TS-251D-4G 2Bay 2.0GHz 4GB DDR4 1x GBE 2x USB3.0 3x USB2.0
ITCurry #: N2229442 | Article #: TS-251D-4G-
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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,
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 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.
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 | 3.5" |
| Number of M.2 (M & B) slots | 1 |
| RAID support | Yes |
| RAID levels | 0, 1, JBOD |
| Online RAID migration | Yes |
| Online RAID expansion | Yes |
| RAID rebuild | Yes |
| Hot-swap drive bays | Yes |
| Supported file systems | FAT32, HFS+, NTFS, ext3, ext4 |
| Storage drives installed | No |
| Number of storage drives supported | 2 |
| Installed storage drive type | No |
| Supported storage drive types | HDD & SSD |
| Auto-rebuild | Yes |
| Bad block scan | Yes |
| Disk roaming | Yes |
| Processor | |
| Processor manufacturer | Intel |
| Processor family | Intel© Celeron© |
| Processor model | J4005 |
| Processor frequency | 2 GHz |
| Processor boost frequency | 2.7 GHz |
| Processor cores | 2 |
| Processor threads | 2 |
| Processor cache | 4 MB |
| CPU configuration (max) | 1 |
| PCI Express configurations | 1x2, 1x2+2x1, 1x4, 2x1, 4x1 |
| PCI Express slots version | 2.0 |
| Processor codename | Gemini Lake |
| Processor lithography | 14 nm |
| Processor operating modes | 64-bit |
| Processor package size | 25 x 24 mm |
| Processor socket | BGA 1090 |
| Tjunction | 105 øC |
| Thermal Design Power (TDP) | 10 W |
| On-board graphics card model | Intel© UHD Graphics 600 |
| Maximum internal memory supported by processor | 8 GB |
| Conflict-Free processor | Yes |
| Memory | |
| Internal memory type | DDR4 |
| Maximum RAM supported | 8 GB |
| Memory slots | 2 |
| Internal memory | 4 GB |
| Memory form factor | SO-DIMM |
| Flash memory | 4000 MB |
| Network | |
| Ethernet LAN | Yes |
| Ethernet LAN data rates | 1000 Mbit/s |
| Wi-Fi | No |
| DHCP client | Yes |
| DHCP server | Yes |
| Jumbo frames support | Yes |
| iSCSI support | Yes |
| Wake-on-LAN ready | Yes |
| Supported network protocols | TCP/IP, PTP, L2TP/IPSec, OpenVPN, QBelt(, FTP, SFTP, TFTP |
| Link aggregation | Yes |
| WLAN adapter supported | Yes |
| Ports & interfaces | |
| USB port | Yes |
| USB 2.0 ports quantity | 3 |
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| HDMI ports quantity | 1 |
| HDMI version | 2.0 |
| Ethernet LAN (RJ-45) ports | 1 |
| Graphics | |
| On-board graphics card base frequency | 250 MHz |
| On-board graphics card burst frequency | 700 MHz |
| On-board graphics card dynamic frequency (max) | 700 MHz |
| On-board graphics card DirectX version | 12.0 |
| On-board graphics card ID | 0x3185 |
| Maximum on-board graphics card memory | 8 GB |
| Number of displays supported (on-board graphics) | 3 |
| Design | |
| Chassis type | Tower |
| Cooling type | Active |
| Product colour | White |
| Number of fans | 1 fan(s) |
| Fan diameter | 7 cm |
| LED indicators | HDD, LAN, Power, Status, USB |
| Cable lock slot | Yes |
| Cable lock slot type | Kensington |
| Performance | |
| Type | NAS |
| Device class | Home & Home Office |
| Backup function | Yes |
| Backup features | Cloud, USB drive |
| Buzzer | Yes |
| Multilingual support | Yes |
| Noise level | 16.7 dB |
| Third-party support | Yes |
| Snapshot | Yes |
| Web-based management | Yes |
| Security algorithms | 256-bit AES, FIPS 140-2, SNMPv3, SSH, SSL/TLS |
| Access Control List (ACL) | Yes |
| Reset button | Yes |
| On/off switch | Yes |
| Built-in FTP server | Yes |
| Browser supported | Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox |
| System log | Yes |
| Hot spare | Yes |
| Password authentication | Yes |
| Disk scan | Yes |
| S.M.A.R.T. support | Yes |
| Share folder | CIFS/SMB, FTP, WebDAV |
| Universal Plug and Play (UPnP) | Yes |
| USB copy function | Yes |
| Software | |
| Operating system installed | QNAP QTS |
| Operating system version | 5.0.0 |
| Windows operating systems supported | Windows 10, Windows 7, Windows 8 |
| Linux operating systems supported | Yes |
| Mac operating systems supported | 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 | External |
| Power supply unit (PSU) capacity | 65 W |
| Number of power supply units | 1 |
| Power consumption (typical) | 15.25 W |
| Power consumption (sleep) | 8.08 W |
| AC input voltage | 100 - 240 V |
| AC input frequency | 50 - 60 Hz |
| Fan voltage | 12 V |
| Weight & dimensions | |
| Width | 105 mm |
| Depth | 226 mm |
| Height | 168 mm |
| Weight | 1.48 kg |
| Package weight | 2.58 kg |
| Processor special features | |
| Embedded options available | No |
| Enhanced Intel SpeedStep Technology | Yes |
| Execute Disable Bit | Yes |
| Idle States | Yes |
| Intel 64 | Yes |
| Intel Enhanced Halt State | Yes |
| Intel Identity Protection Technology version | 1.00 |
| Intel Secure Key Technology version | 1.00 |
| Intel Smart Response Technology version | 0.00 |
| Intel Virtualization Technology (VT-x) | Yes |
| Intel Virtualization Technology for Directed I/O (VT-d) | Yes |
| Intel VT-x with Extended Page Tables (EPT) | Yes |
| Intel© AES New Instructions (Intel© AES-NI) | Yes |
| Intel© Anti-Theft Technology (Intel© AT) | No |
| Intel© Hyper Threading Technology (Intel© HT Technology) | No |
| Intel© Identity Protection Technology (Intel© IPT) | Yes |
| Intel© OS Guard | Yes |
| Intel© Quick Sync Video Technology | Yes |
| Intel© Secure Key | Yes |
| Intel© Smart Response Technology | No |
| Intel© Turbo Boost Technology | No |
| Maximum number of PCI Express lanes | 6 |
| Number of execution units | 12 |
| Thermal Monitoring Technologies | Yes |
| UART | Yes |
| Memory types supported by processor | DDR4-SDRAM, LPDDR4-SDRAM |
| Packaging content | |
| External power adapter | Yes |
| Cables included | AC, LAN (RJ-45) |
| Quick installation guide | Yes |
| Number of screws | 14 |
| Warranty | |
| Base Warranty | Non Non |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 øC |
| Operating relative humidity (H-H) | 5 - 95% |
| Storage temperature (T-T) | -20 - 70 øC |
| Logistics data | |
| Harmonized System (HS) code | 84714100 |
| Other features | |
| Processor ARK ID | 128992 |