QNAP TS-251D-4G-US 2BAY NAS INTEL CELERON APOLLO CELERON J4005 2.0GHZ DUAL CORE UP

Intel Dual-Core Multimedia NAS 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.

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

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

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

HBS 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.

Use 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.

Intel® Celeron® J4025 Dual-Core Processor and AES-NI Hardware Encryption

Powered by Intel® Celeron® J4025 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® (via Qmedia), 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.

Multiple Ways To Enjoy Your Multimedia

QNAP provides a wide range of multimedia applications for you to easily enjoy photos, music, and videos.

Specifications

• Mfr Part Number: TS-251D-4G-US
• Hardware:
  • CPU: Intel Celeron J4005 dual-core 2.0 GHz processor (burst up to 2.7 GHz)
  • Encryption Acceleration
  • System Memory: 4 GB SO-DIMM DDR4 (1 x 4 GB)
  • Maximum Memory: 8GB (2x 4GB)
  • Memory Slot: 2 x SO-DIMM DDR4
  • Flash Memory: 4GB (Dual boot OS protection)
  • Drive Bay: 2 x 3.5-inch SATA 6Gb/s, 3Gb/s
  • Gigabit Ethernet Port (RJ45): 1
  • 5 Gigabit Ethernet Port (5G/2.5G/1G/100M): Expandable with an optional PCIe adapter
  • 10 Gigabit Ethernet Port: Expandable with an optional PCIe adapter
  • USB Port: 3x USB 2.0 Ports, 2x  USB 3.2 Gen 1 port
  • PCIe Slot: Slot 1: PCIe Gen 2 x4
  • LED Indicator: Status/Power, LAN, USB, HDD 1-2
  • Button: Power, Reset, USB copy
  • System Warning: Buzzer
  • Operating System: QTS 4.4.1 (embedded Linux)
• Network & Virtual Switch:
  • TCP/IP: Dual stack (IPv4 and IPv6)
  • Jumbo frame
  • Port trunking（Link aggregation）
    • failover
    • Load balancing
  • DHCP server and client
  • RADVD
  • USB Wi-Fi adapter Note: This feature does not support ad hoc networks because of security considerations.
  • Virtual switch
    • Network Address Translation (NAT)
    • Spanning Tree Protocol (STP)
    • Thunderbolt to Ethernet converter (T2E)
    • Software-Defined Switch mode
  • Static Route
  • NCSI (Network Connectivity Status Indicator)
  • DDNS settings (Customize & Multiple Service)
• Security:
  • Network access protection with auto-blocking - SSH, Telnet, HTTP(S), FTP, CIFS/SMB, AFP
  • Host access control for shared folders (CIFS/SMB)
  • AES 256-bit folder-based and volume-based encryptions which are validated by FIPS 140-2 CAVP (Cryptographic Algorithm Validation Program)
  • 256-bit external drive encryption
  • Importable SSL certiï¬?cates
  • Instant alert via E-mail, SMS, beep, and push service
  • 2-step veriï¬?cation
• Storage Management:
  • Supported RAID types: RAID 0, 1, JBOD, Single
  • RAID Hot Spare and Global Hot Spare
  • RAID Rebuild Speed Customization
  • Online RAID capacity expansion
  • Online RAID level migration
  • SSD RAID Over-provisioning Note: RAID 0 and JBOD Data RAID does not support Over-provisioning.
  • SSD RAID Performance evaluation (with SSD Profiling Tool)
  • SSD TRIM for RAID 0,1
  • Bitmap support
  • Disk auto S.M.A.R.T. data migration
  • Disk bad block scan and S.M.A.R.T test.
  • Disk bad block recovery
  • Disk secure data erase
  • Ironwolf Health Management
  • Storage pools
  • Qtier Data Tiering Technology
    • Automatic or scheduled data tiering
    • IO-aware auto tiering
    • Shared folder tiering on demand
  • Flexible volumes and LUNs with thin provisioning and space reclaiming
    • If the NAS has less than 4GB RAM, then the maximum volume capacity is 144TB.
    • If the NAS has at least 4GB RAM, then the maximum volume capacity is 250TB.
  • Online volume expansion
  • Volume type conversion
  • Volume shrink
  • Storage space utilization
  • Snapshots
    • Volume and LUN snapshots
    • Snapshot Dashboard
    • Snapshot Manager
    • Snapshot local restore and revert
    • Snapshot Clone
    • Snapshot Replica and Snapshot Vault
    • Snapshot remote restore and revert
    • Unified Snapshot Directory
    • Support for Windows Previous Versions (CIFS/SMB)
    • Snapshot Agent for Microsoft Windows and VMware vSphere
  • Storage expansion using QNAP expansion units J
  • BOD enclosure roaming
  • SSD read-only and read-write cache
  • SSD write-only cache
• File System:
  • Internal HDD: EXT4
  • External HDD: EXT3, EXT4, NTFS, FAT32, HFS+, exFAT
• Form Factor: Tower
• Security Slot: Kensington security slot
• Fan: 1 x 70mm
• Power Supply Unit: External Power Adapter, 65W, 100-240V
• Dimensions (WxDxH): 4.13 x 8.90 x 6.61 inch
• Weight: 3.26 lbs