All stock codes associated to this product
TS251B4G, TS-251B-4G, QN17578
Qnap TS-251B-4G 2-Bay NAS System - Diskless, Tower
The TS-251B combines secure data storage and multimedia entertainment into
one device. Featuring a PCIe slot, the TS-251B is QNAPs first home/SOHO NAS that
allows you to flexibly extend its functionality and potential applications. You
can install a QNAP QM2 card to provide M.2 SSD caching/10GbE connectivity and
use with Qtier auto-tiering storage to enhance overall system performance; or
install a wireless network card (such as the QNAP QWA-AC2600) to turn the
TS-251B into a wireless access point and to wirelessly stream your multimedia
throughout your home. The TS-251B supports dual-channel H.264 hardware decoding
and transcoding, allowing you to enjoy watching NAS media files smoothly across
various devices.
The PCIe port supports installing a 10GbE network card, a QM2 dual-port M.2
SSD/10GbE card, a USB 3.1 Gen 2 (10Gbps) card, or a wireless network card.
4K media playback and online transcoding; cross-device multimedia viewing via
HDMI output or streaming applications.
Snapshots fully record the system status and data. If files are accidentally
deleted or modified, you can quickly restore the previously-recorded data.
Hybrid Backup Sync consolidates backup and sync tasks into a single app,
providing multiple layers of data protection.
Remotely access the apps and files on your TS-251B via myQNAPcloud and easily
manage and share files.
Supports containerized applications and hosting virtual machines with various
operating systems.
Intel Celeron J3355 dual-core 2.0 GHz processor (burst up to 2.5 GHz) with
4GB RAM (1 x 4GB)
Intel Celeron J3355 dual-core processor and AES-NI hardware
encryption
File Transfer (1 x 10GbE)
Windows Download
647 MB/s
Windows Upload
519 MB/s
File Transfer with Encryption (1 x 10GbE)
Windows Download
615 MB/s
Windows Upload
320 MB/s
Sequential Throughput (1 x 10GbE, 64KB)
Windows Download
672 MB/s
Windows Upload
435 MB/s
Powered by a 14nm Intel Celeron J3355 dual-core 2.0GHz processor (burst up to
2.5 GHz), 2GB/4GB DDR3L RAM (up to 8GB), a single Gigabit LAN port, and
supporting SATA 6Gb/s hard drives, the TS-251B provides dependable performance
of up to 672 MB/s read/write speeds. The TS-251B features Intel AES-NI
hardware-accelerated encryption for both full NAS volumes and shared folders,
boosting system performance while ensuring the security of sensitive data stored
in the TS-251B.
Extend NAS functionality with the PCIe slot
With a PCIe expansion slot, the TS-251B provides flexibility in extending NAS
functionality and potential applications. Install a QNAP QM2 card to provide M.2
SSD caching/10GbE connectivity and use with Qtier tiered storage for optimal
system performance; use the TS-251B as a wireless access point by installing a
compatible wireless network card (such as the QNAP QWA-AC2600) to create a
wireless media streaming environment; or boost the USB connectivity of the
TS-251B by installing a USB 3.1 Gen 2 (10Gbps) card.
A tailor-made private wireless network that meets your needs
By installing the QWA-AC2600 and WirelessAP Station app, your NAS will evolve
into a high-performance wireless access point that can be connected to from
multiple devices. The QWA-AC2600 can also be used to extend your wireless
network coverage. Combined with useful features (including DHCP and NAT)
provided by the Network and Virtual Switch app, the QWA-AC2600 can be used for a
variety of applications, delivering private, fast, low-latency and secure
connectivity across your home and/or workplace. (WirelessAP Station requires
Container Station to be installed on your QNAP NAS.)
Directly access your NAS
With the QWA-AC2600 and the WirelessAP Station app, your NAS can perform as a
high-performance wireless access point that can be accessed by multiple devices.
Your devices can directly access data stored on the NAS and in bypassing the
router, access speeds to the network will not be affected.
Upgrade your network to 10GbE with QNAP's fast and affordable 10GbE
Switch
QNAP 10GbE/NBASE-T unmanaged switches allow you to instantly upgrade your
network environment at a cost-effective price. With a 10GbE network you can
enjoy blazing-fast transfer speeds, empower bandwidth-demanding tasks like
virtualization, and enable simultaneous real-time access to large NAS-based
files using multiple workstations (ideal for video editing and multimedia). QNAP
also provides a 10GbE PCIe network expansion card for the TS-251B and
Windows/Linux PCs to take advantage of high-speed LAN environments.
Real-time 4K video transcoding
Featuring advanced Intel HD Graphics, the TS-251B supports dual-channel 4K
H.264 hardware decoding and real-time transcoding, allowing you to convert
videos to universal file formats that can be smoothly played across various
devices*. You can also watch high-quality 4K@30FPS media files on a HDTV using
the HDMI output or use with Plex Media Server to stream media files to mobiles
devices and media streaming devices (including DLNA, Roku, Apple TV, Amazon Fire
TV and Chromecast). The QNAP RM-IR004 remote control (sold separately) can be
configured using QButton to customize the actions of individual buttons,
providing a more convenient NAS experience.
Multiple ways to enjoy your multimedia
QNAP provides a wide range of multimedia applications for you to easily enjoy
photos, music, and videos.
Cinema28 allows for single-interface management of all your media files and
can stream files to every connected device throughout your home.
QVHelper allows users to stream media files or music playlists from a QNAP
NAS to VLC player.
Qmedia allows music, photos and videos to be effortlessly streamed to Android
TVs or set-top boxes.
Video HD is a free KODI add-on that combines KODI's streaming and video
decoding capabilities and fully supports Video Station's features.
Protect important data with snapshots
Snapshots help protect your data by fully recording the NAS system state and
metadata. If files are accidentally deleted or modified or the system is
afflicted by ransomware, you can use snapshots to quickly restore files to a
previously-recorded state. QNAP snapshots are block-based and only record the
changed data. Not only does this save storage space but also reduces the time
required to back up and restore data. The TS-251B supports up to 1,024 snapshots
per NAS and up to 256 snapshots per volume or LUN.
Automate everyday tasks with IFTTT Agent
QNAP IFTTT Agent integrates the popular web automation service IFTTT (If This
Then That), allowing you to create a near-unlimited number of automated
workflows. Simply connect your IFTTT account with your TS-251B and set triggers
and actions. For example, if you set a trigger as Any new photo on the phone and
the action as "Upload the photo to QNAP NAS," then all the photos taken using
your phone will be automatically uploaded to TS-251B.
Multiply your productivity
The app-driven QTS operating system provides solutions for simplifying file
backup, management, search, and more. With File Station you can view and manage
your files from NAS and multiple storage devices; the OCR Converter allows you
to extract text from images; Qfiling helps automate file organization, and
Qsirch helps quickly find files.
Centralized File Management
Use File Station to directly access files on USB devices - including optical
disc drives. Files from different devices can be easily viewed and managed on a
single interface.
File Digitization
OCR Converter extracts text from images, helping to boost productivity and
making it easier to find files.
Smart Filing
Qfiling automates file organization. Files are automatically archived into
folders based on your settings.
Full-text Search
Qsirch quickly finds images, music, videos, documents, emails, and other
files.
Multi-point file backup, access and sync
The TS-251B centrally stores data and files, and supports SMB/CIFS, AFP and
NFS protocols for file sharing across Windows, Mac, and Linux/UNIX devices.
Coupled with Qsync (a utility that turns a QNAP NAS into a safe, high-capacity
data center for file synchronization) any file uploaded to the TS-251B will be
made available for all linked devices, such as computers, laptops and mobile
devices. Hybrid Backup Sync can help you easily backup or synchronize data on
the TS-251B to other QNAP NAS, remote servers, or cloud storage for easy
disaster recovery.
QVR Pro safeguards your environment
- 5,000+ compatible IP cameras
- 8 free IP camera channels
- 128 max. IP camera channels
- QUSBCam2 record from USB webcams
QNAPs QVR Pro surveillance solution allows you to arrange a dedicated,
independent storage space for surveillance data on TS-251B and leverage the
advantages of scalable storage. With QVR Pro, camera management, storage space
allocation, camera live view, and playback is greatly simplified. You can also
use USB webcams as network cameras with the QUSBCam2 app, and remotely monitor
your surveillance feeds at any time with QVR Pro Clients companion mobile app.
NAS as a Multi-OS Platform
Virtualization Station and Container Station provide comprehensive solutions
for creating virtualized environments to improve business IT infrastructure,
workflows, and productivity.
Virtualization Station
allows you to run multiple Windows, Linux, UNIX and Android virtual machines
on the TS-251B. You can use Virtual Network Computing (VNC) through a browser to
operate the virtual machines. Virtualization Station is ideal for organizations
to run multiple applications on a single NAS.
Container Station
integrates LXC and Docker lightweight virtualization technologies. You can
download apps from the built-in Docker Hub to easily import/export container
apps and manage access controls, enjoying the benefits of easy installation,
transferability and high-efficiency.
Flexible and economical storage expansion
You need an easy solution to increase storage capacity when running out of
space. QNAP provides several ways to expand your NAS storage as needed to
accommodate data and business growth.
Upgrade RAID Capacity
Hot swap lower-capacity drives with larger-capacity drives so that your QNAP
NAS can grow with your business.
VJBOD
Use VJBOD (Virtual JBOD) to expand your storage capacity by using the unused
storage of other QNAP NAS. Up to 8 QNAP NAS can be mounted as local disks on the
TS-251B.
Attach Expansion Enclosures
Connect two 2-bay TR-002 or 4-bay TR-004 USB hardware RAID external
enclosures* and use the Storage &Snapshots Manager to easily handle NAS
capacity expansion. *TR-002 and TR-004 will be available soon.
Specifications
CPU |
Intel Celeron J3355 dual-core 2.0 GHz processor (burst up to 2.5
GHz) |
|
Architecture: 64-bit x86 |
Graphics |
Intel HD Graphics 500 |
Encryption Acceleration |
(AES-NI) |
System Memory |
4 GB DDR3L (1 x 4 GB) |
Maximum Memory |
8 GB (2 x 4 GB) |
Memory Slot |
2 x SODIMM DDR3L up to 1866, with dual-channel
support |
Flash Memory |
4GB eMMC |
Drive Bay |
2 x 3.5" SATA 6 Gbps HDD |
Drive Compatibility |
3.5" SATA 6Gb/s HDD |
|
2.5" SATA 6Gb/s HDD |
|
2.5" SATA 6Gb/s SSD |
SSD Cache Acceleration Support |
3.5" drive bay1 to 2 |
Gigabit Ethernet Port |
1 x RJ45 |
USB Port |
2 x USB 3.0, 3 x USB 2.0 |
USB One Touch Copy |
FrontUSB 3.0 Type-A |
PCIe Slot |
1 PCIe 2.0 x2 slot |
HDMI Output |
1 x HDMI v1.4b (up to 3840 x 2160 resolution at 30
Hz) |
IR sensor |
supporting QNAP RM-IR004 remote control (optional
purchase) |
Audio |
1 x speaker, 2 x MIC Input |
|
1 x 3.5 mm line-out jack |
|
Alarm buzzer |
|
Note: You cannot use the speakers and the line-out jack
simultaneously. |
LED Indicators |
Status/powerLANUSBHDD 1 - 2 |
Buttons |
Power, Reset, USB One-touch-copy |
System Warning |
Alarm buzzer and voice prompts |
Form Factor |
Tower |
Dimensions (H x W x D) |
168 x 105 x 226 mm ( 6.61 x 4.13 x 8.90 inch) |
Net Weight |
1.53 kg (3.37 lbs) |
Power Consumption (W) |
HDD standby8.08 W |
|
In operation15.25 W |
|
(with 2 x 1TB HDDs installed) |
Sound Level |
Sound pressure (LpAm): 17.3 dB(A) |
Power Supply Unit |
65W AC adapter, 100-240V |
Fan |
1 x 7 cm |
Operating Temperature &Relative
Humidity |
0 ~ 40ÚC ( 32ÚF ~ 104ÚF ), 5 ~ 95% RH non-condensing, wet bulb: 27ÚC
(80.6ÚF) |
Other Interfaces |
Kensington security
slot |