QNAP TS-251+ 2-Bay Home and SOHO NAS Enclosure

QNAP TS-251+ 2-Bay Home and SOHO NAS Enclosure

QNAP TS-251+ 2-Bay Home and SOHO NAS Enclosure

B&H # QNTS2512G MFR # TS-251+-2G-US
QNAP TS-251+ 2-Bay Home and SOHO NAS Enclosure

Show MoreLess


Now Viewing:

In Stock
Order in the next 0:00:00 to ship today

Product Highlights

  • 2 x 3.5" or 2.5" SATA III Drive Bays
  • 2.0 GHz Intel Celeron Quad-Core
  • 2GB of DDR3L RAM
  • 2 x Gigabit Ethernet Ports
  • 2 x USB 3.0 & 2 x USB 2.0 Ports
  • RAID 0,1, and JBOD Support
  • Read & Write Speeds: up to 225 MB/s
  • FIPS 140-2 AES 256-Bit Encryption
  • QNAP HD Station & HDMI Connectivity
  • QTS 4.2 Operating System
Show moreShow less

Memory (RAM): 2GB


B&H $500 Gift Card Dash

Share for a chance to win a $500 B&H Gift Card!

Share on Twitter

Share a favorite product for chances to win one of eight $500 B&H Gift Cards!
1 new winner announced every Monday starting Nov 5th!
Limit 1 entry per day: Come back every day to increase your chance of winning.

Be sure to mention #BHWishList when you share!

Congrats to our winners so far:

Next winner: Nov 26th

James Z. (Wk 1)

Ralph H. (Wk 2)

Official Rules


NO PURCHASE IS NECESSARY TO ENTER OR WIN. The B&H $500.00 Gift Card Dash (the "Sweepstakes") is void where prohibited by law and is sponsored by B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 ("Sponsor"). It is not sponsored or endorsed by Facebook or Twitter in any way.

Entry Period/Methods of Entry. The Sweepstakes will run from on or about October 28, 2018 until on or about December 23, 2018 (the "Entry Period"). Entries received outside the Entry Period are void. Enter the Sweepstakes via either one of the following methods. (1) Share any product found on the B&H website (the "Website") on Facebook or Twitter via the dedicated links contained on the website using the hashtag #BHWishlist; or (2) Mail a postcard (postmarked during the Entry Period) containing your name, address, phone number, and email address, and indicate the subject(s), if any, about which you are interested in receiving future emails from B&H (e.g. photo, video, audio, computers, home theater, portable entertainment ) (optional) to: B&H $500.00 Gift Card Dash Sweepstakes, c/o B&H Foto & Electronics Corp., 440 Ninth Avenue, New York, NY 10001 (either option, an "Entry"). Entries must not, in the sole and absolute discretion of the Sponsor, contain obscene, provocative, defamatory, sexually explicit, or otherwise objectionable or inappropriate content. Entries deemed by Sponsor to be inappropriate will be disqualified. Entries owned by a third party, or the use of any trademarks, service marks, logos, brands, or products owned by a third party are not acceptable for entry into the Sweepstakes. Limit 1 entry per person, per day.

Winner Selection/Prizes/Odds. The B&H Social Team will randomly select a winner from among all eligible entries every Monday during the Entry Period, for a total eight (8) winners (each a "Winner"). Each Winner will receive a B&H Gift Card pre-valued in the amount of $500.00. No cash or other substitutions will be offered. Winner selection is in the sole and absolute discretion of the B&H Social Team. Any taxes are the sole responsibility of the winner. Winners will be notified and receive their prize at the email address associated with the account to which their Entry was posted or the email account provided with a mail-in entry. The odds of winning depend on the number of eligible entries received.

Identity of Winners/Eligible Participants. Winners will be identified by the email account associated with the Facebook or Twitter account from which their Entry was submitted or the email account provided with a mail-in entry. An email account holder shall mean the natural person assigned to such email account by the internet access or online service provider or other organization responsible for assigning email addresses for the domain associated with such email account. Any issues regarding the identity of a Winner shall be resolved by Sponsor in its sole discretion. The Sweepstakes is only open to residents of the United States that are at least eighteen (18) years of age on their entry date and is not open to employees of Sponsor, their immediate family, any person domiciled with such employees, or any affiliates or subsidiaries of Sponsor.

Entry Ownership/Entrant Agreements. Entrants retain full ownership and copyrights to their Submission. However, by entering the Sweepstakes entrants grant Sponsor permission to use their Entries for promotional purposes on their respective social media channels with proper credit. Entrants also agree: (a) to be bound by these Official B&H $500.00 Gift Card Dash Sweepstakes Rules; (b) that any claims related to this Sweepstakes shall be resolved individually without resort to any form of class action and that awards, shall be limited to actual out-of-pocket costs incurred in entering the Sweepstakes, and shall not include incidental or consequential damages or attorneys fees; and (c) that any actual or perceived ambiguities in these rules shall be interpreted by Sponsor in their sole discretion.

Limitation of Liability/Sponsor Modification/Cancellation Rights/ Choice of Law/ Venue/ Winners List. Sponsor is not responsible for incomplete entries or for failure to receive entries due to technical failures or human error of any kind. Winners agree that Sponsor will have no responsibility for losses or damage of any kind resulting from the acceptance, possession, or use of the prizes. Except where prohibited, participation in the Sweepstakes constitutes entrant's consent to the publication of his or her name by Sponsor in any media for commercial or promotional purposes without limitation or further compensation subject to Sponsor's respective Privacy Policies. Sponsor may modify or discontinue the Sweepstakes at any time and may disqualify from the Sweepstakes any person it determines, in its sole discretion, to have attempted to or actually tampered with or otherwise abused any aspect of the Sweepstakes. Entrants agree that in the unlikely event a dispute arises in connection with this Sweepstakes, it will be governed by the laws of the State of New York and heard exclusively in a court of applicable jurisdiction in the County and State of New York irrespective of any choice of law provisions to the contrary. To receive names of the winners by U.S. mail, please mail a self-addressed stamped envelope to: B&H Foto & Electronics Corp., Attn: B&H $500.00 Gift Card Dash Sweepstakes, 440 Ninth Avenue, New York, NY 10001. Any Winners List request must be received by B&H within one (1) year of the date the Sweepstakes is conducted.

Let us know how to reach you if you win!

Privacy 100% guaranteed; email address for contact purposes only


Already have a B&H account? Just log in tomorrow to enter again!

$0 VA Sales Tax Collected on This Item
Add to Wish List Item in Wish List

QNAP TS-251+ overview

  • 1Description

Built around the need for increasing amounts of data storage, sharing, and multimedia processing, the TS-251+ 2-Bay Home and SOHO NAS Enclosure from QNAP provides a high-performance scalable storage solution for professional and home users. The TS-251+-2G runs the QTS 4.2 operating system and provides all-in-one server functionalities as well as features including Virtualization Station, which allows users to run VMs on the same device. It is also able to operate multiple isolated Linux systems, play 1080p videos and 7.1 channel audio via HDMI, transcode Full HD videos on-the-fly or offline, stream multimedia files via DLNA, AirPlay, Chromecast, and Bluetooth, scale up to 10 drives with the UX-800P expansion enclosure, and more.

The TS-251+-2G is powered by a 2.0 GHz Intel Celeron Quad-Core processor. The built-in 2GB of DDR3L RAM, which may be expanded to 8GB, and the 512MB of flash memory allow quick access to frequently-used files and programs. Network connectivity is achieved via the 2 x Gigabit Ethernet ports. RAID 0 and 1 are supported, which offer speed or data redundancy. There is also the option to set the TS-251+-2G as JBOD if you don't need RAID functionality.

This 2-bay enclosure has the ability to natively house both 3.5" or 2.5" SATA III and SATA II hard drives or SSD drives. To support both drive formats, screws are included to accommodate both drive sizes. Read speeds can reach up to 223 MB/s and write speeds can reach up to 225 MB/s, while data transfer speeds with AES 256-bit encryption can reach read speeds of up to 205 MB/s and write speeds of up to 178 MB/s. Using the two USB 3.0 and two USB 2.0 ports, this QNAP can be connected to other QNAP devices, such as UX-800P and UX-500P expansion enclosures, as well as other external drives.

The TS-251+-2G operates using a 60W power supply that operates using 100-240 VAC at 50-60 Hz. It is compatible with Windows, Mac, Linux, and UNIX. Included are two Ethernet cables, a power cord, an AC adapter, eight 3.5" HDD flat head screws, six 2.5" HDD flat head screws, and an IR remote control.

Quad-Core 64-Bit Intel Celeron CPU
The TS-251+-2G is powered by a 64-bit Intel Celeron Quad-Core 2.0 GHz processor and has 2GB of energy-efficient DDR3L RAM and dual gigabit LAN ports, delivering up to 225 MB/s read and write speeds with port trunking mode. The TS-251+-2G can also automatically increase the processor's clock rate from 2.0 GHz to 2.42 GHz when needed for CPU-intensive tasks. The TS-251+-2G supports AES 256-bit volume and folder encryption with transfer speeds of up to 205 MB/s, boosting system performance and security while ensuring the safety of sensitive personal data stored in the TS-251+
Use Your TS-251+ as a PC with QvPC Technology
QNAP's QvPC Technology consolidates a number of high-end technologies including VM integration, multimedia transcoding, HDMI output, cloud integration, and NAS connection technologies, allowing users to operate the TS-251+-2G as a PC when they plug in a keyboard, mouse, and HDMI monitor. With QvPC Technology, the TS-251+-2G is transformed into a cost-effective device with PC functionalities for users to directly access stored data, run multiple applications using Windows/Linux/UNIX/Android based VMs, surf the web, enjoy Full HD videos with Kodi, monitor surveillance live feeds from IP cameras in real time, and much more
Enjoy Videos on TV via HDMI with the Bundled Remote Control
QNAP HD Station integrates the Kodi media player and web browser. With HDMI connectivity, you can connect the TS-251+-2G to a HDTV to watch multimedia content on the big screen. The user interface and support for 7.1-channel audio passthrough bring smooth playback of 1080p videos. You can even watch YouTube videos, surf the web, and manage the TS-251+-2G using Google Chrome or Mozilla Firefox with multilingual keyboard input. HD Station supports multi-tasking and user authentication so only authorized users can access the stored data via HDMI monitors.

The TS-251+-2G is packed with the QNAP RM-IR002 remote control for you to control HD Station via the built-in IR receiver. You can also turn your mobile devices into remote controls by installing the Qremote app. HD Station also supports YouTube Pairing, allowing you to select a YouTube video on your smartphone, tablet, or computer and play it on your HDTV via the TS-251+-2G
Real-Time and Offline HD Video Transcoding
The TS-251+-2G delivers real-time Full HD video transcoding to convert your videos to formats that can be smoothly played on PCs, mobile devices, and Smart TVs. It allows for multiple devices to simultaneously view different videos stored on the TS-251+-2G with on-the-fly hardware accelerated transcoding, saving your time in converting videos to different formats for different devices.

With the benefits of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos via File Station, Video Station, or the Qfile app by selecting a pre-rendered lower-resolution video, saving system resources of the TS-251+-2G for other applications. The TS-251+-2G also allows you to set a dedicated folder for automatic video transcoding
Enjoy Media Freely with Multi-Zone Multimedia Control
Use your TS-251+-2G 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 from the TS-251+-2G to different rooms from a single device using Bluetooth and USB devices connected to the TS-251+-2G (for music streaming only), HDMI, DLNA, Apple TV, and Chromecast. Every room member in different zones can enjoy the convenience and simplicity for media playback and multimedia storage.

Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an iOS device to browse videos/photos and play on the TV via Apple TV, install the QAirplay and Chromecast apps from the QTS App Center to stream media content directly on a TV via Apple TV or Chromecast, or transform the TS-251+-2G into a powerful streaming machine with DLNA, Roku, Amazon Fire TV, and Google TV support with the support of Plex Media Server
Your Multimedia Hub
Stream your multimedia content on your HDTV using DLNA-compatible devices such as HDTVs, Smart TVs, Sony PS3, Sony PS4, Microsoft Xbox 360, and Hi-Fi systems to enjoy HD quality videos and high-resolution audio content such as DSD (Direct Stream Digital) audio format stored on the TS-251+-2G. You can also use the NAS as your Plex Media Server, which organizes all of your media and allows you to access all your movies and media on your mobile phones and tablets. The TS-251+-2G is a powerful streaming machine that can be accessed through DLNA, Roku (Qmedia app), Apple TV, Amazon Fire TV, and Google TV
QTS 4.2 Operating System
Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter and smoother. Its modern flat design streamlines loading times and the intelligent desktop allows you to quickly find desired functions, 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 operating efficiency. QTS breaks the barriers of devices, platforms, and geography to bring optimized cloud experiences to you, and incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, and more
Qsirch Built-In Search Function
Quickly and easily find documents, photos, videos, and music with Qsirch, QNAP's built-in NAS search application that lets you find what you need with a real-time, natural search. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, and Qsirch will display a list of matches, complete with thumbnails, as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a productivity boost that helps to reduce the amount of time spent looking for files on the NAS so you can focus on other tasks
Run Additional Operating Systems on the TS-251+
The Virtualization Station transforms the TS-251+-2G into a 2-in-a-box NAS that can function as an all-in-one NAS and a virtualization platform that supports multiple operating systems, fast VM creation, VM backup and restoration, VM import/export, snapshot, Device Management for centrally managing VM, and enables desktop operations on web browsers. With the easy-to-use interface, you can centrally manage all of the VMs created on the TS-251+-2G with minimal effort. You can also download VMs on demand from online VM markets and import them to the TS-251+-2G without any complex procedures
Container Station
QNAP Container Station integrates LXC and Docker lightweight virtualization technologies, allowing you to operate multiple isolated Linux systems on the TS-251+-2G as well as download apps from the built-in Docker Hub Registry. It supports container import/export and permission settings, and features an informative dashboard and flexible user interface for you to manage multiple containers
Cross-Platform File Sharing, Centralized Data Storage
The web-based File Station enables you to easily upload, download, and manage files on your TS-251+-2G wherever there is an Internet connection. Supporting file extraction, folder creation, and smart search for files and folders, the File Station also allows you to easily share files with friends and family via unique URLs, email, and a shared space. What's even better, you can also directly browse and transfer files between the TS-251+-2G and public cloud services like Google Drive, Dropbox, Microsoft OneDrive, Box, Yandex Disk, and Amazon Cloud Drive through File Station, and view files with Office Online and Google Docs or directly open them with a Google Chrome office extension
Backup Solutions to Secure Data
QNAP NetBak Replicator supports real-time and scheduled data backup on Windows including Outlook email archiving. Apple Time Machine is also supported to provide Mac OS X users with a solution to backup data to the TS-251+-2G. The front panel USB 3.0 port on the TS-251+-2G features a one-touch-copy function for you to instantly backup data on external drives to the TS-251+-2G with just one click, or alternatively to backup data from the TS-251+-2G to external drives. A wide range of third-party backup software such as Acronis True Image and Symantec Backup Exec are also supported
Disaster Recovery Solutions
The TS-251+-2G offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time and scheduled data backup to remote QNAP NAS or FTP servers and synchronizes files to remote folders from local folders with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained and for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-251+-2G also supports rsync protocol to backup data to remote servers on a scheduled basis. Data can also be backed up to and restored from a range of cloud storage services, including Amazon S3, Amazon Glacier, Microsoft Azure, ElephantDrive, Dropbox, Google Drive, Google Cloud Storage, and more
Volume and LUN Snapshot Simplifies Restoration
Not limited to high-end models, the TS-251+-2G brings the snapshot function for your flexible usage. QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily backup and restore data on the TS-251+-2G back to any point of time to prevent loss of important data. You can take up to 256 snapshots for both volumes and LUN, efficiently replicate volume/LUN snapshots to remote servers by copying only the changes made, and quickly clone a volume /LUN snapshot as a local volume without interrupting the current system operation. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even when the file is opened
Security Options
In open network environments, data on the connected devices may be exposed in a potential hack. The TS-251+-2G provides numerous security options, such as 2-step verification, encrypted access, IP blocking, and more. Administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-251+-2G is validated with military-level FIPS 140-2 AES 256-bit encryption, preventing sensitive data from unauthorized access and breach even if the hard drives or the entire system were stolen
Secure Access with VPN Server and VPN Client
The TS-251+-2G can be a VPN server with L2TP/IPsec, OpenVPN, and PPTP support, allowing you to securely access data shared within the private local network. The TS-251+-2G also supports VPN Client for PPTP and OpenVPN to protect your privacy during data transmission
File Synchronization Across Multiple Devices
With Qsync, your TS-251+-2G is turned into a safe data center for file synchronization. Any file uploaded to the TS-251+-2G will be made available for all linked devices, such as computers, laptops, and mobile devices. Qsync is especially useful for frequent travelers in managing files and ensuring that different devices have the most up-to-date files. Qsync provides multiple ways for file synchronization and group file sharing, enhancing the flexibility of team projects and collaboration. The centralized configuration 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
Comprehensive Surveillance Solution Providing 24/7 Security
The TS-251+-2G's Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 3,000 compatible IP camera models and expandable IP camera channel licenses. It supports real-time monitoring, as well as video and 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 the monitoring of cameras anytime, 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-251+-2G. The TS-251+-2G offers 2 free IP camera channels and you can expand up to 40 channels by purchasing additional licenses
Access and Enjoy with Your Mobile Devices
The TS-251+-2G is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile allows you to access, upload, download, manage, and share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an iOS device, users can also browse videos and photos stored on the TS-251+-2G and play on a TV via Apple TV. Qmanager lets you monitor and manage the TS-251+-2G remotely and efficiently without turning on your PC. You can take and share digital notes with Qnotes and enjoy and share music, photos, and videos on the TS-251+ anywhere and anytime with Qmusic, Qphoto, and Qvideo apps
Install-On-Demand Apps to Extend NAS Functionality
The TS-251+-2G has a built-in App Center that provides various install-on-demand apps developed by QNAP and third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, and much more. It is also a centralized location for managing and updating installed apps
Storage Capacity Expansion
The TS-251+-2G 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-251+-2G an ideal file center with large storage capacity for personal video collections.

With the support of QJBOD Express (JBOD enclosures roaming), you can just connect a large capacity QNAP expansion enclosure to the TS-251+-2G, and migrate data to another NAS through the JBOD enclosure without network connectivity.

The TS-251+-2G can support one UX-500P expansion enclosure with up to seven total hard drives and a raw capacity of 56TB, or one UX-800P expansion enclosure with up to ten total hard drives and a raw capacity of up to 80TB
Energy-Saving and Eco-Friendly
The TS-251+-2G utilizes a 22nm CPU and DDR3L RAM which feature low voltage and low power consumption, maintaining high performance in system operations with the benefit of energy-saving. Other eco-friendly designs include S3 sleep mode, HDD standby, scheduled power on/off, hard disk standby mode, and Wake on LAN. QNAP also packs the TS-251+-2G in an eco-friendly box to minimize the environmental impact
NAS Management Tools
The TS-251+-2G provides comprehensive system tools to increase management efficiency -

Instant Alert Notifications: With the SMTP and SMS settings on the Turbo NAS, system administrators will get notifications via SMS or email if an error occurs

Resource Monitor: Easily monitor CPU, memory, disk and network bandwidth usage, as well as currently-running Turbo NAS apps and services

Wake on LAN: Administrators can turn on the Turbo NAS via LAN to save energy and improve security

Scheduled Power On/Off: Administrators can turn on the Turbo NAS via LAN to save energy and improve security

S.M.A.R.T. and Advanced Hard Drive Health Scan (HHS): The Turbo NAS supports HDD S.M.A.R.T. (Self-Monitoring Analysis and Reporting Technology) which monitors the hard drive status, and sends out email notifications for administrators to take action. The HHD Health Scanning technology can also examine hard drive status and prevent possible data loss

Event Logs: The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet and saves the data, enabling centralized log management with greater efficiency
UPC: 885022009008
In the Box
QNAP TS-251+ 2-Bay Home and SOHO NAS Enclosure
  • 2 x Ethernet Cables
  • 8 x Flat Head Screws (for 3.5" HDDs)
  • 6 x Flat Head Screws (for 2.5" HDDs)
  • AC Adapter
  • Power Cord
  • IR Remote Control
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description

    QNAP TS-251+ specs

    Number of Bays 2 x 2.5"/3.5"
    Media Card Slots None
    Connections 1 x HDMI Type-A 
    2 x USB Type-A (USB 3.1 Gen 1)
    2 x USB Type-A (USB 2.0)
    2 x RJ45 (Gigabit Ethernet)
    Compatible Drive Interface SATA III
    RAID Modes RAID 0, 1, JBOD
    Hot-Swap Support Yes
    Total Raw Capacity None
    Type None
    Flash Memory 512 MB 
    Processor Intel Celeron Quad-Core
    Clock Speed Base: 2.0GHz / Maximum Boost: 2.42 GHz
    GPU Intel HD Graphics
    Total Installed Memory 2 GB DDR3L
    User-Replaceable Memory 1 x 2 GB
    Total Memory Slots 2 x SO-DIMM
    Supported Protocols AFP
    iSCSI LUN 256
    iSCSI Target 256
    Installed Operating System QTS 4.2
    File System Formats Supported External: EXT3, EXT4, FAT32, HFS+, NTFS
    Internal: EXT4
    Supported Browsers Chrome, Firefox, Internet Explorer, Safari
    Menu Languages Brazilian Portuguese
    Simplified Chinese
    Traditional Chinese
    Max Number of Printers Supported 3
    Power Consumption 18.09 W (Typical)
    10.56 W (Standby)
    Power Source AC Adapter
    AC Input Power 100 to 240 VAC, 50 / 60 Hz
    DC Input Power  60 VDC
    Encryption 128-Bit AES, 256-Bit AES, FIPS 140-2 Level 1
    Security Features Kensington Security Slot
    VPN Server Connections 30
    Operating Temperature 32 to 104°F / 0 to 40°C
    Operating Humidity 5 to 95%
    Cooling 1 x 70 mm Fan
    Audible Alarm Yes
    IR Sensor Yes
    Status Monitoring LED Indicator
    Dimensions 6.6 x 4.0 x 8.9" / 168.4 x 102.1 x 225.0 mm
    Weight 2.8 lb / 1.3 kg
    Packaging Info
    Package Weight 5.5 lb
    Box Dimensions (LxWxH) 10.8 x 9.4 x 8.1"

    QNAP TS-251+ reviews

    TS-251+ 2-Bay Home and SOHO NAS Enclosure is rated 4.4 out of 5 by 17.
    Rated 5 out of 5 by from I use it with Plex, itunes and video surveillance Plex works great, even transcoding 1080p works (it will stutter once saying the processor is too slow, then start up again without trouble). I upgraded the RAM to 8GB but have never seen it go above 1GB used. The video surveillance works very well, and there is an app you can install to sync the videos to your google drive account. That way in case the NAS is stolen you will still have the videos. Runs pretty quiet, but the hard drives make noise. Make sure you get hard drives that are compatible, there is a list on QNAP's website. I went with 2 4TB Seagate NAS drives configured as RAID1 and encrypted.
    Date published: 2016-07-22
    Rated 5 out of 5 by from This Is The One I just got this in and set it up. No calls to tech support. No problems. I even updated the firmware. I got this after returning a Thecus N4810. That was a problem from the gitgo. I'm using 2 WD Red Pro 1TB drives in a Raid 1 configuration. I setup a DHCP reservation on my router. I will be setting it up for backups in the next day or so. If anything unexpected happens, I'll update this review. If you want NAS storage on your home or small business network, this is ideal. I'm not using any of the numerous media functions or aps. I just wanted network storage.
    Date published: 2017-09-12
    Rated 5 out of 5 by from The little NAS that can do it I purchased this Qnap to replace my TS-231, this model runs Plex theater with no issues and it can run Linux that can act as a stand alone PC which can run Kodi. I could have three to four devices accessing this model and it barely breaks a sweat with the CPU load at 20 percent or less. Running the Intel Celeron makes a huge difference. I could have opted for the newer model the TS-253A that has 4K transcoding but this model does the job just fine. I also upgraded the memory to 8 gigs. So much you can do with this sever, I am happy with this purchase.
    Date published: 2016-11-30
    Rated 4 out of 5 by from Works Great Bought this primarily to act as media library for music (FLAC files) and photos. Very happy with it so far. Primarily chose this model for the HDMI connection, but probably wouldn't bother in hindsight - the mobile QNAP apps work fine with DLNA streaming (although haven't done much with video). It does require a bit of tinkering - my knowledge of networking is fairly rudimentary, but I didn't have any insurmountable problems. The apps and support are OK, but might be challenge for someone with limited experience (hence 4 instead of 5 stars). Overall, very happy with purchase.
    Date published: 2018-04-11
    Rated 5 out of 5 by from Perfect for PLEX I bought this specifically to stream over 3TB of music, movies and pics over PLEX using PLEX Media Server. I am using 2x 4TB WD Red Pro NAS drives (128 MB Cache, 7200 RPM). I have never seen it use more than 1.2 GB of RAM but for $56 I upgraded the memory to 8GB. Piece of cake and only took 10 minutes. The interface is beautiful (Linux) and it barely uses any CPU when streaming 1080p movies to the Roku 3s via PLEX. I can't even think of any cons. If you want 4k, then buy the model up, but for the money this is an unbelievably amazing NAS that integrates seamlessly with PLEX.
    Date published: 2016-12-18
    Rated 5 out of 5 by from Great little product! I bought this to replace a Windows 10 machine that had to be on pretty much all the time. Frequent Windows updates forced it to reboot too frequently and at some point, when we wanted to access our files, there wasn't any response. So you log on your homemade Windows file server, and It ask you to reboot and loose time, and then load all the un-necessary or useless services... This was getting too annoying. Having heard of QNAP many years ago, I decided to get this TS-251+. We all know that in the computer industry, noting is perfect. It all depends on what you need it for and accepts the tradeoffs. I have no regrets at all! it sets up easily, recognizes the HD as I put them in (Need to reboot the unit if you add another disk and want to sync the RAID 1 for mirroring) but all ends well. it is fast, lots of features, silent, small, and can connect a keyboard and TV/monitor directly. I will only use the HDMI to connect to my Home theater. Great purchase!
    Date published: 2017-01-01
    Rated 5 out of 5 by from Plex, Online Managment & 1080p Transcoding Plex works great, even trans-coding 1080p works fairly smoothly. Currently only running two 2TB WD RED HDD's, running very smoothly in RAID 1 with the stock 2GB of memory. Plan to upgrade to bigger HDD's soon.
    Date published: 2016-09-07
    Rated 4 out of 5 by from QNAP NAS TS-251+ This is a good buy. The machine is everything I need. From media server with Plex on my Apple TV, to Web Server with Joomla CMS, and more.. Haven't got time to install Windows 10/Linux/Mac/virtual stations, and video surveillance but eventually will get there to complete the last star survey. Solid technology, support is prompt although i still have problem with Wan access.� I have been a customer with BHPhotovideo since 2009, but this transaction really makes me very happy.
    Date published: 2018-03-15
    • y_2018, m_11, d_15, h_17
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.9
    • cp_1, bvpage1
    • co_hasreviews, tv_0, tr_17
    • loc_en_US, sid_1184552, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
    • clientName_bhphotovideo
    Be the first to review this item

    QNAP TS-251+ Q&A

    QNAP TS-251+ accessories

    See any errors on this page? Let us know.