Scan code: LN121808 Manufacturer code: TS-251D-2G/8TB-N300

QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit

2 Bay QNAP TS-251D-2G Desktop NAS Unit w/ 8TB (2 x 4TB Toshiba N300), 2GB DDR4, GbE, HDMI, 3x USB 2.0, 2x USB 3.2 Gen2

Thumbnail 1 : QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit Thumbnail 2 : QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit Thumbnail 3 : QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit Thumbnail 4 : QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit
Scan code: LN121808 Manufacturer code: TS-251D-2G/8TB-N300
Delivery Options
  • By DPD to your specified address. | £11.50 Receive SMS with one-hour delivery window Weekend, timed and European delivery options are available at checkout

    Have your parcel delivered by DPD to your specified address. Receive SMS with one-hour delivery window

    Weekend, timed and European delivery options are available at checkout
  • Collect instore Collect from our Bolton store, BL6 6PE | Free

    Order online, collect from our Bolton store (25-28 Enterprise Park, Middlebrook, Horwich, Bolton, BL6 6PE)

  • SCANPROTECT Protect against installation damage for 28 days. More info

    ScanProtect is an enhanced warranty specifically designed and offered by Scan to reduce the risk of any mishap or damage to components during installation.

    Our aim with ScanProtect is to encourage our customers to upgrade or build their own PC confidently. For a small additional fee our customers are provided with complete peace of mind.

Intel Dual-Core QNAP NAS Unit 2 Bay includes 2x 4TB Toshiba N300 Drives

QNAP 2 Bay TS-251D-2G 8TB

with a PCIe Slot for Extending NAS Functionality The TS-251D integrates secure data storage and multimedia entertainment into one device. Featuring a PCIe slot, the TS-251D allows you to flexibly extend NAS functionality and potential applications. You can enhance overall system performance by installing a QNAP QM2 card for M.2 SSD caching/10GbE connectivity combined with Qtier auto-tiering storage and installing a 10GbE/5GbE/2.5GbE network expansion card. In addition, TS-251D can be used with QNAP’s smart AI photo management application, QuMagie, which integrates AI image recognition to group similar photos together in album “People”, “Things” and “Places”. The TS-251D features an HDMI slot to stream multimedia throughout your home. The TS-251D supports dual-channel hardware decoding and transcoding, allowing you to view NAS media files smoothly across various devices. Featuring advanced Intel® UHD Graphics, the TS-251D supports dual-channel 4K hardware decoding and real-time transcoding, allowing you to convert videos to universal file formats that can be smoothly played across various devices.

Intel CeleronDual-Core Processor

1 x 2GB DDR4RAM Memory / Max. 8GB (2x4GB)

1 x PCIe 2.0 x4Expansion Slots

2 x 4TB Toshiba N300Edition of Drives Included / HDD (3.5" SATA3 6Gb/s)

Intel Celeron J4005 Dual-Core Processor


AES-NI Hardware Encryption Powered by Intel® Celeron® J4005 dual-core 2.0 GHz processor (burst up to 2.7 GHz), DDR4 RAM (up to 8 GB), one Gigabit LAN port, and supports SATA 6Gb/s hard drives, the TS-251D combines network expansion cards to create dependable read/write performance. The TS-251D features Intel® AES-NI 256 hardware-accelerated encryption for both full NAS volumes and shared folders, boosting system performance while securing sensitive data stored in the TS-251D.

A Lifetime of Photo Collections with AI Object Classification


Various Ways to Enjoy Your Multimedia QNAP provides a wide range of multimedia applications for you to easily enjoy photos, music, and videos. QuMagie Core AI image recognition technology is built for facial recognition, subject identification, and geotagging photos. Similar photos are categorized into People, Places, and Things albums. Moreover, QuMagie features a built-in timeline scroll, customizable folder covers, iOS® Live Photo display and a powerful search tool, to provide you with the ultimate photo management and image sharing solution.

Flexible and Economical Storage Expansion

Multiply Your Productivity QNAP provides an easy and flexible solution for increasing storage capacity before you run out of storage space. Here are the following ways you can expand NAS storage for accommodating data and business growth:


Extend NAS with the PCIe SlotThe PCIe port supports the installation of a 10GbE/5GbE/2.5GbE/ network expansion card, a QM2 card, a USB 3.2 Gen 2 (10Gbps) card, or a wireless network card.

Real-Time 4K Video TranscodingProvide 4K media playback and online transcoding, while enabling cross-device multimedia viewing via HDMI output or streaming applications.

Data Protection with SnapshotsSnapshots fully record the system status and data. If files are accidentally deleted or modified, you can quickly restore previously-recorded data.

Manage your ContentQNAP provides a wide range of multimedia applications. You can manage all apps through the Multimedia Console to simplify management.

Remote content storageHBS backs up and synchronizes NAS data to other remote servers or cloud storage, while QuDedup deduplicates data at the source to reduce network bandwidth and storage space.

More storage the betterUse VJBOD (Virtual JBOD) to expand your storage capacity by using the unused storage of other QNAP NAS. Connect up to two TR series USB storage enclosure.

Stream and Manage your Files, Media & Content


Multi-Point File Backup, Access, and Sync You can easily upload files from your computer, drag and drop files between folders, rename files, delete files, and configure file and folder permissions to prevent unauthorized access. Moreover, you can open and modify Microsoft Office documents stored on the TS-251D, without having to download Word documents, Excel worksheets, and PowerPoint presentations from your NAS to the PC. You can use File Station to enhance data security effectively by encrypting files into a .qenc file, set a password, and then have file recipients use QENC Decrypter to decrypt the sent file.

Edition TS-251D-2G
NAS Form Factor Desktop
Bays 2 Bay
Total Storage Included 8000 GB
Type of Drives Included HDD (3.5" SATA3 6Gb/s)
Edition of Drives Included 2 x 4TB Toshiba N300
Capacity of Drives Included  
Max. Storage Capacity  
Drive Interface Support 2 x SATA III - 6Gb/s
Drive Form Factor Support 2 x 2.5"/3.5"
Internal Flash Memory Yes
Internal Flash Memory Capacity 4GB
DOM Module No
DOM Capacity  
CPU Type Intel Celeron
CPU Model J4005
CPU Cores Dual Core
CPU Speed 2.0 GHz
RAM Memory Included 2GB (1x2GB)
RAM Memory Type DDR4 SO-DIMM
Max. RAM Memory Supported 8GB (2x4GB)
Cache Drive Interface  
Included Cache Drive Capacity  
Included Cache Drive Type  
LAN Type 10/100/1000
Expansion Slots 1 x PCIe 2.0 x4
External Connectivity
  • 1 x HDMI 2.0
  • 1 x RJ45
  • 3 x USB 2.0
  • 2 x USB 3.2 Gen 1
Cooling Fan
Noise Level 16.7 dB(A)
PSU Type External
PSU Wattage 65 W
Max. Power Consumption 15.25 W
Physical Security Kensington Lock Slot
Dimensions 105 x 168 x 226 (WxHxD mm)
Weight 1.48 Without Drives kg
Additional Information
Scan Code LN121808
Model Number TS-251D-2G/8TB-N300
GTIN 5051868150128

Please note your statutory rights are not affected.

For further information regarding Scan's warranty procedure please see our terms and conditions

24 months
Return to base
DOA Period:
14 days
RTB Period:
24 months
Manufacturer Contact Details
0871 472 4747
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TekSpek Guides
Date Issued: 14th Jun 2008

This TekSpek covers DAS and NAS, what they mean, what they’re used for and how they’re different. We’ll start by looking at the technology, then move on to the players in the market and how the market is moving forward.

Read More

QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit
QNAP 2 Bay TS-251D-2G 8TB (2 x 4TB Toshiba N300) Desktop NAS Unit