QNAP TS-251B

Dual‑bay NAS powered by an Intel Celeron J3355, 2 GB DDR3L, offering up to 20 TB of storage with RAID0/1/JBOD support, HDMI output, USB backup, ...
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General

Brand
QNAP
Model
QNAP TS-251B-2G/20TB-ULTRA
MPN
QNAP TS-251B-2G/20TB-ULTRA

Characteristics

AC input voltage
100 - 240 V
Backup features
USB drive
Backup function
Yes
Bad block scan
Yes
Browser supported
Apple Safari 7 or later, Google Chrome, Microsoft Internet Explorer 10 or later, Mozilla Firefox
Built-in display
No
Built-in FTP server
Yes
Built-in iTunes server
Yes
Buzzer
Yes
Cable lock slot
Yes
Cable lock slot type
Kensington
Cables included
AC,LAN (RJ-45)
Chassis type
Tower
Cooling type
Active
Depth
226 mm
Device class
Home & Home Office
DHCP Client
Yes
DHCP server
Yes
ECC supported by processor
No
Embedded options available
No
Enhanced intel speedstep technology
Yes
Ethernet LAN
Yes
Ethernet LAN data rates
10,100,1000 Mbit/s
Execute disable bit
Yes
External power adapter
Yes
Fan diameter
7 cm
Flash memory
4096 MB
HDMI ports quantity
1
Height
168 mm
Hot spare
Yes
Hot-swap drive bays
Yes
Idle states
Yes
Installed storage drive type
HDD
Intel 64
Yes
Intel clear video technology
Yes
Intel enhanced halt state
Yes
Intel rapid storage technology
No
Intel secure boot
Yes
Intel smart connect technology
No
Intel trusted execution technology
No
Internal memory
2 GB
Internal memory type
DDR3L
iSCSI support
Yes
Jumbo frames support
Yes
LED indicators
HDD,LAN,Power,Status,USB
Linux operating systems supported
Yes
Management protocols
SNMP
Maximum internal memory supported by processor
8 GB
Maximum number of PCI Express lanes
6
Memory channels supported by processor
Dual
Memory types supported by processor
DDR3L,LPDDR3-SDRAM,LPDDR4-SDRAM
Microphone in
Yes
Multilingual support
Yes
Noise level
17.3 dB
On-board graphics adapter base frequency
250 MHz
On-board graphics adapter burst frequency
700 MHz
On-board graphics adapter model
Intel® HD Graphics 500
On/off switch
Yes
Operating system installed
QNAP Turbo System
Operating system version
4.3.4
PCI Express configurations
1x2+2x1,4x1
PCI Express slots version
2.0
Power supply location
External
Processor ARK ID
95597
Processor cache type
Smart Cache
Processor code
SR2Z8
Processor codename
Apollo Lake
Processor family
Intel® Celeron®
Processor frequency
2.00 GHz
Processor lithography
14 nm
Processor model
J3355
Processor operating modes
64-bit
Processor package size
24 x 31 mm
Processor socket
BGA 1296
Quick installation guide
Yes
RAID levels
0,1,JBOD
RAID support
Yes
Reset button
Yes
Security algorithms
256-bit AES,FIPS 140-2,HTTPS,SSH,SSL/TLS
Share folder
CIFS/SMB
Share folder access right management
Yes
Storage drive sizes supported
2.5,3.5"
Storage drives installed
Yes
Supported file systems
FAT32,HFS+,NTFS,exFAT,ext3,ext4
Supported storage drive interfaces
Serial ATA III
Supported storage drive types
HDD,SSD
System bus rate
5 GT/s
System log
Yes
Thermal monitoring technologies
Yes
Tjunction
105 °C
Type
NAS
UART
Yes
USB port
Yes
Wake-on-LAN ready
Yes
Wi-Fi
No
Windows operating systems supported
Windows 10,Windows 7,Windows 8
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