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QNAP NAS TS-251C – Celeron 2.41 GHz Dual Core, 1GB RAM, 2-Bay


QNAP NAS TS-251C – Celeron 2.41 GHz Dual Core, 1GB RAM, 2-Bay


The TS-251C is a high-performance storage solution with incredible affordability for home/SOHO users, that provides the power of a Celeron®-based system with the price of an Atom™ system.

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The TS-251C is a high-performance storage solution with incredible affordability for home/SOHO users, that provides the power of a Celeron®-based system with the price of an Atom™ system. Powered by the advanced QTS operating system, the TS-251C performs as an easy-to-use yet powerful NAS for data backup, file synchronization, remote access, home entertainment, and is ideal for users to build a personal cloud to access their data easily.

  • Transcode Full HD videos on-the-fly or offline
  • Create a personal cloud and stream your multimedia library via DLNA, AirPlay, Chromecast and Plex
  • Collect, enjoy, and share your photos, music, and videos
  • Centralize your file storage, sharing and backup
  • Access, synchronize, and manage files between computers, tablets, and mobile devices
  • Play 1080p videos with 7.1 channel surround sound pass-through via HDMI output

icon rekomendasi harddisk QNAP
Check Kompatibilitas HDD 3,5 inch
Harddisk 2,5 inch
Harddisk SSD


Value without sacrificing performance

Powered by a 64-bit dual-core Intel® Celeron® 2.41GHz processor with 1GB energy-efficient DDR3L RAM, the TS-251C is a powerful home NAS with supreme value and great performance to deliver up to 112 MB/s read & write speeds. The TS-251C can also automatically increase the processor’s clock rate from 2.41 GHz to 2.58 GHz when needed for CPU-intensive tasks. The TS-251C’s fast encryption and decryption performance provides transfer speeds of up to 112 MB/s with AES-256bit volume encryption, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251C.

TS-251C_AES TS-251C_Throughput

*Tested in QNAP lab. Figures could vary by environments.

Test Environment: NAS: OS: QTS 4.1.2 build 20150112 Volume type: RAID 0 (1TB HDDx2, Seagate ST1000NM0033 SMB Version: 2.1

Client PCs: Intel (R) Core(TM) i7-4770 3.4GHz, DDR3 16GB, WD 1TB WD10EZEX-21M2NA0, Windows 7 Professional 64bit SP1, Windows upload/download with 5GB file. 

QTS – Simple and efficient

Thanks to the intuitive user interface of QTS, system operations of the TS-251C are smooth and handy. Its 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 operating efficiency.


Easily build your personal cloud and access anywhere

QNAP’s myQNAPcloud provides an always-connected infrastructure for business and home users to easily build a private/personal cloud. Through any web browser or the free mobile app the TS-251C 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 TS-251C wherever you are. Instantly stream or share your multimedia contents and share them with your friends.

Gbr NAS 3

Real-time & offline HD video transcoding

The TS-251C, with built-in hardware graphics acceleration, delivers superior 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 multiple devices to simultaneously view different videos stored on the TS-251C with on-the-fly hardware accelerated transcoding. The TS-251C allows you to enjoy instant videos on multiple devices – even those that lack computing power or have limited file format support – without the need for complicated and time-consuming file conversion.

With the benefit of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos by selecting a pre-rendered lower resolution to play the videos via File Station, Video Station, or the Qfile app for iOS & Android without affecting the TS-251C’s performance running other applications. The TS-251C also allows you to set a dedicated folder for automatic video transcoding.


Stream media via DLNA, AirPlay, Chromecast and Plex

You can use DLNA-compatible devices such as HDTVs, Smart TVs, Sony® PS3, 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-251C. You can also use the Qfile app on an iOS device to browse videos and photos stored on the TS-251C and play on a TV via Apple TV. By installing the QAirplay & Chromecast app, available from the QTS App Center, you can stream your media content directly to a TV via Apple TV or Chromecast. The TS-251C’s support for Plex Media Server organizes all of your media with rich information and transforms the TS-251C into a powerful & easy to use streaming machine with DLNA, Roku, Amazon Fire TV, and Google TV support.


Well-rounded 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 effortlessly back up data to the TS-251C. The USB 3.0 port on the front panel of the TS-251C features a one-touch-copy function for you to instantly back up data on external drives to the TS-251C with just one click, or alternatively to back up data from the TS-251C to external drives. A wide range of third-party backup software such as Acronis® True Image and Symantec® Backup Exec are also supported.

Gbr NAS 9

Disaster recovery solutions bring peace of mind

The TS-251C offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time and scheduled data backup to remote Turbo NAS or FTP servers and synchronizes files to remote folders from local folders with better backup efficiency and reduced backup time. The TS-251C 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®, Symform®, Dropbox® and Google® Drive.


Archive your photo memories. Share your life.

The TS-251C 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 TS-251C 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, with the Qfile mobile app in your iOS® or Android™ devices you can instantly upload photos to the TS-251C.

Gbr NAS 5

Comprehensive surveillance solution providing 24/7 security

Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 2,700 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 with multiple cameras. You can also install the Vmobile app on your iOS® or Android™ devices to manage the monitored channels anytime and anywhere to safeguard your monitored environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251C.

Gbr NAS 7

Install-on-demand apps to extend NAS functionality

The TS-251C 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 & updating installed apps. In addition, QNAP’s development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-251C.

Gbr NAS 8


The TS-251C 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 hard disk standby mode, scheduled power on/off, and Wake on LAN.


Spesifikasi Hardware

CPU Intel® Celeron® 2.41GHz dual-core processor (burst up to 2.58GHz)
DRAM 1GB DDR3L RAM (non-upgradeable)
Flash Memory 512MB DOM
Hard Disk Drive 2 x 3.5” SATA hard drive NOTE: 1. The system is shipped without HDD. 2. For the HDD compatibility list, please visit
LAN Port 1 x Gigabit RJ-45 Ethernet port
LED Indicators Power, Status, LAN, USB, HDD 1-2
USB 1 x USB 3.0 port (Front: 1) 2 x USB 2.0 port (Rear: 2) Support USB printer, pen drive, and USB UPS etc.
HDMI 1 (v1.4a, 1080p)
Buttons Power/Status, Reset, USB One-Touch-Backup
Alarm Buzzer System Warning
IR Receiver Supports QNAP RM-IR002 remote control or MCE-compatible remote controls
Form Factor Tower
Dimensions 166.5 (H)x 85.0(W) x 218.4(D) mm 6.65(H) x 3.35(W) x 8.6(D) inch
Weight Net: 0.94 kg (2.07 lbs) Gross: 3.16 kg (6.97 lbs)
Power Consumption (W) HDD standby: 7.38W S3 sleep: 0.7W In operation: 15.71W (with 2x 2TB HDD installed)
Temprature 0-40ËšC
Humidity 5~95% RH non-condensing, wet bulb: 27ËšC
Power Supply External Power Adapter, 60W, 100-240V
Secure Design Kensington security slot for theft prevention
Fan 1 x quiet cooling fan (6 cm, 12V DC)


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