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QNAP TS-251+ (Plus Series) |
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{2jtab:Overview} QNAP TS-251+High-performance Intel quad-core NAS supporting HDMI, transcoding, and virtualization for homes and businesses
Facing the increasing demand for data storage, sharing and multimedia processing, more and more users are looking for a NAS system with good performance and an affordable price tag. The Intel® quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization and sharing, remote access and multimedia applications, and is ideal for users to create a secure private cloud to access their data easily.
Quad-core 64-bit Intel® Celeron® CPU for exceptional performanceThe TS-251+ is powered by a 64-bit Intel® Celeron® quad-core 2.0GHz processor and has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) and dual Gigabit LAN ports, delivering up to 225 MB/s read & write speeds with port trunking mode. The TS-251+ can also automatically increase the processor's clock rate from 2.0GHz to 2.42GHz when needed for CPU-intensive tasks. The TS-251+ supports AES 256-bit volume & folder encryption with transfer speeds of up to 205 MB/s, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251+.
*Tested in QNAP Labs. Figures may vary by environment. Test Environment: Client PCs: QTS 4.2 - Simple and efficientThanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother and spectacular. 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.
Cross-platform file sharing, centralized data storageThe TS-251+ supports SMB/CIFS, NFS, and AFP protocols for file sharing across Windows®, Mac® and Linux®/UNIX®. Data, logs and ISO image of CDs and DVDs can be centrally stored in the TS-251+ and protected by an integrated antivirus solution.
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| NAS Model | Raid Expansion Enclosure | No. of RAID Expansion Enclosure |
Total HDD No.(NAS + Enclosure) |
| TS-251+ |
UX-800P | 1 | 10 |
| UX-500P | 1 | 7 |
*To expand the storage space with an UX expansion enclosure, please create a separate static volume or storage pool on the UX expansion unit.
**RAID groups of storage pools cannot cross multiple enclosures.
Energy-saving & eco-friendly
The TS-251+ utilizes a 22nm CPU and DDR3L RAM which feature low voltage, 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+ in an eco-friendly box to minimize the environmental impact.
{2jtab:Features}
File Station integrated with cloud services
The web-based File Station enables you to easily upload, download, and manage files on your TS-251+ 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 colleagues and friends via unique URLs, email, and a shared space. What's even better, you can also directly browse and transfer files between the TS-251+ 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.
Run additional operating systems on the TS-251+
The Virtualization Station transforms the TS-251+ 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 & 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+ with minimal effort. You can also download VMs on demand from online VM markets and import them to the TS-251+ without any complex procedures.
Container Station – LXC and Docker® Containers inclusive
QNAP Container Station exclusively integrates LXC and Docker® lightweight virtualization technologies, allowing you to operate multiple isolated Linux® systems on the TS-251+ 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. You can experience the amazing Container Station and enjoy the playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which allows you to directly view, edit and store files of various types anytime on your NAS, including Office documents, images and text files.
Enjoy media freely with multi-zone multimedia control
Use your TS-251+ 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+ to different rooms from a single device using Bluetooth®& USB devices connected to the TS-251+ (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®, or transform the TS-251+ into a powerful streaming machine with DLNA®, Roku®, Amazon® Fire TV, and Google TV™ support with the support of Plex Media Server.
*To stream multimedia via Chromecast, you must first install the multimedia extension pack from the QTS App Center.
Qsirch – A smarter, faster way to search
Quickly and easily find documents, photos, videos, and music with Qsirch, QNAP's new built-in NAS search application lets you find what you need by 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 huge productivity boost that greatly reduces the amount of time spent looking for files on the NAS so you can focus on other tasks.
Disaster recovery solutions bring peace of mind
The TS-251+ 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+ also supports rsync protocol to back up 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 & LUN snapshot simplifies restoration
Not limited to high-end models, the TS-251+ brings the highly-anticipated snapshot function for your flexible usage.QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily back up and restore data on the TS-251+ back to any point of time to prevent loss of important data. You can take up to 256 snapshots per volume or 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.
Note: Snapshot function requires a minimum 4GB RAM.
Comprehensive surveillance solution providing 24/7 security
The TS-251+'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, 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 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+. The TS-251+ offers 2 free IP camera channels and you can expand up to 40 channels by purchasing additional licenses.
{2jtab:Utilities}
QNAP Utilities
Get more from your NAS
Discover new and convenient ways of using your NAS with QNAP Utilities. From quick set up, to easy access, secure back ups, fast restoration, simple file sharing and synchronization - there's a utility for all of your everyday tasks. There are also specialized utilities to assist with optimal management of virtualization environments and surveillance systems. Check out the QNAP Utilities now.
Qfinder Pro
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Qfinder Pro, available for Windows, Mac and Ubuntu, allows you to quickly find and easily access all QNAP NAS over the same LAN. Windows version further provides “Storage Plug & Connect” feature, making QNAP NAS as a network drive or virtual disk to the PC for convenient data storage. Chromebook users can download Qfinder Pro from the Chrome Web Store to enjoy seamless connection to the QNAP NAS within seconds.
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myQNAPcloud Connect
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myQNAPcloud Connect is designed for Windows users to access the published services of the QNAP NAS quickly and securely over the Internet via VPN. Through myQNAPcloud Connect, you can easily manage files by drag-and-drop within Windows Explorer.
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Qsync
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Qsync enables automatic file synchronization across different devices. Simply drag and drop files in the “Qsync folder,” data on devices linked with the NAS is updated simultaneously when changes are made. Additional sync modes, such as Smart Sync or Advanced Selective Sync, allow users to only sync selective data or folders. You can also create download links to share files with others without them having to create a user account for download.
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NetBak Replicator
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QNAP NetBak Replicator features real-time synchronization, scheduled and auto backup of the entire disk drives, documents, multimedia files and e-mails from multiple Windows PCs to QNAP NAS. It also supports backing up to a remote server via FTP and WebDAV over the Internet.
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vSphere (Web) client plug-in
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QNAP NAS supports vSphere Client plug-in that allows direct management of the VMware datastores on the NAS from the vSphere client console. In a large-scale virtual server environment, management is centralized and straightforward. Administrators can easily control the status of the QNAP NAS and datastores and create additional datastores to multiple ESXi hosts within just a few clicks.
Limitations: This utility is only available for Enterprise and SMB-class models. |
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Q'center Virtual Appliance
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Q’center is a powerful centralized QNAP NAS management system. The Q’center Virtual Appliance can be deployed in Microsoft Hyper-V or VMware ESXi to increase system flexibility and connectivity for large storage environments.
With Q’center, users can view the status and system information of multiple QNAP NAS on a single platform, at the same time inspecting system resource usage, monitoring disk/ volume health and performing other management tasks. With these features on Q’center, IT administrators and QNAP NAS users can better allocate system resource and plan for future capacity.
Limitations: Minimum requirements: 108 GB free disk space, 1 GB memory and 4 virtual CPUs Supported platforms: VMware ESXi (ESXi 5.0, ESXi 5.1, ESXi 5.5), VMware Fusion 7, VMware Workstation 11, Microsoft Windows Server 2012 R2 with Hyper-V 3.0. |
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QNAP Snapshot Agent
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The Storage Manager's Snapshot function supports iSCSI LUNs to rapidly back up and restore data. When creating a LUN snapshot, QNAP Snapshot Agent for Windows Server or VMware vCenter allows the NAS to communicate with the remote server when taking snapshots and ensures Application-consistent LUN snapshots.
With Q’center, users can view the status and system information of multiple QNAP NAS on a single platform, at the same time inspecting system resource usage, monitoring disk/ volume health and performing other management tasks. With these features on Q’center, IT administrators and QNAP NAS users can better allocate system resource and plan for future capacity.
Limitations: For Snapshot Agent's system requirements and limitations, please refer to the Application Note. |
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QVR Client
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Available: |
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QNAP QVR Client is a client application that allows users to easily configure recording settings of the IP cameras, while also providing local or remote access to QNAP NAS for video monitoring and playback.
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{2jtab:Specifications}
Hardware Spec.
| CPU | Quad-core Intel® Celeron® 2.0GHz (burst up to 2.42GHz) |
| Floating Point Unit | V |
| GPU | Intel® HD Graphics |
| Hardware-Acclerated Transcoding | V |
| Memory | System memory: TS-251+-2G: 2GB DDR3L RAM (1 x 2GB) TS-251+-8G: 8GB DDR3L RAM (2 x 4GB) Total memory slots: 2 SODIMM Expandable up to: 8 GB NOTE: 1. When installing two memory modules, please ensure that they are the same size and ideally use the same type of RAM for both memory slots. 2. For the information of RAM module installation and compatible NAS models, please refer to the QNAP RAM Module Installation Guide |
| Flash Memory | 512MB |
| Drive | 4 x 2.5" or 3.5" SATA 6Gb/s, 3Gb/s HDD or SSD; hot swappable trays NOTE: For the HDD compatibility list, please visit https://www.qnap.com/compatibility |
| Expansion Unit | Max. 1 (UX-800P, UX-500P) |
| Gigabit LAN Ports | 2 |
| USB | 2 x USB 3.0 (Front: 1, Rear: 1) 2 x USB 2.0 (Rear) |
| IR Receiver | Yes (QNAP RM-IR002 remote control) |
| HDMI | 1 |
| LED Indicators | Power/Status, LAN, USB, HDD1-2 |
| Buttons | Power, Reset, USB Auto Copy |
| Alarm Buzzer | System warning |
| Form Factor | Tower |
| Dimensions (HxWxD) | 169 x 102 x 219 mm 6.65 x 4.02 x 8.62 inch |
| Weight (Net / Gross) | 1.28 kg (2.82 lbs) / 2.32 kg (5.11 lbs) |
| System Fan | 1 x 7cm, 12V DC |
| Kensington Security Slot | 1 |
| Power Supply | External Power Adapter, 60W, 100-240V |
| Power Consumption (W) | S3 sleep: 0.57 HDD standby: 10.56 In operation (typical): 18.09 |
| Sound Level* | Sound pressure (LpAm) :15.4 dB(A) |
| Temperature | 0 - 40 °C |
| Humidity | 5~95% RH non-condensing, wet bulb: 27˚C |
Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications.
Warning: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
* Sound Level Test Environment:
Refer to ISO 7779 ; Maximum HDD loaded ; Bystander Position ; Average data from 1 meter in front of operating NAS.
Designs and specifications are subject to change without notice.
Software Spec.
| Operating System |
| QTS 4.3 (embedded Linux) |
| Power Management |
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| Supported Client Operating Systems |
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| Access Rights Management |
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| Supported Browsers |
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| Domain Authentication |
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| Supported Languages |
| Chinese (traditional and simplified), Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese (Brazil), Romanian, Russian, Spanish, Swedish, Thai, and Turkish |
| myQNAPcloud |
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| Supported File Systems |
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| Qsync |
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| Networking |
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| Resource Monitor |
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| Network & Virtual Switch |
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| Helpdesk |
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| Security |
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| Web Administration |
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| Storage Management |
-The cache size depends on the total memory. -Bad block scan and hard drive S.M.A.R.T. -Bad block recovery and RAID recovery -Bitmap support |
{2jtab:All-in-one Server}
Powerful All-in-one server
| File Server |
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| iSCSI (IP SAN) |
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| FTP Server |
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| Surveillance Station |
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| File Station |
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| QVPN Service |
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| Qfiling |
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| DLNA Server |
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| Transcode Management |
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| Q’center (NAS CMS) |
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| Hybrid Backup Sync |
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| OceanKTV |
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| Cloud Drive Sync |
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| Qfinder Pro |
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| Cloud Backup Station |
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| App Center |
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| Print Server |
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| AirPlay & Chromecast |
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| Photo Station |
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| Download Station |
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| Music Station |
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| Notes Station 3 |
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| iTunes Server |
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| HD (HybridDesk) Station 3.13 |
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| Video Station |
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| Linux Station |
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| Virtualization Station |
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| Qcontactz |
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| Container Station |
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| IFTTT Agent |
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| Qsirch |
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| General Notes |
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{/2jtabs}
QNAP TS-251+ (Plus Series) Datasheet (5,46 MB)
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