QNAP Silent NAS Series (HS-251+ (2GB))

Product Model: HS-251+ (2GB)

2-bay TurboNAS, fanless, Intel Celeron quad-core 2.0GHz (up to 2.42GHz), 2GB RAM, 2xGbE LAN, SATA HDDs, USB 3.0, HDMI

    Silent & dust-free

    The HS-251, powered by dual-core Intel® Celeron® 2.41GHz processor, was created as a silent NAS solution that allows users to enjoy files and media with no distractions, providing a perfect match for home theater enthusiasts and audiophiles looking to maximize their audiovisual experience and users who wish to constantly run their systems without any background noise. Coupled with the support of HDMI connectivity for 1080p video playback and hardware transcoding capability, the HS-251 is an ideal companion at home for multimedia entertainment. Being fanless, the HS-251 has no internal moving parts for improved reliability and remains clean and dust-free even after long-term usage. The HS-251 is best used with SSDs or WD® Red™ & Seagate® NAS drives as a reliable storage solution.

    Modern & stylish

    Created for the living room with a revolutionary fanless architecture, the HS-251 features a modern set-top design that fits alongside your HDTV, game consoles and other elements of your digital lifestyle. Underneath the stylish & compact brushed metal aluminum body, the HS-251 is packed full of cutting-edge features & apps to provide day-to-day entertainment, storage, and backup needs. The HS-251 is easy to use and maintain. With its accessible layout, adding and removing drives are remarkably easy even for beginners.

    Enjoy the HS-251 with the intuitive QTS

    Powered by QNAP’s new QTS’s user interface, browsing the HS-251’s wide range of features has never been easier. Featuring a multi-window operation with a familiar user interface, QTS makes controlling every aspect of your HS-251 – from system operations to multimedia features – fully accessible and easy to use. QTS enables you to:

    • Centralize your data, files and backups.
    • Sync files across computers, tablets and mobile devices, and share files across different groups and communities.
    • Collect, enjoy and share your large photo, music and video collections.
    • Stream HD movies & family videos to various network players.
    • Access, manage and enjoy all your files with your tablets & smartphones.
    • Expand the functionality of the HS-251 by installing more than 100 apps on demand from the QNAP App Center.

    Build your media center and access anywhere

    From enjoying your media on HDTVs, smartphones and tablets to syncing files between different computers and mobile devices, the HS-251 can be depended on to be the cornerstone of all your home digital needs and becomes your personal cloud so you are always connected to your data. Take advantage of the myQNAPcloud service, which allows you to remotely access your HS-251 wherever you are. Instantly stream or share your multimedia contents and share them with your friends.

    Enjoy best audiovisual experience with HD Station via HDMI-out

    QNAP’s HD Station supports the 3rd-party Kodi media player and web browser. With HDMI connectivity, you can connect the HS-251 to a HDTV or a Hi-Fi amplifier to enjoy your rich multimedia content with the best audiovisual experience*. You can also turn your mobile devices into remote controls by installing the Qremote app or use MCE remote controls via the built-in IR receiver of the HS-251.

    * The quality of video and music delivery can vary according to hardware and network environments

    Please note: The HS-251-1G only supports up to Kodi v14 due to RAM limitations..

    Archive your photo memories. Share your life.

    The HS-251 acts as your photo vault for you to back up your favorite photos. The Photo Station makes photo sharing simple, and you can designate your own access right controls. Simply upload your photos to the HS-251 to create & organize your photo albums through a web browser, and share with your family and friends through social networking sites such as Facebook, Google+, Twitter and Pinterest. Your mobile devices are useful too, allowing you to instantly upload photos to the HS-251 with the Qfile mobile app available on iOS® or Android™ devices. Now, you can just take as many photos as you want and trust your precious photo collections with the HS-251!

    Build your home music library and enjoy music anywhere

    The Music Station helps categorize your music collection, and displays album covers to easily organize your personal playlists. Through the Music Station you can enjoy your music anywhere anytime with a few clicks. Thousands of local & global online Internet radio stations are built-into Music Station for you to enjoy as well.

    • Stream music and high-resolution audio (DSD) content to your DLNA Hi-Fi system and indulge in a high-quality sound experience.
    • Stream music via AirPlay to compatible devices.
    • Listen to your music on mobile devices through the Qmusic app.

    Back up & protect your data

    The high performance & cross-platform compatibility of the HS-251 allows you to centralize and protect your important with a range of backup options. Time Machine is fully supported to help Mac OS X users create a more efficient and convenient backup solution. The HS-251 works with Time Machine wirelessly over the same network so you no longer need an external drive. QNAP NetBak Replicator is QNAP’s license-free backup software that allows you to back up your files from multiple Windows PCs in real time or by schedule. You can also gain a disaster recovery solution with the RTRR (Real Time Remote Replication) feature by replicating data in multiple shared folders from one NAS to another NAS over the network to ensure the safety of your important data. Your data can also be easily backed up to a FTP server, external disk, or to online cloud storage services.

    Dropbox-like file sync across computers & mobile devices

    With Qsync, your HS-251 is turned into a safe data center for file synchronization. Any file uploaded to the HS-251 will be made available for all linked devices including 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 of file synchronization and group file sharing, greatly enhancing the flexibility of team projects and collaboration.

    Fanless, revolutionary thermal design and power efficient

    Instead of a fan, the HS-251 features a remarkable thermal design that intelligently dissipates heat, allowing us to create a sleek, modern design without the bulk of conventional NAS systems. This innovative thermal design helps keep the HS-251 running smoothly even under the heaviest loads. The HS-251 is also eco-friendly, with power saving features including hard disk standby when not in use, and power management scheduling options.

    24/7 download center

    The HS-251 is a perfect download center for high speed BT, Magnet, PT (Private Trackers), eMule, FTP, and HTTP downloads. After the download tasks are set, you can turn off your computer, and the HS-251 will continue downloading as many HD videos as you want. With the QGet utility you can manage your download tasks on multiple NAS devices remotely over local networks or the Internet.

    Surveillance Station – protect your home and valuables

    The HS-251 provides a professional Surveillance Station to view IP cameras from your web browser and mobile devices. With the user-friendly interface and the expandable IP camera channel licenses, the Surveillance Station builds a professional surveillance center for you to safeguard your property and valuables. The HS-251 also supports UVC-compliant (USB Video Class) USB webcams, allowing users to use the Surveillance Station to record & playback videos and build a budget-saving surveillance system for home environments by installing the QUSBcam app from the QNAP App Center.

    A private space for work & sharing

    Notes Station – A handy notepad on your private cloud

    The Notes Station provides a private and secure way to share and collaborate on digital notes. With just a few steps it’s easy to create notes from web pages or by importing from HS-251, edit with the intuitive web editor, and even create to-do lists and calendar alerts.

    Signage Station – Creatively present your animated content

    With the Signage Station, it’s easy to create content for a wide range of materials such as personal animated resumes or life memory books. The Signage Station is a great tool to give life to your resume for you to creatively present your backgrounds and accomplishments with rich media content. You can also create personal memory books to edit and record each life event. The iArtist Lite application with intuitive editing tools helps you to easily create these signs with drag & drop tools. Your creativity can now travel around the world in a few simple steps.

    Access, use, sync and enjoy with your tablets and smartphones

    The HS-251 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 everything in your pocket. Music, photos and videos can be streamed, enjoyed and shared anytime, anywhere. Qmanager also lets you monitor and manage the HS-251 remotely and efficiently without turning on a PC, while Qmusic allows you to stream your music stored on your HS-251 anytime & anywhere, and download to enjoy offline.

    Add near-unlimited functionality with QNAP’s App Center

    In addition to these preinstalled apps, the HS-251 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, downloading, entertainment, and much more. It is also a centralized location for managing & updating installed apps. QNAP’s development platform embraces the open source spirit and allows you and other developers to create their own apps, adding near-unlimited opportunities for the HS-251.

    Economical storage expansion with scale-up solution

    The HS-251 offers a high performance yet affordable storage solution to fulfill the needs of archiving rapidly growing data & large files. The HS-251 supports online capacity expansion by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on demand, making the HS-251 an ideal file center with large storage capacity for personal video collections.

    The maximum raw storage capacity available by connecting a QNAP expansion enclosure:

    Turbo NAS Model QNAP Expansion Enclosure Max. No. of Expansion Enclosure Total HDD No. (NAS + Enclosure) Max. Raw Capacity (TB)*
    HS-251 UX-800P 1 10 50
    UX-500P 1 7 35

    *The maximum capacity is calculated by using 5TB HDDs.

    NAS management can be just that easy.

    The HS-251 provides comprehensive system tools to increase management efficiency.

    Administrators can turn on the Turbo NAS within LAN. It saves more energy and improve security.

    Administrators can flexibly set up the time of turning on/off for the Turbo NAS, maximum 15 sets of schedules are allowed for turning on, off, or rebooting.

    Hardware Specifications

    CPU Intel® Celeron® 2.41GHz dual-core processor (burst up to 2.58GHz)
    DRAM HS-251-2G: 2GB DDR3L RAM
    HS-251: 1GB DDR3L RAM
    Flash Memory 512MB DOM
    Hard Disk Drive 2 x 3.5” or 2.5” SSD or NAS Hard Drives

    1. The system is shipped without HDD.
    2. For the HDD compatibility list, please visit www.qnap.com/compatibility
    Hard Disk Tray 2 x Hot-swappable tray
    LAN Port 2 x Gigabit RJ-45 Ethernet port
    LED Indicators Status, LAN
    USB 2 x USB 3.0 port
    2 x USB 2.0 port
    Support USB printer, pen drive, and USB UPS etc.
    HDMI 1
    Buttons Power/Status, reset
    Alarm Buzzer System warning
    IR Receiver MCE-compatible
    Form Factor Compact
    Dimensions 41.3 (H) x 302 (W) x 220 (D) mm
    1.62 (H) x 11.89 (W) x 8.66 (D) inch
    Weight Net: 1.56 kg / 3.44 lb
    Gross: 2.62 kg / 5.78 lb
    Power Consumption (W) HDD standby: 8.96W
    In operation:15.64W
    (with 2 x 3TB WD NAS HDD installed)
    Temperature 0-40˚C
    Humidity 5~95% RH non-condensing, wet bulb: 27˚C
    Power Supply External Power Adapter, 60W, 100-240V
    Secure Design Kensington security slot for theft prevention

    Software Specifications

    Operating System
    QTS 4.1 (embedded Linux)
    Storage Management
    • Online Volume Expansion
    • Single Disk, JBOD, RAID 0, 1
    • Online RAID Capacity Expansion
    • Online RAID Level Migration
    • Bad block scan and hard drive S.M.A.R.T.
    • Bad block recovery
    • RAID recovery
    • Bitmap support
    Supported Client OS
    • Windows XP and Windows Server 2003 onward, Apple Mac OS X onward, Linux & UNIX
    Power Management
    • Wake on LAN
    • Internal hard drive standby mode
    • Scheduled power on/off
    • Automatic power on after power recovery
    • USB andnetwork UPS support with SNMP management
    • System sleep mode (S3)
    Supported Browsers
    • Chrome, IE 10+, Firefox, Safari
    Access Right Management
    • Batch users creation
    • Import/export users
    • User quota management
    • Local user access control for CIFS, AFP, FTP, and WebDAV
    • Application access control for Photo Station, Music Station, Video Station, and Multimedia Station
    • Subfolder permissions support for CIFS/SMB, AFP, FTP, and File Station
    Multilingual Support
    • Chinese (Traditional & Simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Romanian, Russian, Spanish, Swedish, Thai, Turkish
    myQNAPcloud Service
    • Private cloud storage and sharing with myQNAPcloud id (qid)
    • Free host name registration (DDNS)
    • Auto router (via UPnP) configuration
    • Web-based file manager with HTTPS 2048-bit encryption
    • Cloudlink for remote access without complicated router setup
    • myQNAPcloud connect for easy VPN connection (WindowsVPN utility)
    File System
    • Internal hard drive: EXT4
    • External hard drive: EXT4, EXT3, NTFS, FAT32, HFS+
    • Syncs files among multiple devices with SSL support
    • Selective synchronization for syncing specific folders only
    • Share team folder as a file center for team collaboration
    • Shares files by links via e-mail
    • Policy settings for conflicted files and file type filter support
    • Version control: up to 64 versions.
    • Incremental synchronization for HDD space saving
    • Supports Windows&MacOS
    • TCP/IP: IPv4 & IPv6
    • Dual Gigabit NICs with jumbo frame (failover, multi-IP settings, port trunking/NIC teaming )
    • Service binding based on network interfaces
    • Proxy client, proxy server
    • DHCP client, DHCP server
    • Protocols: CIFS/SMB,AFP (v3.3), NFS(v3), FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, and SMSC
    • UPnP& Bonjour discovery
    • USB Wi-Fi adapter support
    Web Administration
    • Multi-window, multi-tasking based system management
    • Personalized desktop
    • Smart toolbar and dashboard for neat display on system status
    • Login screen with personalized photo-wall style •Smart fan control
    • Dynamic DNS (DDNS)
    • SNMP (v2 & v3)
    • Resource monitor
    • Network Recycle Bin for File Deletion via CIFS/SMB, AFP and File Station
      – Automatic Cleanup
      – File Type Filter
    • Comprehensive logs (events & connection)
    • Syslog client/server
    • System settings backup and restore
    • Restore to factory default
    • Mobile app: Qmanager for remote system monitoring & management
    • Network access protection with auto-blocking: SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP
    • CIFS host access control for shared folders
    • FIPS 140-2 validated AES 256-bit volume-based data encryption*
    • AES 256-bit external drive encryption*
    • Importable SSL certificate
    • Instant alert via E-mail, SMS, and beep
    File Server
    • File Sharing across Windows, Mac, and Linux/UNIX
    • Windows ACL
    • Advanced folder permission for CIFS/SMB, AFP, FTP
    • Shared folder aggregation (CIFS/SMB)

    Powerful All-in-one server

    FTP Server
    • FTP over SSL/TLS (Explicit)
    • FXP supported
    • Passive ftp port range control
    • Streams videos, photos and music from NAS to Apple TV via Qfile or Media Streaming add-on.
    File Station
    • Supports ISO Mounting (Up to 256 ISO Files)
    • Support thumbnail display of multimedia files
    • Supported share download link and upload link
    • Drag-n-drop Files via Chrome and Firefox Browsers
    • Photo, music, and video preview and playback withhardware acceleratedtranscoding
    • File Compression (ZIP or 7z)
    Signage Station
    • Support dynamic content includes video, image,music, and text message
    • Support multi users collaboration
    • Support searching keywords,
    • Support email and social network sharing
    • Support design software – iArtist Lite
    • Support account authority management
    • Support various browser playback ( Chrome, Firefox, IE, Safari)
    • Support most viewed, latest released and different categories content list
    Transcode Management
    • Transcodevideo files to 240p, 360p, 480p, 720p and 1080p resolution
    • Automatic video transcoding for watched folders
    • Hardware accelerated transcoding support
    Download Station
    • PC-less BT, FTP/FTPS, and HTTP/HTTPS download (up to 500 Tasks)
    • BT download with Magnet Link and PT support
    • Scheduled download and bandwidth control
    • RSS subscription and download (broadcatching)
    • Bulk download with wildcard settings
    • BT search
    • Proxy support for BT download
    • PC utility: Qget for downloads browsing and management
    • Mobile app: Qget for downloads browsing and management
    Backup Station
    • Remote replication server (over rsync)
    • Real-time remote replication (RTRR) to another QNAPNAS or FTP server
    • Works as both RTRR server & client with bandwidth control
    • Real-time & scheduled backup
    • Encryption, compression, file filter, and transfer rate limitation
    • Encrypted replication between QNAPNASservers
    • Desktop backup with QNAPNetBakReplicator for Windows
    • Apple Time Machine backup support
    • Data backup to multiple external storage devices
    • Synchronizes with cloud storage: Amazon S3, ElephantDrive, Dropbox, and GoogleDrive
    • Third party backup software support: Veeam backup & replication, AcronisTrue Image, Arcserve backup, emc retrospect, Symantec Backup Exec, etc.
    HD Station
    • Playbacks videos, music, photos on tv with Kodi via hdmi output
    • Watch various online contents such as Flickr, Picasa, Shoutcast, etc.
    • Web browser
    • Supports USBU.S. keyboard and mouse
    • Supports QNAPQremote app and the official Kodi remote app

    The playback and quality of some video files may be affected due to the current CPU and GPU’s decoding capability.

    Up to 7.1 channel audio passthrough can be supported

    Cloud Backup Station
    • Amazon S3
    • Amazon Glacier
    • Webdev-based cloud storage
    • Microsoft Azure
    • Open Stack
    Surveillance Station
    • Supports over 2,100 ip cameras
    • Includes 2 free camera licenses, up to 24 camera channels via additional license purchase
    • Instant playback to check the recent event
    • Online editing to edit cameras when live view
    • Visual aid by e-map
    • Playback and speed control by shuttle bar
    • Video preview on playback timeline
    • Intelligent video analytics (iva) for advanced video search
    • Surveillance client for Mac
    • Mobile surveillance app: vmobile (iOS and Android)
    • Mobile recording app: vcam (iOS and Android)
    Print Server
    • Maxnumber of printers: 3
    • Print job display and management
    • IP-based and domain name-based privilege control
    Notes Station
    • Take notes of everything on your private cloud
    • Collaborate notes with multi users
    • Support graphical editor for note editing
    • Integrate with NAS file system: insert attachment or image from NAS file system
    • Support event calendar and to-do list
    • Support image editor: a easy way to highlight the focus in your image
    • Support note publishing with a single link
    • Support key word search
    • Provide Chrome Extension: Notes Station Clipper
      • Clip web page contentto your note
    Photo Station
    • Show photos in thumbnails, list, timeline, or folder view
    • Supports virtual/smart album
    • Validity control for sharing albums
    • Tags photos with text, color, and rating
    • Slideshows with background music and different transition effects
    • Animated thumbnails for videos
    • Geotags photos and display them on Google maps
    • Shares slideshows link to social websites or through email
    • Supports Facebook friends login
    • Supports modification on photo taken date
    VPN Server
    • Secure remote access: PPTP &OpenVPN VPN services
    • Max number of clients: 30
    Music Station
    • Plays or Shares Music Collections with Web Browser
    • Automatic Classification via Media Library
    • Supported audio format: AIFF, APE, FLAC, M4A, M4A Apple Lossless (ALAC), MP3, Ogg Vorbis, WAV (PCM, LPCM),WMA, WMA PRO, WMA VBR
      * DRM encryption format is not supported.
    • Internet Radio (MP3)
    • Up to 8 Music Alarms
    Domain Authentication Integration
    • Microsoft Active Directory (AD)
    • LDAP server, LDAP client
    • Domain users login via CIFS/SMB, AFP, FTP, and File Station
    iTunes Server
    • Audio and Video Sharing for Windows& Mac iTunes
    App Center
    • More than 100 official and community software add-ons (ex: Dropbox, Google Cloud Storage Sync, McAfee, WordPress, HappyGet II, etc.)
    Video Station
    • Show photos in thumbnails, list, timeline, or folder view
    • Supports virtual/smart collection
    • Validity control for sharing collections
    • Tags videos with text, color, and rating
    • Animated thumbnails for videos
    • Shares video collection link to social websites or through email
    • Sorting videos automatically into defined classifications
    • Display movie information from IMDB
    Virtualization Station
    • Support one Virtual Machine (VM) creating to run an operating system such asWindows, Linux, Unix.
    • VM import from Virtual Appliances
    • VM export into a virtual appliance in OVF / QVM format
    • VM clone
    • VM snapshot
    • HTML5 based shared remote console
    DLNA Server
    • Supports DLNA/UPnP TVs and Players such as PlayStation 3 and Xbox 360
    • Supported audio format: AIFF, APE, DSD (DSF, DFF), FLAC, M4A, M4A Apple Lossless (ALAC), MP3, Ogg Vorbis, WAV (PCM, LPCM), WMA, WMA PRO, WMA VBR
      *DRM encryption format is not supported.
    • Support CUE indexing file for APE, FLAC audio format.
    • Video and Audio On-the-fly Transcoding
    Mobile App
    • Qfile: iOS, Android Phone, window phone
    • Qfile HD: iPad version
    • Qmanager: iOS, Android Phone
    • Qmusic: iOS, Android Phone
    • Qremote: iOS, Android Phone
    • Qget: Android Phone
    • Vmobile: iOS, iPad, Android Phone

    (1). Not all services are supported.
    *The data encryption functions may not available in accordance with the legislative restrictions of some countries.

    Design and specifications are subject to change without notice.