QNAP TS-551 NAS for 2018 – More Information Released

The New QNAP TS-551 NAS for Business and Pleasure

The TS-551 NAS arrives with three 3.5-inch hard drive media storage and two 2.5-inch SSD media dedicated ports. This means you are able to utilize the popular RAID 5 configuration for your bulk storage to get the most capacity from your drives while enjoying SSD cache to boost your internal rear and write speed. The 3.5-inch hard drive tray even features a tool-free snap-on design that makes it easier to install and hot-swap media. This combined with advanced virtualization capabilities and diverse productivity applications add multimedia and intelligent management potential to the TS-551 to help you handle your daily tasks and work more efficiently.

Qtier automatic tiered storage and SSD caching technology provide 24×7 full-time storage acceleration.

Support 4K H.264 hardware decoding and video transfer files for a smooth audio and video experience.

The snapshot completely records the system status and data. When an accident occurs, the system can be quickly restored to a normal state through snapshots.

Establish a secure and reliable private cloud to centrally manage file storage, backup, sharing, and disaster recovery.

Support for virtualized storage; can run multiple virtual machines and software containers, one machine and multiple systems.

The QNAP TS-551 NAS CPU and Memory Details

The TS-551 is equipped with a 14nm nanotechnology Intel® Celeron® J3355 dual-core 2.0 GHz processor (with a bursting frequency of 2.5GHz) and 2GB of DDR3L dual-channel memory (expandable to 8GB) with 2 Gigabit network ports and supports the latest 12TB and 14TB NAS hard drives.

The transmission provides excellent continuous read performance for smooth and fast tasks. The TS-551’s built-in Intel® AES-NI next-generation encryption engine maintains smooth and fast data read and write speeds even when AES 256-bit NAS encryption is accelerated while maintaining important NAS data while maintaining system performance and safety.

QNAP TS-551 NAS SSD Support

The TS-551 provides two 2.5-inch SSD dedicated ports that enable SSD caching, which accelerates IOPS performance for disk access and meets the performance needs of dense access applications. QNAP’s Qtier technology gives automatic tiered storage services, helping the TS-551’s 2.5-inch SSD and high-capacity SATA hard drive storage space to achieve uninterrupted storage, improving system performance and economical system configuration. The latest Qtier 2.0 IO Aware feature can be used to store key data directly in the SSD layer and can be used directly to store key data, allowing high-priced SSDs to realize their value and improve storage cost performance.

QNAP TS-551 NAS with HDMI and 4K Support

The TS-551 uses the Intel HD Graphics 500 graphics chip with excellent processing performance to support 4K H.264 video hardware decoding playback and transfer files, and can smoothly transfer movies to files on various devices in real time. You can download a wide range of audio and video applications in Ubuntu® Software Center on Linux Station, such as Plex Media Server, KMPlayer, Kodi (unofficially), LibreOffice, VLC, etc. You can also use HD Player on HD Station or third-party players (such as Plex) and QNAP Home Theater to connect HDTV or A/V amplifier through HDMI output, and directly enjoy 4K high-resolution video files in TS-551. You can use the QNAP remote control (optional purchase) to easily control the multimedia entertainment experience with the QButton function. Note: The processor and hardware specifications of the TS-551 provide H.264 8-bit hardware accelerated decoding, encoding, and transfer files. The actual video presentation quality will vary depending on the playback software, file format, system resource usage, and network bandwidth used.

QNAP TS-551 NAS SUpports Diverse video Streaming Options, such as:

QNAP offers a wide range of video streaming applications, so you can easily stream photos, music and movies from your NAS to your computer or TV for a convenient audio-visual entertainment experience.

QVHelper can stream audio and video files or music playlists from the NAS to a VLC player on your computer.

Qmedia streams music, photos and videos to a networked Android TV (Smart TV) or TV box/TV stick (set-top box).

QNAP Video HD is a free KODI kit that combines KODI’s powerful playback and audio and video format decoding capabilities with full support for Video Station functionality (the core 1st party media application for video on the QNAP NAS system).

QNAP TS-551 NAS File Sharing, Synchronization and Backing up

The TS-551 centrally stores and manages various data and supports protocols such as SMB/CIFS, AFP, and NFS for file sharing between different operating systems such as Windows®, Mac®, and Linux®/UNIX®. With the Qsync sync widget, any file uploaded to the TS-551 can be read on other desktops, laptops or mobile devices connected to the NAS; you can sync shared folders and create a project team-specific group Folders, multi-person collaboration and cooperation; and use File Station to directly access mobile devices, files in Blu-ray drives, or remote NAS mount and browse cloud space files. QNAP provides a reliable, resilient backup and disaster recovery solution that helps organizations achieve cost-effective, cost-effective, routine data backup tasks.

Volume and LUN snapshots

Block-based snapshots provide a reliable guarantee in a network environment where crypto-ransomware is in crisis. You can take a snapshot in either scheduled or manual mode and back up the snapshot archive to another NAS or server.

Windows® and Mac® backup

Back up/restore data from Windows® laptops or desks with the free QNAP NetBak Replicator backup tool; backup tasks for Mac® devices with Time Machine® support. Everything is so simple, fast and convenient.

Hybrid Backup Sync (Hybrid Backup and Sync Center)

Integrate data backup, recovery and synchronization (via RTRR, rsync, FTP, CIFS/SMB protocols) to help you easily back up or sync data from TS-551 to another QNAP NAS, remote server, or cloud Backup space, centralized management of backup and disaster recovery plans.

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QNAP TS-551 NAS – Full Specifications

Below are the internal hardware specifications of the new TS-551 NAS from QNAP. Also, do check out Release and availability information by clicking the button below.


Intel® Celeron® J3355 dual core 2.0 GHz with up to 2.5 GHz

Hardware encryption engine


Standard system memory

1 x 2GB DDR3L

Maximum expandable memory


Number of memory slots

2 x SODIMM slot

Flash memory


Number of hard disks supported

3 x 3.5″ SATA 6Gb/s HDDs
2 x 2.5″ SATA 6Gb/s
with hot plug

Gigabit Ethernet port

2 x Gigabit RJ45

HDMI outputĺź 

1 x HDMI v1.4b (highest resolution 3840 x 2160 @ 30Hz)


Output: Built-in speaker and 3.5mm line out jack

USB port

3 x USB 3.0 (front: 1; back: 2); 2 x USB 2.0 (back)

LED indicator

Status / Power, Network, USB, Hard Disk 1 – 3, SSD 1 – 2


Power, reset, USB one-button backup

Infrared (IR) receiver

Yes (requires RM-IR004 remote control)

System alert

Smart voice prompt



Size (height x width x depth)

220 x148 x182 mm
8.66 x 5.82 x 7.16 inch


Net weight: 2.6 kg (5.73 lbs)
gross weight: 3.8 kg (8.37 lbs)

power supply

External power supply 90W, 12V

Power consumption (Watts)

Hard disk standby: 15.82 W
running: 29 W
(installing 3 HDDs and 2 SSDs)

Noise value

Sound pressure (LpAm): 25.0 dB(A)


1 x 9.2cm smart fan (12V DC)

Working temperature & relative humidity

0 ~ 40 ĚŠC (32 ĚŠF ~ 104 ĚŠF ), 5~95% non-condensing environment, wet bulb temperature: 27 ĚŠC (80.6 ĚŠF)

Other interface

Kensington security lock


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