QNAP TS-251B User manual

TS-251B
User Guide
Document Version: 3
23/07/2018

Contents
1. Preface
About This Guide.......................................................................................................................................... 3
Audience.......................................................................................................................................................3
Document Conventions................................................................................................................................ 3
2. Product Overview
About the TS-251B....................................................................................................................................... 4
Hardware Specifications............................................................................................................................... 4
Package Contents........................................................................................................................................ 6
Components................................................................................................................................................. 6
Front Panel...............................................................................................................................................7
Rear Panel................................................................................................................................................7
Left Panel................................................................................................................................................. 8
Drive Numbering.......................................................................................................................................9
Installation Requirements............................................................................................................................. 9
Setting Up the NAS.......................................................................................................................................9
3. Installation and Configuration
Hardware Installation.................................................................................................................................. 11
Drive Installation..................................................................................................................................... 11
Installing Expansion Cards.....................................................................................................................19
Replacing Memory Modules...................................................................................................................26
QTS Installation.......................................................................................................................................... 33
Installing QTS Using Qfinder Pro........................................................................................................... 34
Installing QTS Using the Cloud Key....................................................................................................... 35
Installing QTS Using an HDMI Connection............................................................................................ 37
4. Basic Operations
Power Button.............................................................................................................................................. 39
Reset Button............................................................................................................................................... 39
USB One Touch Copy Button..................................................................................................................... 39
LEDs........................................................................................................................................................... 40
Beep Alarm................................................................................................................................................. 41
5. Troubleshooting
Forcing Qfinder Pro or myQNAPcloud to Locate the NAS......................................................................... 42
Hot-swapping Failed Drives........................................................................................................................42
Recovering Unintentionally Removed Healthy Drives................................................................................ 42
Support and Other Resources.................................................................................................................... 43
6. Glossary
CloudKey.................................................................................................................................................... 44
CloudLink....................................................................................................................................................44
myQNAPcloud............................................................................................................................................ 44
myQNAPcloud ID........................................................................................................................................44
Qfinder Pro................................................................................................................................................. 44
QTS.............................................................................................................................................................44
7. Notices
Limited Warranty.........................................................................................................................................45
TS-251B User Guide
1

Disclaimer................................................................................................................................................... 45
GNU Public License....................................................................................................................................45
FCC Notice................................................................................................................................................. 53
CE Notice....................................................................................................................................................53
SJ/T 11364-2006.........................................................................................................................................54
2

1. Preface
About This Guide
This guide provides information on the QNAP TS-251B 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 consumers and storage administrators. This guide assumes that the user has
a basic understanding of storage and backup concepts.
Document Conventions
Symbol Description
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.
TS-251B User Guide
Preface 3

2. Product Overview
This chapter provides basic information about the QNAP TS-251B NAS.
About the TS-251B
The TS-251B is powered by an Intel® Celeron® J3355 dual-core 2.0 GHz processor with burst frequency of
up to 2.5 GHz. The TS-251B supports up to 8 GB of DDR3L RAM and features USB One Touch Copy, a
Gigabit LAN port, and a PCIe slot. With a hardware-accelerated encryption engine, the TS-251B ensures the
security of sensitive data and protects any important information that is stored on the NAS.
Hardware Specifications
Important
Modifying the hardware or software of your QNAP product invalidates the warranty. QNAP
is not responsible for any damage or data loss caused by unauthorized modifications and
installation of unsupported third-party accessories or applications.
Component TS-251B
Ordering Information
Ordering P/N • TS-251B-2G
• TS-251B-4G
Processor
CPU Intel® Celeron® J3355
Frequency Dual-core 2.0 GHz base/2.5 GHz turbo
Architecture 64-bit x86
Encryption engine AES-NI
Memory
Pre-installed memory • 2 GB RAM: 1 x 2 GB DDR3L
• 4 GB RAM: 1 x 4 GB DDR3L
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.
Total memory slots 2 x SODIMM DDR3L
Maximum memory 8 GB RAM: 2 x 4 GB
Flash memory 4 GB eMMC
Storage
Drive bays • 2 x 3.5-inch SATA 6 Gbps
TS-251B User Guide
Product Overview 4

Component TS-251B
Drive compatibility • 3.5-inch SATA hard disk drives
• 2.5-inch SATA hard disk drives
• 2.5-inch SATA solid-state drives
Hot-swappable Yes
M.2 SSD type Optional: QNAP QM2 PCIe expansion card
SSD cache acceleration support Yes
Note
• SSD cache drives are not hot-swappable.
• M.2 SSDs are not hot-swappable.
• SSDs using PCIe expansion slots are not hot-
swappable.
Network
Gigabit Ethernet ports 1 x Gigabit RJ45
External I/O Ports & Expansion Slots
PCIe slots 1 x PCIe 2.0 x2
USB ports • Front: 1 x USB 3.0 Type-A
Note
You can use the One Touch Copy button with this port.
• Rear: 4 x USB Type-A:
• 3 x USB 2.0 Type-A
• 1 x USB 3.0 Type-A
HDMI outputs 1 x HDMI v1.4b (Supports up to 3840 x 2160 @ 30 Hz)
Audio • 2 x 3.5 mm dynamic microphone jacks
• 1 x 3.5 mm line-out jack
• 1 x speaker
Note
You cannot use the speaker and the line-out jack
simultaneously.
Interface
Buttons • Power
• Reset
• USB One Touch Copy
IR sensor 1
Note
The QNAP RM-IR004 remote control is an optional
separate purchase.
TS-251B User Guide
Product Overview 5

Component TS-251B
Dimensions
Form factor Tower
Dimensions (H x W x D) 168 x 105 x 226 mm (6.62 x 4.13 x 8.90 in)
Net weight 1.53 kg (3.37 lbs)
Other
Power supply unit 65W, 100-240V AC, 50/60 Hz
System battery CR2032 lithium battery (3V, 225 mAh)
Warning
To avoid potential injury or damage to components,
make sure to replace the existing battery with a battery
of the same type.
Sound level 17.3 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.
Fans System: 1 x 70 mm
Warning
To avoid potential injury or damage to components, do
not touch the fan while the NAS is connected to a
power source.
Operating temperature 0˚C to 40˚C (32˚F to 104˚F)
Relative humidity • Non-condensing relative humidity: 5% to 90%
• Wet-bulb temperature: 27˚C (80.6˚F)
Security slot Kensington security slot
Tip
Model specifications are subject to change without prior notice. To see the latest
specifications, go to https://www.qnap.com.
Package Contents
Item Quantity
TS-251B NAS 1
AC power adapter 1
Power cord 1
Ethernet cable 1
Screws for 3.5-inch drives 8
Screws for 2.5-inch drives 6
Quick Installation Guide (QIG) 1
Components
TS-251B User Guide
Product Overview 6

Front Panel
No. Component No. Component
1 Power button 5 Drive 1 LED
2 Status LED 6 Drive 2 LED
3 LAN LED 7 USB One Touch Copy port
4 USB LED 8 USB One Touch Copy button
Rear Panel
No. Component No. Component
1 Speaker 7 HDMI 1.4b port
TS-251B User Guide
Product Overview 7

No. Component No. Component
2 Kensington security slot 8 3.5 mm line-out jack
3 Power input 9 3.5 mm dynamic microphone jacks
4 USB 2.0 Type-A ports 10 Reset button
5 USB 3.0 Type-A port 11 PCIe low-profile cover
6 Gigabit Ethernet RJ45 port - -
Left Panel
No. Component No. Component
1 PCIe 2.0 x2 slot 3 Memory slot 2
2 Memory slot 1 - -
TS-251B User Guide
Product Overview 8

Drive Numbering
Installation Requirements
Category Item
Environment • Room temperature: 0˚C to 40˚C (32˚F to 104˚F)
• Non-condensing relative humidity: 5% to 95%
• Wet-bulb temperature: 27˚C (80.6˚F)
• Flat, anti-static surface with no exposure to direct sunlight, liquids,
or chemicals
Hardware and peripherals • Storage drives
For details on compatible drives, go to https://www.qnap.com/
compatibility/.
• Network cable
Tools • Phillips #1 or #2 screwdriver
• Anti-static wrist strap
Setting Up the NAS
1. Place your NAS device in an environment that meets the requirements.
For details, see Installation Requirements.
2. Install the drives.
For details, see the following topics:
•Installing 3.5-inch Hard Drives on 3.5-inch Trays
•Installing 2.5-inch Drives on 3.5-inch Trays
3. Connect the power cord and all applicable cables.
TS-251B User Guide
Product Overview 9

4. Power on the NAS.
5. Install QTS.
For details, see QTS Installation.
6. Log on to QTS.
TS-251B User Guide
Product Overview 10

3. Installation and Configuration
This chapter provides specific hardware and firmware installation and configuration steps.
Hardware Installation
This section provides information on installing drives, memory modules, and expansion cards.
Drive Installation
The TS-251B is compatible with 3.5-inch and 2.5-inch hard drives and 2.5-inch solid-state drives.
Installing 3.5-inch Hard Drives on 3.5-inch Trays
Warning
• Installing a drive deletes all data on the drive.
• Observe electrostatic discharge (ESD) procedures to avoid damage to components.
1. Power off the NAS.
2. Remove the front cover.
a. Locate the lock on the left side of the NAS.
b. Slide the lock down to release the cover.
c. Slide the cover to the left.
d. Remove the cover.
TS-251B User Guide
Installation and Configuration 11

3. Remove a drive tray by simultaneously pressing the latch and pulling the tray.
4. Install a drive on the tray.
a. Remove the fastening panels from the sides of the drive tray.
TS-251B User Guide
Installation and Configuration 12

b. Place the drive on the tray so that the holes on the sides of the drive are aligned with the holes on
the sides of the tray.
c. Attach the fastening panels to lock the drive to the tray.
d. Optional: Attach screws to further secure the drive.
TS-251B User Guide
Installation and Configuration 13

5. Slide the tray into the drive bay.
6. Attach the front cover.
a. Align the cover with the grooves on the case.
b. Slide the cover to the right.
TS-251B User Guide
Installation and Configuration 14

c. Slide the lock up.
7. Power on the NAS.
Installing 2.5-inch Drives on 3.5-inch Trays
Warning
• Installing a drive deletes all data on the drive.
• Observe electrostatic discharge (ESD) procedures to avoid damage to components.
1. Power off the NAS.
2. Remove the front cover.
TS-251B User Guide
Installation and Configuration 15

a. Locate the lock on the left side of the NAS.
b. Slide the lock down to release the cover.
c. Slide the cover to the left.
d. Remove the cover.
3. Remove a drive tray by simultaneously pressing the latch and pulling the tray.
TS-251B User Guide
Installation and Configuration 16

4. Install a drive on the tray.
a. Remove the right fastening panel from the drive tray.
b. Place the drive on the tray so that the holes on the bottom of the drive are aligned with the holes
on the bottom of the tray.
c. Attach the screws to the drive.
TS-251B User Guide
Installation and Configuration 17

5. Slide the tray into the drive bay.
6. Attach the front cover.
a. Align the cover with the grooves on the case.
b. Slide the cover to the right.
TS-251B User Guide
Installation and Configuration 18

c. Slide the lock up.
7. Power on the NAS.
Installing Expansion Cards
The TS-251B supports selected expansion cards, some of which require QNAP PCIe brackets. QNAP-
branded expansion cards purchased from the company website are shipped with the brackets necessary to
fit all QNAP NAS models. The TS-251B series uses low-profile flat brackets.
Warning
• Only qualified personnel should perform the following steps. Failure to follow
instructions can result in serious injury or death.
TS-251B User Guide
Installation and Configuration 19