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Qnap
Desktop NAS
TS-251A-4G
2-Bay, RAID 0/1 (4GB RAM) + USB QuickAccess


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Stock codeIBQ-251A-4G
Quick code58870


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6Gb/s to Gigabit Ethernet (1,000 Mbit/s)
4GB RAM
14nm Intel® Celeron® N3060 dual-core 1.6GHz processor, up to 2.48GHz
2yr Warranty
Description
TS-251A
Dual-core NAS featuring USB QuickAccess port for direct access to files

The TS-251A provides the innovative USB 3.0 QuickAccess port that allows you to quickly complete the first-time NAS installation and to then directly access files and data stored on the NAS. It also supports two additional transmission modes: Ethernet NAS mode and iSCSI SAN block-based mode. Combining USB QuickAccess, NAS and iSCSI-SAN into one box, the TS-251A is a powerful but easy-to-use storage solution ideal for backup, synchronization, remote access, and entertainment. It greatly helps to boost productivity and can meet the demands of photographers and audiovisual enthusiasts for direct, quick access to files. The TS-251A is powered by an upgradable and high-performance 14nm Intel® Celeron® N3060 dual-core 1.6GHz processor, and supports 4K video playback and transcoding. Excellent system performance, ideal for centralized management, file sharing and backup USB QuickAccess port for accessing files without needing a network connection Supports 4K hardware decoding and transcodes 4K H.264 videos on-the-fly or offline Enjoy the best audio-visual experience with HDMI output, multi-channel surround sound and the free remote control Build a personal karaoke system with OceanKTV Linux Station supports Ubuntu® with direct output via HDMI A hybrid approach to virtualization: Virtualization Station & Container Station Supports Virtual JBOD (VJBOD) to maximize the storage utilization of multiple QNAP NAS units 14nm Intel® Celeron® N3060 dual-core CPU and hardware-accelerated encryption engine
The TS-251A is powered by an advanced 14nm Intel® Celeron® dual-core 1.6GHz processor that features low TDP (only 6 watts) and can automatically burst up to 2.48GHz. Coupled with dual-channel 2/4GB DDR3L-1600 dual-channel RAM (upgradable to 8GB), dual Gigabit LAN ports, and SATA 6Gb/s, the TS-251A can deliver up to 211.88 MB/s throughput for optimizing mission-critical tasks while still being energy efficient. The TS-251A also features Intel® AES-NI hardware-accelerated encryption to deliver up to 209.13 MB/s throughput with AES 256-bit throughput with AES-NI encryption for both full NAS volume and shared folders, boosting system performance & security while ensuring the safety of sensitive business data stored in the NAS.

Direct access to files with the USB QuickAccess port
The TS-251A features an innovative USB 3.0 QuickAccess port that allows you to complete the first-time installation and setup of your TS-251A without requiring network connectivity. The files and data stored on the TS-251A can also be directly accessed by using Qfinder Pro*and a USB 3.0 A-Male to Micro B-Male cable or a USB 2.0 Micro B cable**. Furthermore, you can assign access rights to users for different folders to prevent unauthorized access to important files.
* QfinderPro and USB QuickAccess support Windows 8.0 (and above) and Mac OS X 10.7(and above). Other versions may require driver installation.
**A USB cable is not included.


USB QuickAccess/NAS/iSCSI SAN triple solution
The TS-251A innovatively re-defines what NAS can do by providing a USB 3.0 QuickAccess/NAS/iSCSI SAN triple solution. It discards the restriction of conventional DAS that only allows connecting to one device, and breaks the cost barrier for a high-speed Ethernet solution. The TS-251A’s three data transmission modes not only work independently, but they also can simultaneously run with no bandwidth interference, allowing you to multi-task with utmost productivity.

USB QuickAccess Mode
You can instantly access files and data stored on the TS-251A by connecting a PC/Mac to its USB 3.0 QuickAccess port and by using the Qfinder Pro application. To balance security and convenience needs, this method provides three access authentication modes. These settings can be easily configured in Network and Virtual Switch in the QTS management interface:
The TS-251A’s USB mode is helpful for users that handle large volumes of media files on a daily basis. It provides an extremely convenient and fast solution for users to store and backup data on their computers or to access data on their NAS. With the USB mode the TS-251A is plug and use without compromising convenience or safety.

Ethernet NAS mode
The TS-251A features Ethernet networking for flexible and simultaneous file sharing across multiple devices, using SMB/CIFS, NFS and AFP protocols for sharing across Windows, Mac and Linux/UNIX networks. Use Qfinder Pro to find the TS-251A's Ethernet IP address to connect to it.

iSCSI SAN block-based mode
The TS-251A supports iSCSI SAN. After creating an iSCSI target on the TS-251A, you can access the iSCSI with your computer* using the NAS IP.
*iSCSI initiator for Mac: ATTO Xtend SAN or SNS globalSAN; for Windows: Microsoft iSCSI initiator


Superior 4K video transcoding
Featuring advanced 8th-generation Intel® HD Graphics, the TS-251A supports 4K H.264 hardware decoding and delivers superior real-time 4K and 1080p video transcoding to convert videos to universal formats that can be smoothly played on PCs, mobile devices and Smart TVs*. With offline transcoding, even when you can only connect using a low-speed Internet connection, you can still enjoy smooth video playback via File Station, Video Station, and the Qfile mobile app by selecting a pre-rendered lower resolution video. The TS-251A also allows you to set a dedicated folder for automatic video transcoding.
* Supported video formats depend on the hardware and software specifications of the devices.
Playback capability and quality may vary due to factors including the original file formats/quality, hardware and software limitations, and output devices.

Enjoy the best audiovisual experience with HDMI output and a free remote control
HD Station (HybridDesk Station) is a powerful media player and web browser. With HDMI connectivity, you can connect the TS-251A to a HDTV or an A/V receiver to enjoy your rich multimedia content and 4K (H.264) videos with the best audiovisual experience. The TS-251A’s multi-channel audio passthrough* and its powerful real-time transcoding capability facilitate smooth and enhanced playback of 4K videos**. With HD Station, you can even watch online multimedia contents using 3rd-party media player, surf the web and manage the TS-251A. HD Station supports multi-tasking and user authentication so only authorized users can access the stored data.

The TS-251A includes a free QNAP remote control, or you to conveniently control HD Station through its built-in IR receiver. With the help of the new smart remote control learning function, you can pair up to three TV or stereo IR remote controls and program frequently-used buttons and functions. From now on, you'll never again live in fear of losing or damaging your dedicated remote controls. You can also turn your mobile devices into remote controls by installing the Qremote app.

*An HDMI receiver is required for decoding multi-channel surround sound.
** Audiovisual quality may vary due to system load and network environment.
Playback capability and quality may vary due to factors including the original file formats/quality, hardware and software limitations, and output devices.


Enjoy media freely with multi-zone multimedia controls
Use a TS-251A as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage and stream photos, music and videos stored on the TS-251A to HDMI, DLNA®, Apple TV®, Chromecast™* , Roku®, Amazon® Fire TV or to the devices connected to the TS-251A (music streaming only) through Bluetooth® & USB. With Plex Media Server, the TS-251A is transformed into a powerful streaming machine.
*To stream multimedia via Chromecast, you must first install the Multimedia Extension Pack from the QTS App Center.

Enjoy an exclusive karaoke experience with OceanKTV
OceanKTV is the first NAS-based karaoke application and allows you to create a quality karaoke experience at home or in the office. The TS-251A offers high-capacity storage for accommodating up to thousands of 1080p karaoke songs. The TS-251A comes with a 3.5 mm microphone jack and can transmit audio to your amplifier using HDMI or the 3.5 mm Line out port. Simply attach an HDMI display to the TS-251A and start singing with OceanKTV. The experience can be managed using the OceanKTV app in QTS or by using the OceanKTV mobile app on your phone or tablet. More than a NAS, the TS-251A is a karaoke machine for singing entertainment. Enjoy alone or with your friends!

QTS – Simple and powerful
Thanks to the intuitive user interface of QTS, your NAS experience is smarter, smoother and spectacular. Its modern flat design streamlines loading times, and the intelligent desktop allows you to find desired functions quickly, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, and open multiple application windows to run multiple tasks concurrently, bringing greater working efficiency. QTS breaks the barriers of devices, platforms, and geography to bring optimized cloud experiences and incorporates advanced features including volume/LUN snapshots, remote connections to public cloud services in File Station, multi-zone multimedia system, and more.

File synchronization across devices and clouds
Qsync turns your TS-251A into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251A will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files and always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization and group file sharing, greatly enhancing the flexibility of team projects and collaboration. It also supports centralized configuration, and allows you to remotely erase the Qsync folder on a lost device to avoid data breaches, and even restore it after you have retrieved the device.

Cross-platform file sharing, centralized data storage
The TS-251A supports SMB/CIFS, NFS, and AFP protocols for file sharing across Windows®, Mac®, Linux®/UNIX® networks. Data, logs and ISO images of CDs and DVDs can be centrally stored on the TS-251A and protected by an integrated antivirus solution. The Windows AD® and LDAP services enable system administrators to configure user permissions by using an existing Windows AD server, LDAP server or the built-in LDAP service.

Centralize backup, restoration and synchronization with Hybrid Backup Sync
Hybrid Backup Sync consolidates backup, restoration and synchronization functions into a single QTS application for you to easily transfer your data to local or remote QNAP NAS, to remote servers and to cloud storage spaces as a comprehensive data storage and disaster recovery plan. You can synchronize files between the TS-251A and cloud storage in real time - including Amazon® Drive, Google Drive™, Dropbox®, Microsoft OneDrive®, Yandex® Disk, and Box®, and back up files to Amazon® S3, Amazon® Glacier, Microsoft® Azure™, Google Cloud Storage™, OpenStack Swift and WebDAV cloud services. Hybrid Backup Sync can detect sparse files to avoid backing up unnecessary data, and supports file compression to save storage space. There are flexible settings for concurrent file processing and multi-threaded data transfer by splitting large files into smaller parts, greatly increasing the file transfer rate for greater work efficiency.

Restore files with Snapshot for Volume & LUN
QTS Storage Manager features an easy-to-use web-based snapshot tool to easily backup and restore data on the TS-251A back to any point of time in the event of data loss. You can take snapshots for volumes and LUN (up to 64 snapshots per volume/LUN and maximum 256 snapshots per NAS), efficiently replicate volume/LUN snapshots via Snapshot Replica to remote servers by copying only the changes made, and quickly clone a volume /LUN snapshot as a local volume without interrupting current system operations. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even if files are opened.

Qsirch - a smarter, faster way to search
The TS-251A supports Qsirch, a proprietary search engine for quick file searching. In addition to previewing thumbnails, content abstract and keyword hints, Qsirch allows you to search through all of the .eml files stored on the TS-251A and use customized search criteria* such as date, size, sender and recipient. Qsirch even remembers your search history allowing you to quickly navigate to files you've previously searched for. You can also use the Google Chrome™ extension - Qsirch Helper - to search for files on your NAS when using Google Search™. Qsirch is a huge productivity boost that greatly reduces the time spent looking for files on the NAS, allowing you to focus on other tasks.

QmailAgent: a mailroom center for your private cloud
QmailAgent is an online email client that helps you manage multiple email accounts, allowing you to access all of your emails and to easily switch between different accounts. It provides complete functionality for composing, reading and organizing emails. You can even attach files, photos and documents from the TS-251A when composing emails. QmailAgent also allows iOS® and Android™ users to quickly check multiple email accounts with mobile devices, and to browse & send emails using the QmailAgent on their TS-251A. You can also use QmailAgent together with Qsirch, which supports powerful email search functions to search through all of the .eml files stored on the TS-251A to make managing and searching through massive quantities of emails much easier.

QTS-Linux dual systems for IoT applications
The TS-251A’s QTS-Linux dual systems are based on QNAP’s advanced virtualization technologies. The revolutionary architecture of the TS-251A enables users to not only to enjoy the extraordinary QTS operating system and download rich apps from QTS App Center but also to develop or utilize IoT packages for Linux®. The TS-251A supports Ubuntu and allows users to develop and install various IoT packages on demand and centrally store the data on the TS-251A, providing a secure private storage and IoT development solution. Simply plug in a keyboard, mouse and HDMI monitor to the TS-251A, and use the Linux Station as if you were using a PC*. You can also operate Ubuntu in Linux Station as a remote desktop via web browser for instant management**.
* The remote desktop function does not support remote audio output.
** Linux Station supports both Ubuntu versions 14.04 and 16.04 for users to choose from.

Storage for hosting virtual machines and containerized applications
Virtualization Station allows you to host virtual machines (VM) on the TS-251A and access them via a web browser or VNC. Virtualization Station supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, and Device Management for centrally managing VM. Virtualization Station allows the TS-251A and VMs to share the same LAN port. No longer constrained by physical network performance, high-speed Virtual Switches greatly increases data transfer between VMs as well as between VMs and NAS through the internal interface. You can also download VMs on demand from online VM markets and import them to the TS-251A without any complex procedures.

The TS-251A also features the game-changing container technology for server virtualization with Container Station. It exclusively integrates LXC and Docker® lightweight virtualization technologies, allowing you to operate multiple isolated Linux® systems on the TS-251A as well as download apps from the built-in Docker Hub Registry®. Container Station now also provides the QIoT Containers platform to help you quickly structure your IoT environment and deployment in your private cloud.

Comprehensive surveillance solution providing 24/7 security
Surveillance Station is a professional network surveillance Video Management System (VMS) that offers a user-friendly management interface, over 3,000 compatible IP camera models, and expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording and playback with a wide range of customizable settings. You can also install the Vmobile app on your iOS® or Android™ devices to manage monitored channels anytime and anywhere to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251A. The TS-251A includes 2 free IP camera channels and you can expand up to 32 channels by purchasing additional licenses.

Use NAS to expand NAS capacity with Virtual JBOD
Besides using physical storage expansion enclosures, there is an additional option to expand NAS storage capacity. QNAP VJBOD (Virtual JBOD) is network-based JBOD that allows you to expand the storage of a QNAP NAS by using unused storage from other QNAP NAS units. You can mount this storage space to the TS-251A as virtual disks and create virtual storage pools and volumes for NAS functions such as creating and reverting snapshots, indexing multimedia files into the media library, and even creating iSCSI LUNs. 

Connect a QNAP expansion enclosure to expand storage capacity easily
The TS-251A supports online capacity expansion for archiving rapidly-growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on demand, making the TS-251A an ideal file center with large storage capacity, especially useful for data-intensive applications.
With the support of QJBOD Express (JBOD enclosures roaming)*, you can just connect a large capacity QNAP expansion enclosure to the TS-251A, and migrate data to another NAS through the JBOD enclosure without needing a network connection.
*RAID groups of storage pools cannot cross multiple enclosures.
**The maximum capacity is calculated by using 8TB HDDs.

Helpdesk: Submit technical support request and get help quickly
If you encounter technical problems or have suggestions for improving our products you can directly contact our support staff using the Helpdesk app. This app allows you to directly send feedback, questions, and technical support requests to our support team. Helpdesk features remote support, allowing our support team to help you quickly resolve issues by remotely connecting to your NAS over a secure 256-bit SSL encrypted connection. Helpdesk also provides a range of online resources, including online tutorials, frequently-asked questions, compatibility lists and the QNAP Helpdesk Knowledgebase. Whether you are a new or experienced NAS user, you can quickly find answers to your questions by browsing through these resources.
Note: Response times may vary depending on your location, time zones, and local holidays.

Additional features
The TS-251A supports various applications for home offices as an all-in-one Turbo NAS with cost-efficiency.
FTP Server
Web Server
RADIUS Server
The Turbo NAS supports Web server which allows numerous websites built on the same server conveniently. Administrators can manage up to 32 websites on the single one Turbo NAS for reduced IT costs.
QTS also supports VPN Client for PPTP and OpenVPN to protect your privacy during data transmission.

1 x 3.5mm Line Out jack





Photographers, videographers, and other creators often run into the limits of conventional FAT32-based storage. With the potential of 4K video files to exceed hundreds of gigabytes, FAT32's 4GB single file limit makes it ill-suited for high-resolution media files. With exFAT supporting files up to 16EB, you don’t need to break files into multiple smaller ones, eliminating the risk of file loss and minimizing waiting times when transferring larger files from the USB drives/SD cards to NAS.

Starting from QTS 4.3.0, you can purchase an exFAT license from the QNAP License Store. Once the license is installed, you can directly copy and edit files that are stored on exFAT-based storage devices after it is connected to a compatible QNAP NAS.
Specifications
Specifications

General

Stock code IBQ-251A-4G
Brand Qnap
Series Desktop NAS
Model TS-251A-4G
Type 2-Bay, RAID 0/1 (4GB RAM) + USB QuickAccess
ROHS Y
Date added 18/07/2016

TS-251A-4G Spec Information

Form factor / drive height 168.5x102x225mm
Platter size 3.5"
Platter (alternate) 2.5"
Cache 4GB
Guarantee 2yr
Processor 14nm Intel® Celeron® N3060 dual-core 1.6GHz processor, up to 2.48GHz
CPU Mark (cpubenchmark.net) 1029
Total Drives 2
RAID 0:1:JBOD:
RAID Levels Single Disk, JBOD, RAID 0, 1

TS-251A-4G Spec Connections

sub- connectionI/EQuantity
USB3USB3 Micro-BExternal1
LANLANExternal2
SATASATA 7-pin Discrete with PowerInternal2
USB3USB3 type A (host)External3
SD CardSD CardExternal1

Software

TS-251A-4G Speed

Speed/RPM 6Gb/s to Gigabit Ethernet (1,000 Mbit/s)

Physical

Colour White
Weight (kg) 2.64kg
Weight (bare) 1.28kg
External Length (mm) 390cm
External Width (mm) 320cm
External Height (mm) 300cm
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Stock codeIBQ-251A-4G
Quick code58870
Choose electric outlet for United States TS-251A-4G with UK power plug TS-251A-4G with EURO power plug TS-251A-4G with US American power plug TS-251A-4G with AU Australian power plug
Your local power plug included



Qnap
Desktop NAS
TS-251A-4G
2-Bay, RAID 0/1 (4GB RAM) + USB QuickAccess



TS-251A-4G review star 1TS-251A-4G review star 2TS-251A-4G review star 3TS-251A-4G review star 4TS-251A-4G review star 5 5/2 Reviews

RAM 2GB4GB

BAYS
2 bays 4 bays

Hardware Encryption EngineHDMI supportdlna supportplex support1080p supportultra hd 4k support4k transcodingintel-inside




FREE Build & Test
Hard Drives Tested
Enclosure Tested
Firmware Upgraded
RAID Built
After Sales Support Included!
US power plug included on request


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Description

Qnap Desktop NAS TS-251A-4G 2-Bay, RAID 0/1 (4GB RAM) + USB QuickAccess


Qnap TS-251A-4G logo

Qnap TS251A4G Key features


6Gb/s to Gigabit Ethernet (1,000 Mbit/s)
4GB RAM
14nm Intel® Celeron® N3060 dual-core 1.6GHz processor, up to 2.48GHz
2yr Warranty

free camera License
2x Free Camera Licenses

Enjoy Surround Sound with QNAP (DTS and Dolby codecs) dts surround dolby surround
You can use HDMI port to connect your NAS to surround sound supporting amplifier. Alternatively you can connect external sound card with 5.1 channel or 7.1 channel compatibility. Find a list of sound cards here.

TS-251A
Dual-core NAS featuring USB QuickAccess port for direct access to files

The TS-251A provides the innovative USB 3.0 QuickAccess port that allows you to quickly complete the first-time NAS installation and to then directly access files and data stored on the NAS. It also supports two additional transmission modes: Ethernet NAS mode and iSCSI SAN block-based mode. Combining USB QuickAccess, NAS and iSCSI-SAN into one box, the TS-251A is a powerful but easy-to-use storage solution ideal for backup, synchronization, remote access, and entertainment. It greatly helps to boost productivity and can meet the demands of photographers and audiovisual enthusiasts for direct, quick access to files. The TS-251A is powered by an upgradable and high-performance 14nm Intel® Celeron® N3060 dual-core 1.6GHz processor, and supports 4K video playback and transcoding.

  • Excellent system performance, ideal for centralized management, file sharing and backup
  • USB QuickAccess port for accessing files without needing a network connection
  • Supports 4K hardware decoding and transcodes 4K H.264 videos on-the-fly or offline
  • Enjoy the best audio-visual experience with HDMI output, multi-channel surround sound and the free remote control
  • Build a personal karaoke system with OceanKTV
  • Linux Station supports Ubuntu® with direct output via HDMI
  • A hybrid approach to virtualization: Virtualization Station & Container Station
  • Supports Virtual JBOD (VJBOD) to maximize the storage utilization of multiple QNAP NAS units

14nm Intel® Celeron® N3060 dual-core CPU and hardware-accelerated encryption engine
The TS-251A is powered by an advanced 14nm Intel® Celeron® dual-core 1.6GHz processor that features low TDP (only 6 watts) and can automatically burst up to 2.48GHz. Coupled with dual-channel 2/4GB DDR3L-1600 dual-channel RAM (upgradable to 8GB), dual Gigabit LAN ports, and SATA 6Gb/s, the TS-251A can deliver up to 211.88 MB/s throughput for optimizing mission-critical tasks while still being energy efficient. The TS-251A also features Intel® AES-NI hardware-accelerated encryption to deliver up to 209.13 MB/s throughput with AES 256-bit throughput with AES-NI encryption for both full NAS volume and shared folders, boosting system performance & security while ensuring the safety of sensitive business data stored in the NAS.

Direct access to files with the USB QuickAccess port
The TS-251A features an innovative USB 3.0 QuickAccess port that allows you to complete the first-time installation and setup of your TS-251A without requiring network connectivity. The files and data stored on the TS-251A can also be directly accessed by using Qfinder Pro*and a USB 3.0 A-Male to Micro B-Male cable or a USB 2.0 Micro B cable**. Furthermore, you can assign access rights to users for different folders to prevent unauthorized access to important files.
* QfinderPro and USB QuickAccess support Windows 8.0 (and above) and Mac OS X 10.7(and above). Other versions may require driver installation.
**A USB cable is not included.


USB QuickAccess/NAS/iSCSI SAN triple solution

The TS-251A innovatively re-defines what NAS can do by providing a USB 3.0 QuickAccess/NAS/iSCSI SAN triple solution. It discards the restriction of conventional DAS that only allows connecting to one device, and breaks the cost barrier for a high-speed Ethernet solution. The TS-251A’s three data transmission modes not only work independently, but they also can simultaneously run with no bandwidth interference, allowing you to multi-task with utmost productivity.

USB QuickAccess Mode
You can instantly access files and data stored on the TS-251A by connecting a PC/Mac to its USB 3.0 QuickAccess port and by using the Qfinder Pro application. To balance security and convenience needs, this method provides three access authentication modes. These settings can be easily configured in Network and Virtual Switch in the QTS management interface:
The TS-251A’s USB mode is helpful for users that handle large volumes of media files on a daily basis. It provides an extremely convenient and fast solution for users to store and backup data on their computers or to access data on their NAS. With the USB mode the TS-251A is plug and use without compromising convenience or safety.

Ethernet NAS mode
The TS-251A features Ethernet networking for flexible and simultaneous file sharing across multiple devices, using SMB/CIFS, NFS and AFP protocols for sharing across Windows, Mac and Linux/UNIX networks. Use Qfinder Pro to find the TS-251A's Ethernet IP address to connect to it.

iSCSI SAN block-based mode
The TS-251A supports iSCSI SAN. After creating an iSCSI target on the TS-251A, you can access the iSCSI with your computer* using the NAS IP.
*iSCSI initiator for Mac: ATTO Xtend SAN or SNS globalSAN; for Windows: Microsoft iSCSI initiator


Superior 4K video transcoding

Featuring advanced 8th-generation Intel® HD Graphics, the TS-251A supports 4K H.264 hardware decoding and delivers superior real-time 4K and 1080p video transcoding to convert videos to universal formats that can be smoothly played on PCs, mobile devices and Smart TVs*. With offline transcoding, even when you can only connect using a low-speed Internet connection, you can still enjoy smooth video playback via File Station, Video Station, and the Qfile mobile app by selecting a pre-rendered lower resolution video. The TS-251A also allows you to set a dedicated folder for automatic video transcoding.
* Supported video formats depend on the hardware and software specifications of the devices.
Playback capability and quality may vary due to factors including the original file formats/quality, hardware and software limitations, and output devices.

Enjoy the best audiovisual experience with HDMI output and a free remote control
HD Station (HybridDesk Station) is a powerful media player and web browser. With HDMI connectivity, you can connect the TS-251A to a HDTV or an A/V receiver to enjoy your rich multimedia content and 4K (H.264) videos with the best audiovisual experience. The TS-251A’s multi-channel audio passthrough* and its powerful real-time transcoding capability facilitate smooth and enhanced playback of 4K videos**. With HD Station, you can even watch online multimedia contents using 3rd-party media player, surf the web and manage the TS-251A. HD Station supports multi-tasking and user authentication so only authorized users can access the stored data.

The TS-251A includes a free QNAP remote control, or you to conveniently control HD Station through its built-in IR receiver. With the help of the new smart remote control learning function, you can pair up to three TV or stereo IR remote controls and program frequently-used buttons and functions. From now on, you'll never again live in fear of losing or damaging your dedicated remote controls. You can also turn your mobile devices into remote controls by installing the Qremote app.

*An HDMI receiver is required for decoding multi-channel surround sound.
** Audiovisual quality may vary due to system load and network environment.
Playback capability and quality may vary due to factors including the original file formats/quality, hardware and software limitations, and output devices.


Enjoy media freely with multi-zone multimedia controls
Use a TS-251A as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage and stream photos, music and videos stored on the TS-251A to HDMI, DLNA®, Apple TV®, Chromecast™* , Roku®, Amazon® Fire TV or to the devices connected to the TS-251A (music streaming only) through Bluetooth® & USB. With Plex Media Server, the TS-251A is transformed into a powerful streaming machine.
*To stream multimedia via Chromecast, you must first install the Multimedia Extension Pack from the QTS App Center.

Enjoy an exclusive karaoke experience with OceanKTV
OceanKTV is the first NAS-based karaoke application and allows you to create a quality karaoke experience at home or in the office. The TS-251A offers high-capacity storage for accommodating up to thousands of 1080p karaoke songs. The TS-251A comes with a 3.5 mm microphone jack and can transmit audio to your amplifier using HDMI or the 3.5 mm Line out port. Simply attach an HDMI display to the TS-251A and start singing with OceanKTV. The experience can be managed using the OceanKTV app in QTS or by using the OceanKTV mobile app on your phone or tablet. More than a NAS, the TS-251A is a karaoke machine for singing entertainment. Enjoy alone or with your friends!

QTS – Simple and powerful
Thanks to the intuitive user interface of QTS, your NAS experience is smarter, smoother and spectacular. Its modern flat design streamlines loading times, and the intelligent desktop allows you to find desired functions quickly, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, and open multiple application windows to run multiple tasks concurrently, bringing greater working efficiency. QTS breaks the barriers of devices, platforms, and geography to bring optimized cloud experiences and incorporates advanced features including volume/LUN snapshots, remote connections to public cloud services in File Station, multi-zone multimedia system, and more.

File synchronization across devices and clouds
Qsync turns your TS-251A into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251A will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files and always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization and group file sharing, greatly enhancing the flexibility of team projects and collaboration. It also supports centralized configuration, and allows you to remotely erase the Qsync folder on a lost device to avoid data breaches, and even restore it after you have retrieved the device.

Cross-platform file sharing, centralized data storage
The TS-251A supports SMB/CIFS, NFS, and AFP protocols for file sharing across Windows®, Mac®, Linux®/UNIX® networks. Data, logs and ISO images of CDs and DVDs can be centrally stored on the TS-251A and protected by an integrated antivirus solution. The Windows AD® and LDAP services enable system administrators to configure user permissions by using an existing Windows AD server, LDAP server or the built-in LDAP service.

Centralize backup, restoration and synchronization with Hybrid Backup Sync
Hybrid Backup Sync consolidates backup, restoration and synchronization functions into a single QTS application for you to easily transfer your data to local or remote QNAP NAS, to remote servers and to cloud storage spaces as a comprehensive data storage and disaster recovery plan. You can synchronize files between the TS-251A and cloud storage in real time - including Amazon® Drive, Google Drive™, Dropbox®, Microsoft OneDrive®, Yandex® Disk, and Box®, and back up files to Amazon® S3, Amazon® Glacier, Microsoft® Azure™, Google Cloud Storage™, OpenStack Swift and WebDAV cloud services. Hybrid Backup Sync can detect sparse files to avoid backing up unnecessary data, and supports file compression to save storage space. There are flexible settings for concurrent file processing and multi-threaded data transfer by splitting large files into smaller parts, greatly increasing the file transfer rate for greater work efficiency.

Restore files with Snapshot for Volume & LUN
QTS Storage Manager features an easy-to-use web-based snapshot tool to easily backup and restore data on the TS-251A back to any point of time in the event of data loss. You can take snapshots for volumes and LUN (up to 64 snapshots per volume/LUN and maximum 256 snapshots per NAS), efficiently replicate volume/LUN snapshots via Snapshot Replica to remote servers by copying only the changes made, and quickly clone a volume /LUN snapshot as a local volume without interrupting current system operations. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even if files are opened.

Qsirch - a smarter, faster way to search
The TS-251A supports Qsirch, a proprietary search engine for quick file searching. In addition to previewing thumbnails, content abstract and keyword hints, Qsirch allows you to search through all of the .eml files stored on the TS-251A and use customized search criteria* such as date, size, sender and recipient. Qsirch even remembers your search history allowing you to quickly navigate to files you've previously searched for. You can also use the Google Chrome™ extension - Qsirch Helper - to search for files on your NAS when using Google Search™. Qsirch is a huge productivity boost that greatly reduces the time spent looking for files on the NAS, allowing you to focus on other tasks.

QmailAgent: a mailroom center for your private cloud
QmailAgent is an online email client that helps you manage multiple email accounts, allowing you to access all of your emails and to easily switch between different accounts. It provides complete functionality for composing, reading and organizing emails. You can even attach files, photos and documents from the TS-251A when composing emails. QmailAgent also allows iOS® and Android™ users to quickly check multiple email accounts with mobile devices, and to browse & send emails using the QmailAgent on their TS-251A. You can also use QmailAgent together with Qsirch, which supports powerful email search functions to search through all of the .eml files stored on the TS-251A to make managing and searching through massive quantities of emails much easier.

QTS-Linux dual systems for IoT applications
The TS-251A’s QTS-Linux dual systems are based on QNAP’s advanced virtualization technologies. The revolutionary architecture of the TS-251A enables users to not only to enjoy the extraordinary QTS operating system and download rich apps from QTS App Center but also to develop or utilize IoT packages for Linux®. The TS-251A supports Ubuntu and allows users to develop and install various IoT packages on demand and centrally store the data on the TS-251A, providing a secure private storage and IoT development solution. Simply plug in a keyboard, mouse and HDMI monitor to the TS-251A, and use the Linux Station as if you were using a PC*. You can also operate Ubuntu in Linux Station as a remote desktop via web browser for instant management**.
* The remote desktop function does not support remote audio output.
** Linux Station supports both Ubuntu versions 14.04 and 16.04 for users to choose from.

Storage for hosting virtual machines and containerized applications
Virtualization Station allows you to host virtual machines (VM) on the TS-251A and access them via a web browser or VNC. Virtualization Station supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, and Device Management for centrally managing VM. Virtualization Station allows the TS-251A and VMs to share the same LAN port. No longer constrained by physical network performance, high-speed Virtual Switches greatly increases data transfer between VMs as well as between VMs and NAS through the internal interface. You can also download VMs on demand from online VM markets and import them to the TS-251A without any complex procedures.

The TS-251A also features the game-changing container technology for server virtualization with Container Station. It exclusively integrates LXC and Docker® lightweight virtualization technologies, allowing you to operate multiple isolated Linux® systems on the TS-251A as well as download apps from the built-in Docker Hub Registry®. Container Station now also provides the QIoT Containers platform to help you quickly structure your IoT environment and deployment in your private cloud.

Comprehensive surveillance solution providing 24/7 security
Surveillance Station is a professional network surveillance Video Management System (VMS) that offers a user-friendly management interface, over 3,000 compatible IP camera models, and expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording and playback with a wide range of customizable settings. You can also install the Vmobile app on your iOS® or Android™ devices to manage monitored channels anytime and anywhere to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251A. The TS-251A includes 2 free IP camera channels and you can expand up to 32 channels by purchasing additional licenses.

Use NAS to expand NAS capacity with Virtual JBOD
Besides using physical storage expansion enclosures, there is an additional option to expand NAS storage capacity. QNAP VJBOD (Virtual JBOD) is network-based JBOD that allows you to expand the storage of a QNAP NAS by using unused storage from other QNAP NAS units. You can mount this storage space to the TS-251A as virtual disks and create virtual storage pools and volumes for NAS functions such as creating and reverting snapshots, indexing multimedia files into the media library, and even creating iSCSI LUNs. 

Connect a QNAP expansion enclosure to expand storage capacity easily
The TS-251A supports online capacity expansion for archiving rapidly-growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on demand, making the TS-251A an ideal file center with large storage capacity, especially useful for data-intensive applications.
With the support of QJBOD Express (JBOD enclosures roaming)*, you can just connect a large capacity QNAP expansion enclosure to the TS-251A, and migrate data to another NAS through the JBOD enclosure without needing a network connection.
*RAID groups of storage pools cannot cross multiple enclosures.
**The maximum capacity is calculated by using 8TB HDDs.

Helpdesk: Submit technical support request and get help quickly
If you encounter technical problems or have suggestions for improving our products you can directly contact our support staff using the Helpdesk app. This app allows you to directly send feedback, questions, and technical support requests to our support team. Helpdesk features remote support, allowing our support team to help you quickly resolve issues by remotely connecting to your NAS over a secure 256-bit SSL encrypted connection. Helpdesk also provides a range of online resources, including online tutorials, frequently-asked questions, compatibility lists and the QNAP Helpdesk Knowledgebase. Whether you are a new or experienced NAS user, you can quickly find answers to your questions by browsing through these resources.
Note: Response times may vary depending on your location, time zones, and local holidays.

Additional features
The TS-251A supports various applications for home offices as an all-in-one Turbo NAS with cost-efficiency.
FTP Server
Web Server
RADIUS Server
The Turbo NAS supports Web server which allows numerous websites built on the same server conveniently. Administrators can manage up to 32 websites on the single one Turbo NAS for reduced IT costs.
QTS also supports VPN Client for PPTP and OpenVPN to protect your privacy during data transmission.

1 x 3.5mm Line Out jack




exFAT - the Next-generation File System
Photographers, videographers, and other creators often run into the limits of conventional FAT32-based storage. With the potential of 4K video files to exceed hundreds of gigabytes, FAT32's 4GB single file limit makes it ill-suited for high-resolution media files. With exFAT supporting files up to 16EB, you don’t need to break files into multiple smaller ones, eliminating the risk of file loss and minimizing waiting times when transferring larger files from the USB drives/SD cards to NAS.

Starting from QTS 4.3.0, you can purchase an exFAT license from the QNAP License Store. Once the license is installed, you can directly copy and edit files that are stored on exFAT-based storage devices after it is connected to a compatible QNAP NAS.

Spanstor Build And Test
If you buy this Qnap Desktop NAS and hard drives we do free build and test for the unit and hard drives. So you can use this device straight out of the box. All free of charge in TS-251A-4G price.
Same Day and Next Day Delivery available in UK and fast WorldWide delivery for products in stock.
FREE Business Quotes available for products with specific requirements or quantities. Often cheaper than Amazon.

Qnap TS-251A-4G Desktop NAS RAM / Card upgrade options



Qnap RAM-2GDR3L-SO-1600 expansion RAM-2GDR3L-SO-1600 RAM-2GDR3L-SO-1600 More Info
Qnap RAM-4GDR3L-SO-1600 expansion RAM-4GDR3L-SO-1600 RAM-4GDR3L-SO-1600 More Info
Qnap RAM-1GDR3L-SO-1600 expansion RAM-1GDR3L-SO-1600 RAM-1GDR3L-SO-1600 More Info

Double your speed with Link Aggregation



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Add two Gigabit Ethernet ports and a USB 3.0 pass-through port to your laptop through a single USB 3.0 port


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How to install Kodi and Netflix on your QNAP NAS in 2017
Our Brief Guide to installing KODI on your NAS
how to install kodi on qnap

Best 2 bay NAS- Qnap 2016
Best for Plex, Surveillance, Performance, Connectivity, Energy saving, Warranty, Transcoding


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best qnap 2 bay 2016






Specifications

General

Stock code IBQ-251A-4G
Brand Qnap
Series Desktop NAS
Model TS-251A-4G
Type 2-Bay, RAID 0/1 (4GB RAM) + USB QuickAccess
ROHS Y
Date added 18/07/2016

TS-251A-4G Spec Information

Form factor / drive height 168.5x102x225mm
Platter size 3.5"
Platter (alternate) 2.5"
Cache 4GB
Guarantee 2yr
Processor 14nm Intel® Celeron® N3060 dual-core 1.6GHz processor, up to 2.48GHz
CPU Mark (cpubenchmark.net) 1029
Total Drives 2
RAID 0:1:JBOD:
RAID Levels Single Disk, JBOD, RAID 0, 1

TS-251A-4G Spec Connections

sub- connectionI/EQuantity
USB3USB3 Micro-BExternal1
LANLANExternal2
SATASATA 7-pin Discrete with PowerInternal2
USB3USB3 type A (host)External3
SD CardSD CardExternal1

Software

TS-251A-4G Speed

Speed/RPM 6Gb/s to Gigabit Ethernet (1,000 Mbit/s)

Physical

Colour White
Weight (kg) 2.64kg
Weight (bare) 1.28kg
External Length (mm) 390cm
External Width (mm) 320cm
External Height (mm) 300cm
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Qnap Desktop NAS TS 251A 4G reviews


16/11/2017 | Popular Question | GB Flag |
Is there a difference between network drive, backup drive, network hard drive and nas drive?

There is no physical difference between a network drive, backup drive, network hard drive and NAS drive, the MAIN difference is about the use of the equipment. So:

A Network Drive is a area on storage that is useable to anyone on the network and will be visible to the device you are using if you have the correct login/password.

A Backup Drive is a storage device is a area of NAS or DAS storage that is used JUST for backups and only for writing, not reading - it backs up one or multiple devices on a regular basis.


A Network Hard Drive is the same as a network drive, but instead of a portion of online storage that is network/internet accessible, it is an entire disk drive. Much larger and often includes a RAID drive acting as a fall-back.

A NAS Drive can do all of the above. It can be set up to be a backup drive for all your devices, it can make either a portion or ALL of the storage available over the internet or network, it can do all of these at the same time and can give you much, much more access options thanks to NAS software from the likes of QNAP, Synology, WD, Asustor, Buffalo and Drobo.


 

16/11/2017 | Popular Question | GB Flag |
What is a server at home?

A server at home is a network attached storage device (NAS) that is like a computer, but with the emphasis on storage space. They can be purchased for as little as £100 and mean all your data can be accessed, used and backed up to and from overt the internet or your home network (WiFi etc). Bigger and more expensive home servers can do more, such as virtual computers, surveillance recording and multimedia access.

16/11/2017 | Popular Question | GB Flag |
What is meant by diskless NAS?

A Diskless NAS means that it a network storage device that is sold without any Hard Drives inside. Many NAS Brands like WD and Buffalo will only sell their NAS server devices with Drives already installed - this can often increase the price significantly, as well as limit the Hard Drives you want to install. A diskless NAS is a device that you can choose which drives, how many and the capacity you want and install them yourself, for a more bespoke NAS storage device. Installing the Hard Drives is very easy and you can often save a lot of time and improve your long term storage by choosing a diskless NAS and selecting the drives yourself.

16/11/2017 | Popular Question | GB Flag |
What is a NAS external hard drive?

A NAS external Hard Drive is an external storage device that, unlike USB 3.0 and eSATA external Hard Drives, is accessed used the internet or your home network. So that means you can access the contents (DATA) of the NAS on your iPhone, iPad, Smart TV, PS4, XBOX One, Sonos Sound System, Bose system, Laptop, Smartphone and pretty much any DLNA enabled device without having to connect to it with a cable. Meaning you do not need to carry duplicates of all your data on all your devices, but can have one central NAS storage devices that all the other devices can access.

16/11/2017 | Popular Question | GB Flag |
How do I connect to my NAS remotely?

You can connect to your NAS server remotely with the mobile applications that are free with your NAS Brand manufacturer for iOS and Android. Alternatively you can use a number of desktop applications from the big brands QNAP and Synology NAS to access your device remotely. Lastly you can create a network and internet accessible drive with iSCSI and then setup software (Virtual Machine, backup, Surveillance and more) on your Mac or Windows machine to read and write to the NAS remotely.

16/11/2017 | Popular Question | GB Flag |
What is a NAS drive used for?

A NAS drive can be used for the following:

Apple Time Machine Backups
Synchronized Backups of Windows and Android devices
A Plex Media Server
DLNA Media Server
Download Server
Printer Server
Virtual Machine Deployment
Email Server
CRM and/or CMS System
A CCTV IP Camera Enabled Surveillance station for your home or office
File Server
and more...


 

16/11/2017 | Popular Question | GB Flag |
What are the different types of RAID?

The most popular and recommended RAID levels for a 2-Bay NAS and 4-Bay NAS from Synology and QNAP are:

RAID 0 - Meaning all drive storage is pooled together into 1 big drive - MOST UNSAFE
RAID 1 - Drives are duplicated so you lose half the available storage, but have a complete, up to the second copy of your data
RAID 5 - You lose 1 drive of data storage space, but data is spread across all the available drives and a small piece of information called PARITY is created each wave/stripe that makes a blueprint of all the data
RAID 6 - Same as above, but it removes two drives worth of space and protects you against the loss of two Hard Drives

16/11/2017 | Popular Question | GB Flag |
What is a RAID hard drive?

A RAID Hard drive is a Hard Disk Drive that is designed to be used in a RAID configuration - in simple terms it is a drive that can be installed with multiple other drives of the same type (such as WD Red RAID Drives, WD Purples Surveillance RAID Drives and Seagate Ironwolf NAS RAID Drives). These are designed to be on for long periods of time and for handling data that is shared and/or duplicated across multiple drives at once - constructed with better vibration, head and access controls). Most other drives are designed to work on their own.

16/11/2017 | Popular Question | GB Flag |
What is raid on a NAS?

RAID on a NAS is a means to protect yourself from losing your data due to hard drive failure. Hard Drives are the 2nd most vulnerable area of a NAS device and if a drive fails and you do not have a copy of the data elsewhere, you will most likely lose it all. RAID gives you a safety net (called REDUNDANCY) which means you can afford to lose 1, 2 or even 3 hard drives with the right configuration. The most common options are:

RAID 0 - Meaning all drive storage is pooled together into 1 big drive - MOST UNSAFE
RAID 1 - Drives are duplicated so you lose half the available storage, but have a complete, up to the second copy of your data
RAID 5 - You lose 1 drive of data storage space, but data is spread across all the available drives and a small piece of information called PARITY is created each wave/stripe that makes a blueprint of all the data
RAID 6 - Same as above, but it removes two drives worth of space and protects you against the loss of two Hard Drives

16/11/2017 | Popular Question | GB Flag |
What is a personal cloud storage device?

A personal Cloud storage device is a piece of Hardware, Like a NAS, that gives you the access, freedom, speed and utility of popular 3rd party cloud providers such as Dropbox, Google Drive, iCloud, Amazon S3 and more. However unlike those providers that hold your data on a server farm hundreds or thousands of miles away, where you it can be broken into, a Personal Cloud (NAS) lives in your home/office and can be protected with both bespoke AES-256bit encryption, individual login credentials and if the worst case scenario, can be simply unplugged from the network/internet.


It is also considerably cheaper in the long term.


 

16/11/2017 | Popular Question | GB Flag |
How do you connect to a NAS?

You can connect to a device in several ways:


- You can connect to a NAS via your home network as long as it is connected to the same router/switch that your other devices are connected to, via cable or over Wi-Fi (the devices, not the NAS)


- You can connect over the internet using the NAS manufacturer’s respective software on desktop or mobile platforms for Mac, Windows and Android devices


- You can also access the data as a network drive (where the location of the drive with be an IP - 192.168. etc.) and then the drive can be read and written to as needed


Thank you


 

16/11/2017 | Popular Question | GB Flag |
How does a NAS device work?

Excellent Question. A NAS devices like a computer that is dedicated to storing data that is made accessible across all your internet enabled devices. It connects to your home network (in simple terms, the internet connected network in your home or office) and makes the data that is store on it accessible. You can also access the data from outside the phone via WiFi at hotspots and other buildings, or via your mobile 3G or 4G internet connection.

16/11/2017 | Popular Question | GB Flag |
Do you really need a NAS?

If you have data spread across multiple devices without a single backup location, then YES, you really do need a NAS drive. As it will make backing up with multiple devices easier, more automated and reliable.


If you are a business with large amounts of data that needs to be accessible quickly, across multiple machines or outside your office environment for off-site staff or clients, then YES you needs a NAS.


If you want your internet accessible data to be 100% inaccessible when needed (for security) and are considering a Cloud provider or a NAS, BUY A NAS!!! It is cheaper in the long run and can have individual and bespoke security measures. 


 

16/11/2017 | Popular Question | GB Flag |
What is a NAS drives for home?

A NAS drive for Home is the means of storing your data in a central location that can be used for more home and entertainment based applications. Often these are 2-Bay or 4-Bay NAS Devices that support applications such as Plex, DLNA Server support, Backups like Apple Time Machine and Surveillance over IP cameras from companies such as Edimax and Reolink. The Hard drives in a NAS Drive for Home are recommended to be WD Red NAS Drives or Seagate Ironwolf NAS drives.


 

19/10/2017 | | US Flag |
Good for music / movie / picture sharing in a busy house. Always lots of devices on the go and keeps up with us all. Pleased with this purchase from you. Keep up the good work!



SPAN.COM tech team
26/08/2016 | | DE Flag |
First of a kind solution to directly access data from - to NAS


* Image courtesy of stockimages at FreeDigitalPhotos.net
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Unit 19,
Red Lion Business Centre,
Red Lion Road,
Tolworth, Surbiton,
Surrey,
KT6 7QD
England -UK

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