Shipping Information
- Available for shipping
- Usually leaves our partner warehouse in 2-4 business days
Store Availability
- 3-5 business days at Bankstown Store
- 3-5 business days at Castle Hill Store
- 2-4 business days at Northmead Store
Shipping Estimate
QNAP TS-251D, NAS, Tower, Intel Celeron, J4005, White
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.
Intel Celeron J4005 Dual-Core Processor and 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 8GB), 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.
Smart AI Photo Management
QuMagie integrates QuMagie Core AI image recognition technology 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.
Real-Time 4K Video Transcoding
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*. You can also watch high-quality 4K media files on an HDTV using the HDMI output or with Plex Media Server to stream media files to mobile devices and media streaming devices (including DLNA, Roku, Apple TV, Amazon Fire TV and Chromecast ). The QNAP RM-IR004 remote control (sold separately) can be configured using QButton to customize individual button actions, providing a more user-friendly NAS experience.
*The TS-251D's hardware provides hardware decoding, encoding, and transcoding capabilities. However, playback quality may vary due to playback software, file formats, system usage, and available bandwidth.
Multiple Ways To Enjoy Your Multimedia
QNAP provides a wide range of multimedia applications for you to easily enjoy photos, music, and videos.
Easy and Secure File Management
File Station centralizes files stored on your TS-251D and in the cloud. 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, with Microsoft Office Online 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. When it comes to sharing sensitive or confidential files on the TS-251D, 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.
Multi-Point File Backup, Access, and Sync
The TS-251D stores data and files centrally, and supports file sharing protocols, including SMB/CIFS, AFP and NFS for Windows, Mac, and Linux /UNIx devices. Coupled with Qsync (a utility that transforms a QNAP NAS into a secure, high-capacity data center for file synchronization) any file uploaded to the TS-251D becomes available for all linked devices, such as computers, laptops, and mobile devices. Hybrid Backup Sync helps you easily backup or synchronize data on the TS-251D to another QNAP NAS, remote servers, or cloud storage for disaster recovery. Additionally, QuDedup technology greatly improves the efficiency of multi-version backup to the destination storage, while optimizing storage utilization. You can install the QuDedup Extract Tool on your computer and restore deduplicated files to their normal status.
Protect Important Data With Snapshots
Snapshots help protect your data by fully recording the NAS system state and metadata. You can use snapshots to quickly restore files to a previously-recorded state when files are accidentally deleted or modified, or when the system is compromised by ransomware. QNAP snapshots are block-based and only record modified data. Not only does this save storage space, but also reduces the time required to back up and restore data.
Extend NAS Functionality With The PCIe Slot
With a PCIe expansion Gen 2.0 x 4 slot, the TS-251D provides flexibility in extending NAS functionality and potential applications. To optimize system performance, install a QNAP QM2 card for M.2 SSD caching/10GbE connectivity and use with Qtier tiered storage for optimal system performance. You can also use the TS-251D as a wireless access point by installing a compatible QNAP QWA-AC2600 wireless network card to create a wireless media streaming environment. Moreover, by configuring the QxG-10GbE/5GbE network expansion cards, you can upgrade your network to high-speed connectivity with an existing CAT 5e cable. Alternatively, you can add an affordable QNAP QNA-UC5G1T USB 3.0 to 5GbE adapter to your TS-251D and laptop to enjoy higher network speeds, or boost the USB connectivity of the TS-251D by installing a USB 3.1 Gen 2 (10Gbps) card.
QVR Pro Safeguards Your Environment
QNAP's QVR Pro surveillance solution allows you to arrange dedicated, independent storage space for surveillance data on the TS-251D and leverages scalable storage advantages. With QVR Pro, camera management, storage space allocation, camera live view, and playback is greatly simplified. You can also use USB webcams as network cameras with the QUSBCam2 app, and remotely monitor surveillance feeds anytime with QVR Pro Client mobile app.
Multiply Your Productivity
The app-driven QTS operating system provides solutions for simplifying file backup, management, search, and more.
Flexible and Economical Storage Expansion
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:
Upgrade RAID Capacity
Hot-swap lower-capacity drives with larger-capacity drives for your QNAP NAS to grow with your business.
VJBOD
Use Virtual JBOD (VJBOD) to expand storage capacity by using unused storage in other QNAP NAS. Up to 8 QNAP NAS can be mounted as local disks on the TS-251D.
Attach Expansion Enclosures
Easily expand NAS capacity by connecting two TR-002, TR-004 USB hardware RAID external enclosures or TL-D800C USB JBOD enclosures with QNAP's Storage & Snapshots Manager application.
Intel Celeron J4005 Dual-Core Processor and 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 8GB), 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.
Smart AI Photo Management
QuMagie integrates QuMagie Core AI image recognition technology 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.
Real-Time 4K Video Transcoding
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*. You can also watch high-quality 4K media files on an HDTV using the HDMI output or with Plex Media Server to stream media files to mobile devices and media streaming devices (including DLNA, Roku, Apple TV, Amazon Fire TV and Chromecast ). The QNAP RM-IR004 remote control (sold separately) can be configured using QButton to customize individual button actions, providing a more user-friendly NAS experience.
*The TS-251D's hardware provides hardware decoding, encoding, and transcoding capabilities. However, playback quality may vary due to playback software, file formats, system usage, and available bandwidth.
Multiple Ways To Enjoy Your Multimedia
QNAP provides a wide range of multimedia applications for you to easily enjoy photos, music, and videos.
Easy and Secure File Management
File Station centralizes files stored on your TS-251D and in the cloud. 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, with Microsoft Office Online 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. When it comes to sharing sensitive or confidential files on the TS-251D, 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.
Multi-Point File Backup, Access, and Sync
The TS-251D stores data and files centrally, and supports file sharing protocols, including SMB/CIFS, AFP and NFS for Windows, Mac, and Linux /UNIx devices. Coupled with Qsync (a utility that transforms a QNAP NAS into a secure, high-capacity data center for file synchronization) any file uploaded to the TS-251D becomes available for all linked devices, such as computers, laptops, and mobile devices. Hybrid Backup Sync helps you easily backup or synchronize data on the TS-251D to another QNAP NAS, remote servers, or cloud storage for disaster recovery. Additionally, QuDedup technology greatly improves the efficiency of multi-version backup to the destination storage, while optimizing storage utilization. You can install the QuDedup Extract Tool on your computer and restore deduplicated files to their normal status.
Protect Important Data With Snapshots
Snapshots help protect your data by fully recording the NAS system state and metadata. You can use snapshots to quickly restore files to a previously-recorded state when files are accidentally deleted or modified, or when the system is compromised by ransomware. QNAP snapshots are block-based and only record modified data. Not only does this save storage space, but also reduces the time required to back up and restore data.
Extend NAS Functionality With The PCIe Slot
With a PCIe expansion Gen 2.0 x 4 slot, the TS-251D provides flexibility in extending NAS functionality and potential applications. To optimize system performance, install a QNAP QM2 card for M.2 SSD caching/10GbE connectivity and use with Qtier tiered storage for optimal system performance. You can also use the TS-251D as a wireless access point by installing a compatible QNAP QWA-AC2600 wireless network card to create a wireless media streaming environment. Moreover, by configuring the QxG-10GbE/5GbE network expansion cards, you can upgrade your network to high-speed connectivity with an existing CAT 5e cable. Alternatively, you can add an affordable QNAP QNA-UC5G1T USB 3.0 to 5GbE adapter to your TS-251D and laptop to enjoy higher network speeds, or boost the USB connectivity of the TS-251D by installing a USB 3.1 Gen 2 (10Gbps) card.
QVR Pro Safeguards Your Environment
QNAP's QVR Pro surveillance solution allows you to arrange dedicated, independent storage space for surveillance data on the TS-251D and leverages scalable storage advantages. With QVR Pro, camera management, storage space allocation, camera live view, and playback is greatly simplified. You can also use USB webcams as network cameras with the QUSBCam2 app, and remotely monitor surveillance feeds anytime with QVR Pro Client mobile app.
Multiply Your Productivity
The app-driven QTS operating system provides solutions for simplifying file backup, management, search, and more.
Flexible and Economical Storage Expansion
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:
Upgrade RAID Capacity
Hot-swap lower-capacity drives with larger-capacity drives for your QNAP NAS to grow with your business.
VJBOD
Use Virtual JBOD (VJBOD) to expand storage capacity by using unused storage in other QNAP NAS. Up to 8 QNAP NAS can be mounted as local disks on the TS-251D.
Attach Expansion Enclosures
Easily expand NAS capacity by connecting two TR-002, TR-004 USB hardware RAID external enclosures or TL-D800C USB JBOD enclosures with QNAP's Storage & Snapshots Manager application.
| Storage | |
| Supported storage drive interfaces | Serial ATA II,Serial ATA III |
| Storage drive sizes supported The sizes of storage drives that can be used with the product. | 3.5" |
| Number of M.2 (M & B) slots | 1 |
| RAID support The device uses RAID, which is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement. Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the specific level of redundancy and performance required. |
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| RAID levels RAID is a storage technology that combines multiple disk drive components into a logical unit for the purposes of data redundancy and performance improvement. Data is distributed across the drives in one of several ways, referred to as RAID levels, depending on the specific level of redundancy and performance required. | 0,1,JBOD |
| Online RAID migration |
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| Online RAID expansion |
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| RAID rebuild |
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| Hot-swap drive bays The places where drives (hot-swap drives) can be inserted to or removed from the computer. |
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| Supported file systems | FAT32,HFS+,NTFS,ext3,ext4 |
| Storage drives installed Storage drives are built into the system. |
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| Installed storage drive type Type of storage drives built into the device e.g. HDD (hard disk drive), SSD (solid-state drive). |
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| Supported storage drive types The type of storage drives the device is compatible with. | HDD & SSD |
| Number of storage drives supported How many storage drives can be fit into the product at once. | 2 |
| Processor | |
| Processor family A family of processors is a group of processors produced by one company over a short period of time e.g. Intel Pentium processors. | Intel® Celeron® |
| Processor model The model number for the processor in a computer. | J4005 |
| Processor frequency The speed that the microprocessor executes each instruction or each vibration of the clock. The CPU requires a fixed number of clock ticks, or cycles, to execute each instruction. The faster the clocks rate, the faster the CPU, or the faster it can execute instructions. Clock Speeds are usually determined in MHz, 1 MHz representing 1 million cycles per second, or in GHz, 1 GHz representing 1 thousand million cycles per second. The higher the CPU speed, the better a computer will perform. | 2 GHz |
| Processor boost frequency The turbo boost is an automatic, managed accelleration of the processor when one of the cores is overloaded. | 2.7 GHz |
| Processor cores The number of central processing units ('cores') in a processor. Some processors have 1 core, others have 2 (e.g. Intel Core Duo) or more (e.g. the Intel Xeon E7-2850 has 10 cores). | 2 |
| Processor operating modes Operating modes for the processors that place restrictions on the type and scope of operations for certain processes run by the CPU. This design allows the operating system to run with more privileges than application software. | 64-bit |
| On-board graphics adapter model "Graphic adapter" is the hardware that produces images on a display. "On-board" means that the graphics adapter is intergrated inside the motherboard. | Intel® UHD Graphics 600 |
| Memory | |
| Internal memory type The type of internal memory such as RAM, GDDR5. | DDR4 |
| Maximum RAM supported | 8 GB |
| Memory slots Number and type of memory expansion slots, including connector and memory module descriptions. | 2 |
| Internal memory A computer's memory which is directly accessible to the CPU. | 4 GB |
| Memory form factor Design of the memory e.g. 240-pin DIMM, SO-DIMM. | SO-DIMM |
| Flash memory | 4000 MB |
| Network | |
| Ethernet LAN An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable. |
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| Ethernet LAN data rates The different speed levels of the Ethernet LAN connection. | 1000 Mbit/s |
| Wi-Fi Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves. |
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| DHCP client Whether the product features a DHCP (Dynamic Host Configuration Protocol) to obtain IP addresses within a network. |
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| DHCP server A server is a system which that responds to requests across a computer network to provide, or help to provide, a network service. DCHP servers uses the DCHP (Dynamic Host Configuration Protocol), which is a standardized networking protocol used by servers on an IP network to allocate IP addresses to computers. The purpose of DHCP is to automate the IP address configuration of a computer without a network administrator. IP addresses are typically selected from a range of assigned IP addresses stored in a database on the server and issued to a computer which requests a new IP address. An IP address is assigned to a computer for a set interval, after which, the computer must renew the IP address or acquire a new one. |
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| Jumbo frames support |
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| iSCSI support |
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| Wake-on-LAN ready |
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| Supported network protocols Network protocols tested as compatible with this product e.g. FTP,HTML, POP. | TCP/IP, PTP, L2TP/IPSec, OpenVPN, QBelt(, FTP, SFTP, TFTP |
| Link aggregation |
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| WLAN adapter supported |
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| Ports & interfaces | |
| USB port The device features a socket into which a USB cable can be plugged. |
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| USB 2.0 ports quantity Number of USB 2.0 ports (connecting interfaces) in the device. USB 2.0 was released in April 2000 (now called "Hi-Speed"), adding higher maximum signaling rate of 480 Mbit/s (effective throughput up to 35 MB/s or 280 Mbit/s), USB 2.0 ports are usually black. | 3 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| HDMI ports quantity The number of sockets (ports) for HDMI connections. HDMI (High-Definition Multimedia Interface) is a compact audio/video interface for transferring uncompressed video data and compressed/uncompressed digital audio data from a HDMI-compliant device ("the source device") to a compatible computer monitor, video projector, digital television, or digital audio device. HDMI is a digital replacement for existing analog video standards. | 1 |
| HDMI version | 2.0 |
| Ethernet LAN (RJ-45) ports Number of Ethernet LAN (RJ-45) ports (connecting interfaces) in the device. Ethernet LAN (RJ-45) ports allow a computer to connect to the ethernet. | 1 |
| Design | |
| Chassis type The type of rigid framework onto which is the hosuing for device components. | Tower |
| Cooling type The method used to cool the device or to cool the air around the device. | Active |
| Product colour The colour e.g. red, blue, green, black, white. | White |
| Number of fans The quantity of fans (apparatus with rotating blades that creates a current of air for cooling or ventilation). | 1 fan(s) |
| Fan diameter The size of the fan, measured by the distance from one side of the fan to the other, via a straight line going through the middle of the fan. | 7 cm |
| LED indicators | HDD,LAN,Power,Status,USB |
| Cable lock slot Holes on the edge of devices through which a cable lock can be passed, so the device can be locked to a desk etc. |
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| Cable lock slot type | Kensington |
| Performance | |
| Type Characteristics of the device. | NAS |
| Device class The category to which this device belongs. | Home & Home Office |
| Backup function The function if the main power source fails. |
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| Backup features | Cloud,USB drive |
| Buzzer |
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| Multilingual support |
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| Noise level The amplitude level of the undesired background noise, usually measured in decibels (db). | 16.7 dB |
| Snapshot |
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| Security algorithms Security algorithms are used to provide authentication, cipher key generation, integrity and radio link privacy to users on mobile networks. The security algorithms supported are the ones that can be used with this product. | 256-bit AES,FIPS 140-2,SNMPv3,SSH,SSL/TLS |
| Access Control List (ACL) |
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| Web-based management Using a website/web application to manage something. |
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| Reset button |
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| On/off switch The button which is pressed to switch the device on or off. |
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| Built-in FTP server |
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| Browser supported List of supported browsers for this product. | Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox |
| System log |
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| Hot spare |
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| S.M.A.R.T. support |
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| Share folder | CIFS/SMB |
| USB copy function |
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| Software | |
| Operating system installed Type of operating system on a device e.g. IOS on Apple devices, Android for mobile devices. | QNAP Turbo System |
| Operating system version The version of the operating system used e.g. 4.1, 4.2 for Android. | 4.4.1 |
| Windows operating systems supported Windows vesions wich can be used with the device. | Windows 10,Windows 7,Windows 8 |
| Linux operating systems supported 8 RT. Linux (9.4, 9.5), Red Hat Enterprise Linux 5.0 (supported with a pre-built package); SUSE Linux (10.3, 11.0, 11, 11.1, 11.2), Fedora (9, 9.0, 10, 10.0, 11.0, 11, 12, 12.0), Ubuntu (8.04, 8.04.1, 8.04.2, 8.10, 9.04, 9.10, 10.04), Debian (5.0, 5.0.1, 5.0.2, 5.0.3) |
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| Mac operating systems supported Mac operating systems e.g. OS X can be used with the device. | Mac OS X 10.10 Yosemite,Mac OS X 10.11 El Capitan,Mac OS X 10.12 Sierra,Mac OS X 10.13 High Sierra,Mac OS X 10.14 Mojave,Mac OS X 10.15 Catalina,Mac OS X 10.7 Lion,Mac OS X 10.8 Mountain Lion,Mac OS X 10.9 Mavericks |
| Server operating systems supported | Windows Server 2003,Windows Server 2008 R2,Windows Server 2012,Windows Server 2012 R2,Windows Server 2016,Windows Server 2019 |
| Power | |
| Power supply location Where the power supply is positioned. | External |
| Power supply unit (PSU) capacity | 65 W |
| Number of power supply units | 1 |
| Power consumption (typical) Amount of power consumed by this model, often expressed in watts (W). Typical values that manufacturers give are power consumption when off, standby/suspended mode, typical use, maximum usage. | 15.25 W |
| Power consumption (sleep) | 8.08 W |
| AC input voltage The voltage of the AC electricity that is inputted into the product. | 100 - 240 V |
| Weight & dimensions | |
| Width The measurement or extent of something from side to side. | 105 mm |
| Depth The distance from the front to the back of something. | 226 mm |
| Height The measurement of the product from head to foot or from base to top. | 168 mm |
| Weight Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies. | 1.48 kg |
| Package weight Weight of the packaged product. | 2.58 kg |
| Packaging content | |
| External power adapter |
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| Cables included | AC,LAN (RJ-45) |
| Quick installation guide |
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| Operational conditions | |
| Operating temperature (T-T) The minimum and maximum temperatures at which the product can be safely operated. | 0 - 40 °C |
| Operating relative humidity (H-H) | 5 - 95% |
| SKU | 378686 |
| MPN | TS-251D-4G |
| Brand | QNAP |
| Product Condition | Brand New/Unused |
| Stock Availability | Available for Shipping |
| Product Use | General |
| Warranty Period | 2 Years Warranty |
| Warranty Contact | https://www.qnap.com/ |