Dimensions (H x W x D)132 x 483.05 x 630.62 mm
(5.20 x 19.02 x 24.83 in)
Net weight25.83 kg (56.95 lbs)
Others
Rail compatibilityRAIL-E02
ES1686dc-2145NT-96G
ES1686dc-2145NT-128G
Note
Information on rail kit installation can be found in the
installation guide included in the rail kit package.
Power supply unit2 x 770W, 90-264V AC, 50/60 Hz
System batteryCR2032 lithium battery (3V, 225 mAh)
Warning
To avoid potential battery explosion, causing injury or
damage to components, ensure that you replace the
existing battery with a battery of the same type.
Important
Dispose of used batteries according to local
regulations or the instructions of the battery
manufacturer.
Hot-swappable battery backup unit 2 x 10.8V, 2200 mAh
Sound level55.8 db(A)
Note
The sound level was tested at a bystander position,
which is within one meter of the NAS. The test NAS
operated at low speed with the maximum number of
drives installed.
Product Overview 6
ES1686dc User Guide
ComponentES1686dc-2123IT-64G
Hot-swappable fan moduleSystem: 60 x 60 x 38 mm, 12V DC
Warning
To avoid potential injury or damage to components, do
not touch the fans while the NAS is connected to a
power source.
To ensure proper cooling, replacement of the fan
should be completed within 10 seconds.
Operating temperature0˚C to 40˚C (32˚F to 104˚F)
Relative humidity• Non-condensing relative humidity: 5% to 95%
• Wet-bulb temperature: 27˚C (80.6˚F)
Tip
Model specifications are subject to change without prior notice. To see the latest
specifications, go to https://www.qnap.com.
ES1686dc-2145NT-96G
ES1686dc-2145NT-128G
Package Contents
ItemQuantity
ES1686dc NAS1
Power cord2
Ethernet cable6
Screws for 2.5-inch drives64
Screws for 3.5-inch drives64
Screws for M.2 SSDs4
RAIL-E02 rail kit1
Quick Installation Guide (QIG)1
Components
Front Panel
Product Overview 7
ES1686dc User Guide
No.ComponentNo.Component
1OLED display5Drive activity LED
2System power LED6OLED button
3Status LED7Power button
4Drive status LED--
Front Panel Buttons
OperationUser ActionResult
Power on NASPress the power button.Both storage controllers power on.
Important
This button can only be
used to power on the two
storage controllers. Use
the respective rear panel
storage controller power
button to power off the
storage controllers.
Power on OLED displayPress the OLED button.The OLED display powers on.
Power off OLED displayPress the OLED button.The OLED display powers off.
Front Panel LEDs
The front panel LEDs indicate system status and related information when the NAS is powered on. The
following LED information applies only when the drive is correctly installed and when the NAS is connected
to the network.
For details on the location of the LEDs, see Front Panel.
Product Overview 8
LEDStatusDescription
System powerBlueSystem powered on
System statusGreenSystem operating correctly
Red• There are system errors or warnings (e.g. degraded
RAID mode, memory failure, fan/power supply failure,
system/disk temperature too high, storage pool
reaching threshold value) recorded in the system logs
of the QES to notify the system administrator. The
errors need to be corrected.
• The system is performing takeover. The dual activeactive controller system enables a single controller to
take over the pool disk resources owned by the other
controller in the event of a controller failure. Takeovers
can be initiated manually or be set up with the
automatic system failover protection. For more
information, refer to the QES user guide.
• Power supply unit unplugged
Drive statusGreenDrive can be accessed
Flashing green slowlyThe Locate command, which helps identify the drive, is
being executed in the Storage Manager on QES.
RedDrive read/write error
OffDrive not installed
Drive activityFlashing green continuously
No drive activity
or slowly
Flashing greenHigh activity on drive or drive being configured as part of
an array
ES1686dc User Guide
Front Panel OLED Display
The OLED display provides a quick understanding of the storage controllers and main component status.
For details on the location of the OLED display, see Front Panel.
Icon nameIconDescription
Controller power
status
• Icon lit: Both controllers powered on
• Icon flashing: Both controllers booting
• Icon lit: Only controller A powered on
• Icon flashing: Controller A booting
• Icon lit: Only controller B powered on
• Icon flashing: Controller B booting
Product Overview 9
ES1686dc User Guide
Icon nameIconDescription
Controller fan status• Icon lit: Fan module in both controllers operating
correctly
• Icon flashing: Fan module in both controllers operating
incorrectly or not installed
If both controllers installed:
• Icon flashing: Fan module in controller A operating
incorrectly or not installed
If only controller A installed:
• Icon lit: Fan module in controller A operating correctly
• Icon flashing: Fan module in controller A operating
incorrectly or not installed
If both controllers installed:
• Icon flashing: Fan module in controller B operating
incorrectly or not installed
If only controller B installed:
• Icon lit: Fan module in controller B operating correctly
• Flashing: Fan module in controller B operating
incorrectly or not installed
Product Overview 10
Icon nameIconDescription
Controller battery
• Icon lit: BBU in both controllers operating correctly
backup unit
• Icon flashing: BBU in both controllers operating
incorrectly
• Icon highlighted: BBU in both controllers charging
• Icon unlit: BBU in both controllers not detected
If both controllers powered on:
• Icon flashing: BBU in controller A operating incorrectly
or not detected
• Icon highlighted: BBU in controller A charging
If only controller A powered on:
• Icon lit: BBU in controller A operating correctly
• Icon flashing: BBU in controller A operating incorrectly
or not detected
ES1686dc User Guide
• Icon highlighted: BBU in controller A charging
If both controllers powered on:
• Icon flashing: BBU in controller B operating incorrectly
or not detected
• Icon highlighted: BBU in controller B charging
If only controller B powered on:
• Icon lit: BBU in controller B operating correctly
• Icon flashing: BBU in controller B operating incorrectly
or not detected
• Icon highlighted: BBU in controller B charging
High availability status• Icon lit: Active state
• Icon flashing: Performing take-over or undergoing giveback
Icon highlighted: Controller A in take-over state
Icon highlighted: Controller B in take-over state
Product Overview 11
ES1686dc User Guide
Icon nameIconDescription
Two-digit displayThe two-digit display shows the booting status of the
storage controllers. The left digit is the status of controller A,
and the right digit is the status of controller B. The following
list explains the meaning of each digit. (Refer to the High
Availability app of QES to view the components and their
denoted names.)
• No Display: BIOS booting
• 1: Device detecting
• 2: Network settings
• 3: System settings
• 4: Service start
• 5: System self-testing
• 8: System initializing
Rear Panel
• 0: System ready
Product Overview 12
ES1686dc User Guide
No.ComponentNo.Component
1Power supply unit9Battery backup unit
2Ethernet port 6 (10 GbE SFP+)10Power button
3Ethernet port 4 (10 GbE SFP+)11Service port
4Ethernet port 2 (GbE RJ45)12Ethernet port 5 (10 GbE SFP+)
5Ethernet port 1 (GbE RJ45, management
13Ethernet port 7 (10 GbE SFP+)
port)
6Reset button14PCIe 3.0 slot 1 (x8)
7USB 3.0 Type-A ports15PCIe 3.0 slot 2 (x8)
8Ethernet port 3 (GbE RJ45)--
Product Overview 13
Rear Panel LEDs
ES1686dc User Guide
No.ComponentNo.Component
1Power supply LED6Battery backup unit status LED
2Battery backup unit LED7Fan status LED
3Gigabit Ethernet LED (port speed)8Status LED
4Gigabit Ethernet LED (port activity)910 Gigabit Ethernet LED (port activity)
5High availability LED1010 Gigabit Ethernet LED (port speed)
The following LED information applies only when the drive is correctly installed and when the NAS is
connected to the network.
LEDStatusDescription
Power supply
Green• Powered on
unit
• Power supply functioning correctly
Flashing greenSystem off
OrangeAC power cord unplugged or abnormal
No colorOne or more of the following conditions exist:
• AC power unavailable
• Power supply failed
Battery backup
unit
GreenFunctioning normally
RedMalfunctioning
OrangeCharging or learning
No colorNot correctly attached to the ES1686dc
StatusGreenSystem operating correctly
Flashing greenSystem booting
No colorSystem powered off
Product Overview 14
LEDStatusDescription
FanGreenFunctioning correctly
OrangeMalfunctioning
No colorFans not detected
Battery backup
unit status
GreenFunctioning correctly
OrangeWriting buffer for Copy to Flash
No colorOne or more of the following conditions exist:
• Storage controller is powered off
• System cannot detect battery backup unit
High availabilityGreenActive State
Flashing orangeOne of the following:
• Performing takeover: The dual active-active controller
system enables a controller to take over the pool disk
resources and access the data upon the failure of the
other controller. Takeovers can be initiated manually or
be set up with the automatic system failover protection.
For more details, refer to the QES user guide.
ES1686dc User Guide
10 Gigabit
Ethernet port
speed
10 Gigabit
Ethernet port
activity
1 Gigabit
Ethernet port
activity
1 Gigabit
Ethernet port
speed
• Undergoing giveback: One of the storage controllers
has taken over the system. The other storage
controller has resumed operations and is ready to
resume data service. Giveback can be initiated
manually or be set up with automatic failback after
system recovers. For more details, refer to the QES
user guide.
OrangeStorage controller has taken over from the other storage
controller
No colorOne or more of the following conditions exist:
• Storage controller failed
• Storage controller is powered off
Green10 GbE connection
Orange1 GbE connection
No color100 Mbps connection
GreenNetwork link active
Flashing greenNetwork link active
No colorNo network link
GreenNetwork link established
Flashing greenNetwork link active
No colorNo network link
Green1 GbE connection
Orange100 Mbps connection
Product Overview 15
ES1686dc User Guide
Storage Controller Power Button
OperationUser ActionResult
Power onPress the button once.The storage controller powers on.
Power offPress and hold the button for 5
seconds.
Force power offPress and hold the button for 10
seconds.
The storage controller powers off.
The storage controller shuts down.
Important
Use this method only
when the storage
controller is
unresponsive.
Reset Button
OperationUser ActionResult
Basic system resetPress and hold the
button for 3 seconds.
The following settings are reset to default:
• System administrator password: admin
Advanced system
reset
Press and hold the
button for 10 seconds.
• TCP/IP configuration:
• Obtain IP address settings automatically via
DHCP
• Disable jumbo frames
• If port trunking is enabled (multi-LAN models
only), the port trunking mode is reset to “Active
Backup (Failover)”.
• System port: 8080 (system service port)
• Security level: Low (Allow all connections)
• LCD panel password: (blank)
• VLAN: Disabled
• Service binding: All NAS services can run on all
available network interfaces.
The default factory settings are restored.
To retrieve old data after an advanced system reset,
recreate the previous folder structure on the NAS.
Product Overview 16
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