QNAP TS-251D-4G 2-Bay NAS Enclosure

BH #QNTS251D4GUS • MFR #TS-251D-4G-US
QNAP TS-251D-4G 2-Bay NAS Enclosure
Key Features
  • 2 x 3.5/2.5" SATA III Drive Bays
  • 2.0 GHz Intel Celeron Dual-Core CPU
  • 4GB DDR4 RAM
  • 1 x Gigabit Ethernet Port
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Securely expand your network storage capacity with the QNAP TS-251D-4G 2-Bay NAS Enclosure, which supports up to two hot-swappable 3.5" or 2.5" SATA III drives that can be set up in RAID 0, 1, JBOD, or Single configuration. Powered by an Intel Celeron dual-core processor with 4GB of DDR4 memory, this 2-bay NAS enclosure is designed to efficiently back up your data, share files, and stream 4K media to connected users with a maximum read and write speed of 982 MB/s and 892 MB/s, respectively. You can upgrade the system's RAM to up to 8GB by installing a SO-DIMM module into the available memory slot. The available PCIe 2.0 x4 slot allows you to further enhance performance with devices such as a 10Gb Ethernet adapter, a USB 3.2 Gen 2 card, a wireless networking adapter, or a QNAP QM2 card for M.2 solid-state cache drives.
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$339.00
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Installed Memory
2GB
4GB
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QNAP TS-251D Overview

  • 1Description
  • 2Network Storage
  • 3PCIe Expansion
  • 4Fully Connected
  • 54K Video Transcoding
  • 6Snapshots
  • 7QTS Operating System

Securely expand your network storage capacity with the QNAP TS-251D-4G 2-Bay NAS Enclosure, which supports up to two hot-swappable 3.5" or 2.5" SATA III drives that can be set up in RAID 0, 1, JBOD, or Single configuration. Powered by an Intel Celeron dual-core processor with 4GB of DDR4 memory, this 2-bay NAS enclosure is designed to efficiently back up your data, share files, and stream 4K media to connected users with a maximum read and write speed of 982 MB/s and 892 MB/s, respectively. You can upgrade the system's RAM to up to 8GB by installing a SO-DIMM module into the available memory slot. The available PCIe 2.0 x4 slot allows you to further enhance performance with devices such as a 10Gb Ethernet adapter, a USB 3.2 Gen 2 card, a wireless networking adapter, or a QNAP QM2 card for M.2 solid-state cache drives.

The TS-251D-4G connects to your network via Gigabit Ethernet. Three USB 2.0 ports are available for compatible peripherals alongside two USB 3.1 Gen 1 Type-A ports, which allow you to transfer data at up to 5 Gb/s with compatible devices. The HDMI 2.0 port allows you to connect displays directly to use a multimedia server. Additionally, your data is protected by AES-NI 256-bit hardware-accelerated encryption. The QNAP TS-251D-4G operates using the QTS 4.4.1 Linux-based operating system, which is accessible via web browser using Windows, Mac, and Linux computer systems.

Network Storage

The QNAP TS-251D-4G supports up to two 3.5" or 2.5" drives that can be set in RAID 0, 1, JBOD, or Single configuration. It is powered by an Intel Celeron dual-core processor with 4GB of DDR4 memory for fast and efficient file and media sharing in addition to scheduled backups with read speeds of up to 982 MB/s and 892 MB/s write speeds.

PCIe Expansion

Use the PCIe 2.0 x4 expansion slot to install devices such as a 10Gb Ethernet adapter, a USB 3.2 Gen 2 card, or a wireless networking adapter. Installing a QNAP QM2 card allows support for M.2 solid-state drives to cache data and further enhance the performance.

Fully Connected

The QNAP TS-251D-4G includes three USB 2.0 ports and three USB 3.1 Gen 1 Type-A ports, which can transfer up to 5 Gb/s with compatible devices.

4K Video Transcoding

Featuring Intel UHD Graphics, the TS-251D-4G supports dual-channel 4K hardware decoding and real-time transcoding to convert videos into different file formats to be played on various devices. You can also connect a 4K TV or monitor through the HDMI port or install a media streaming application to use the NAS as a media server.

Snapshots

With snapshots, you can fully record the system status and data to protect against accidental deletion or modification. The TS-251D-4G supports up to 1024 snapshots per NAS and 256 snapshots per volume or LUN.

QTS Operating System

The app-driven QTS operating system includes multiple features to streamline file backup, management, and more. Features include the QmailAgent email backup manager, Notes Station 3 for collaborative communication, the Smart Filing organizing and archiving app, and Full-Text Search to quickly locate documents, emails, and other files.
UPC: 885022018697

QNAP TS-251D Specs

General
Number of Bays2 x 2.5"/3.5"
Media Card SlotsNone
Connections1 x RJ45 (Gigabit Ethernet)
3 x USB Type-A (USB 2.0 (480 Mb/s))
2 x USB Type-A (USB 3.1 / USB 3.2 Gen 1 (5 Gb/s))
1 x HDMI Type-A (HDMI 2.0)
Compatible Drive InterfaceSATA III
Form FactorDesktop
RAID ModesRAID 0, 1, JBOD, Single
Hot-Swap SupportYes
Expansion Slots1 x PCIe 2.0 x4
Drives
TypeNone
Computing
ProcessorIntel Celeron Dual-Core
Clock SpeedBase: 2 GHz / Maximum Boost: 2.9 GHz
GPUIntel HD Graphics 600
Total Installed Memory4 GB DDR4
User-Replaceable Memory1 x 4 GB
Total Memory Slots2 x SO-DIMM
Maximum Memory Capacity8 GB
Networking
Supported ProtocolsAFP
CIFS/SMB
FTP
FTPS
FXP
HTTP
HTTPS
IPv4
IPv6
SFTP
SNMP v2
SNMP v3
SSH
SSL
Telnet
WebDAV
iSCSI LUN256
iSCSI Target256
Max Cameras Supported8
Max Concurrent Connections90
Max Sync Tasks500
Software
Installed Operating SystemQTS 4.4.1
OS CompatibilitymacOS 10.7 or Later
Linux
Windows 7 or Later
Windows Server 2003 or Later
File System Formats SupportedInternal: EXT4
External: EXT3, EXT4, FAT32, HFS+, NTFS, exFAT
Supported BrowsersChrome, Edge, Firefox, Internet Explorer, Safari
Electrical
Power Consumption15.25 W (Typical)
8.08 W (Standby)
Power SourceAC Adapter
PSU Wattage1 x 65 W
AC Input Power100 to 240 VAC, 50 / 60 Hz
Security
EncryptionAES-NI
Security FeaturesKensington Security Slot
Environmental
Operating Temperature32 to 104°F / 0 to 40°C
Operating Humidity5 to 95%
Physical
Cooling1 x 70 mm Fan
Noise Level16.7 dBA
Built-In SpeakersNone
Audible AlarmYes
IR SensorYes
Status MonitoringLED Indicator
Dimensions4.13 x 6.61 x 8.9" / 104.9 x 167.89 x 226.1 mm
Weight3.26 lb / 1.48 kg
Packaging Info
Package Weight5.645 lb
Box Dimensions (LxWxH)12.3 x 10.9 x 8.1"
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