QNAP TS-251D User Manual

Contents
1. Preface
About This Guide.......................................................................................................................................... 3
Audience.......................................................................................................................................................3
Document Conventions................................................................................................................................ 3
2. Product Overview
About the TS-251D....................................................................................................................................... 4
Hardware Specifications............................................................................................................................... 4
Package Contents........................................................................................................................................ 6
Components................................................................................................................................................. 7
Front Panel...............................................................................................................................................7
Left Panel................................................................................................................................................. 8
Rear Panel................................................................................................................................................8
Drive Numbering.......................................................................................................................................9
Safety Information.........................................................................................................................................9
Installation Requirements........................................................................................................................... 10
Setting Up the NAS.....................................................................................................................................10
3. Installation and Configuration
Hardware Installation.................................................................................................................................. 12
Drive Installation.....................................................................................................................................12
Installing Expansion Cards.....................................................................................................................20
Replacing Memory Modules...................................................................................................................26
QTS Installation.......................................................................................................................................... 32
Installing QTS Using Qfinder Pro........................................................................................................... 32
Installing QTS Using the Cloud Key....................................................................................................... 33
Installing QTS Using an HDMI Connection............................................................................................ 35
4. Basic Operations
Power Button.............................................................................................................................................. 36
Reset Button............................................................................................................................................... 36
USB One Touch Copy Button..................................................................................................................... 36
LEDs........................................................................................................................................................... 37
Audio Alert.................................................................................................................................................. 38
5. Troubleshooting
Forcing Qfinder Pro or myQNAPcloud to Locate the NAS......................................................................... 39
Hot-Swapping Failed Drives....................................................................................................................... 39
Recovering Unintentionally Removed Healthy Drives................................................................................ 39
Support and Other Resources.................................................................................................................... 40
6. Glosssary
CloudKey.................................................................................................................................................... 41
myQNAPcloud Link.....................................................................................................................................41
myQNAPcloud............................................................................................................................................ 41
myQNAPcloud ID........................................................................................................................................41
Qfinder Pro................................................................................................................................................. 41
QTS.............................................................................................................................................................41
7. Notices
TS-251D User Guide
1

QNAP TS-251D Specifications

General

Type	NAS
Noise level	16.7 dB
Device class	Home & Home Office
Share folder	CIFS/SMB, FTP, WebDAV
Backup features	Cloud, USB drive
Backup function	Yes
Browser supported	Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox
Security algorithms	256-bit AES, FIPS 140-2, SNMPv3, SSH, SSL/TLS
Storage temperature (T-T)	-20 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Operating relative humidity (H-H)	5 - 95 %
Chassis type	Tower
Cooling type	Active
Fan diameter	70 mm
Product color	White
LED indicators	HDD, LAN, Power, Status, USB
Number of fans	1 fan(s)
Cable lock slot type	Kensington
Fiber ports quantity	0
USB 2.0 ports quantity	3
USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity	2
Wi-Fi	No
Ethernet LAN data rates	1000 Mbit/s
Supported network protocols	TCP/IP, PTP, L2TP/IPSec, OpenVPN, QBelt(, FTP, SFTP, TFTP
Flash memory	4000 MB
Internal memory	4 GB
Memory form factor	SO-DIMM
Internal memory type	DDR4
Maximum RAM supported	8 GB
Cables included	AC, LAN (RJ-45)
Number of screws	14
Tjunction	105 °C
Processor cache	4 MB
Processor model	J4005
System bus rate	- GT/s
Processor family	Intel® Celeron®
Processor socket	BGA 1090
Processor codename	Gemini Lake
Processor frequency	2 GHz
Processor lithography	14 nm
Processor manufacturer	Intel
Processor package size	25 x 24 mm
Processor boost frequency	2.7 GHz
Processor operating modes	64-bit
PCI Express configurations	1x2, 1x2+2x1, 1x4, 2x1, 4x1
Thermal Design Power (TDP)	10 W
On-board graphics card model	Intel® UHD Graphics 600
Fan voltage	12 V
AC input voltage	100 - 240 V
AC input frequency	50 - 60 Hz
Power supply location	External
Power consumption (sleep)	8.08 W
Power consumption (typical)	15.25 W
Power supply unit (PSU) capacity	65 W
Operating system version	5.0.0
Operating system installed	QNAP QTS
Mac operating systems supported	Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave, Mac OS X 10.15 Catalina, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Server operating systems supported	Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, Windows Server 2019
Windows operating systems supported	Windows 10, Windows 7, Windows 8
RAID levels	0, 1, JBOD
Storage drive size	- \
Storage drive capacity	0 GB
Supported file systems	FAT32, HFS+, NTFS, ext3, ext4
Storage drive interface	-
Storage drive sizes supported	3.5 \
Supported storage drive types	HDD & SSD
Total installed storage capacity	0 TB
Supported storage drive interfaces	Serial ATA II, Serial ATA III
Number of execution units	12
Maximum number of PCI Express lanes	6
Memory types supported by processor	DDR4-SDRAM, LPDDR4-SDRAM
Intel Smart Response Technology version	0.00
Intel Identity Protection Technology version	1.00
On-board graphics card ID	0x3185
On-board graphics card base frequency	250 MHz
On-board graphics card DirectX version	12.0
On-board graphics card dynamic frequency (max)	700 MHz
Processor ARK ID	128992
Harmonized System (HS) code	84714100

Weight and Dimensions

Depth	226 mm
Width	105 mm
Height	168 mm
Weight	1480 g
Package weight	2580 g