QNAP TS-253d vs TS-251d

Compared to QNAP TS-251d, the other variant, TS-253d delivers good performance as its operating system gives better output and offers a Quad-Core processor. However, it offers 295 MBps and 293 MBps of download and upload speed respectively, which is much lower compared to TS-251d.

QNAP TS-251D comes with 8 GB ram (2×4 GB), just like the TS-253D

Lets check out Similarities and Differences of these NAS devices:

The QNAP TS 253D:

  • possesses Quad-Core while TS-251d possesses a Dual-Core processor.
  • features QTS 5.0.0 OS while TS-251d has QTS 4.2 OS (older)
  • delivers a higher operating speed.
  • offers a greater raw capacity.

But this device also:

  • weighs more.
  • is noisier.
  • is slightly more expensive.

QNAP TS-253d features an Intel Celeron J4125 Quad-Core processor.

It offers 2 number of bays and has a SATA III interface.

The maximum Raw capacity offered by this device is 28TB.

Moreover, being an SMB model, it is highly favorable for use in a small office.

QNAP TS-251d comes with an Intel Celeron J4025 Dual-Core processor and its maximum raw capacity is limited to 24TB.

It also follows a SATA III interface and has two bays just like its counterpart.

It is a bit lighter in weight and operates at a lower speed.

Moreover, it is designed for personal use and is not a decent option for office use.



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QNAP TS-253d comes with a polished black outlook which is quite attractive. It has a rectangular box shape. Its front panel features a power button on the upper left corner.

Status, LAN, USB, and status LEDs run vertically downwards just below the power button.

The lower-left corner of the front panel is occupied by a USB 3.2 Gen1 one-touch copy Type-A port and a USB one-touch copy button.

Moreover, its rear panel contains a system fan, a reset button, USB ports, GB Ethernet ports, power input, and a Kensington security slot.

QNAP TS-251d also follows a rectangular box-shaped design with elegant blue and white shades. Its front panel also features a power button on the upper left corner and LEDs i-e status, LAN, USB one-touch, drive 1 and 2, run down vertically.

The lower end is occupied by the USB one-touch copy port and button.

The rear panel contains a system fan, Ethernet port, GB Ethernet LEDs, Kensington security slot, USB 3.0 Type-A port, HDMI 2.0 port, and a reset button.

Features & ParticularsTS-253d  TS-251d
Processor2.0 GHz Intel Celeron J4125 Quad-Core2.0 GHz Intel Celeron J4025 Dual-Core
Drives Included2 × 4TB 3.5” HDD2 × 4TB 3.5” HDD
Speed295 Mb/s982 MB/s
Number of Bays2 x 2.5”/3.5”2 × 2.5”/3.5”
Ports2 x 2.5 GB Ethernet/ 3 USB 2.0
2 USB 3.2 Gen1 
1 GB Ethernet
3 USB 2.0
2 USB 3.2 Gen1
Physical Dimensions168 × 105 × 226 mm168 × 105 × 226 mm
Weight1.55 kg / 3.41 lbs1.48 kg / 3.26 lbs
Warranty Period5 years5 years

Is QNAP TS-253d Faster?

There is a big difference in the speed of both devices. QNAP TS-253d delivers a download speed of 295 Mbps and upload speed of 293 Mbps. Its read and write speed is limited to 90 Mbps only.

QNAP TS-251d is much faster than its opponent and offers a read speed of 982 Mbps and 892 Mbps of write speed.

So, this device having an operating speed of 982 Mbps is a much better option in this regard.

Available Models and Space Variants

QNAP TS-253d series offer five different models i-e TS-253d-4G having 2 bays, TS-453d-4G having 4 bays, TS-453d-8G having 4 bays, TS-653d-4G and TS-653d-8G having 6 bays.

Moreover, the model being discussed here has no space variants.

TS-251d is not included in any series of QNAP models as it is categorized as a Home-High-End model designed for personal use.

However, it has 2 space variants i-e QNAP TS-251d-4G and TS-251d-2G having 2 bays and maximum installed memory of 8GB.

Interface comparison

The interface associated with TS-253d is SATA III, which allows it to give an outstanding performance.

Cloud storage gateways recognize hybrid cloud petitions to confirm low-level data.

Moreover, you can enjoy excellent 4k graphics on an HDTV by HDMI 2.0 output as it offers real-time transcoding and 4K media playback.

QNAP TS-531d also follows a SATA III interface, allowing transcoding of full HD videos either online or offline. Its HDMI 2.0 output gives you an excellent audio-visual experience.

Moreover, through DLNA, AirPlay, and Plex you can create your personal cloud and stream your multimedia library.

Supported OS and Browsers

TS-251d is powered by the QTS 5.0.0 operating system which enables the fast sharing of large files and efficient storage of your personal data.

Some major client OS supported by this device are Apple Mac OS, RHEL 6.6, SUSE 12 or later Linux, CentOS 7, Ubuntu 14.0, IBM Aix 7, Solaries or later UNIX, some MS windows and MS window servers.

Moreover, browsers supported are Apple Safari, Mozilla Firefox, MS Edge, and Google Chrome.

TS-253d supports QTS 4.2 operating system which is slightly less efficient in its processing as compared to its counterpart. It supports the same client OS as supported by its opponent.

The same browsers are aided by this device i-e Safari, Firefox, MS Edge, and Chrome. So, in the case of OS, TS-253d is a better option.

Backup and Sharing

TS-253d has a multi-cloud backup so that you can easily backup your data by creating a backup job.

QNAP 4-Bay personal cloud is proved highly efficient for backup and sharing of data.

Hybrid Backup Sync (HBS) strengthens data backup and synchronization processes for easy transfer of data from your device to remote, local, and cloud storage devices.

Moreover, dual 2.5 GB Ethernet ports stimulate file sharing across the web.

QNAP’s Hybrid Backup Sync (HBS) is also found in TS-251d, which allows easy backup and synchronization of data from your device to the local servers and cloud devices.

First of all, backup job is to be created which is just a few clicks task.

In the case of sharing of data, this device lacks as it features a single 1GB Ethernet port.

Moreover, its Dual-Core processor is less profitable in its function and places it second to its counterpart in this job.

What is their Noise level?

Both NAS devices are almost equally noisy and the main reason of this noise is cooling fan.

The fans associated with both the models are of equal size i-e 1.70 mm and you can adjust their speeds.

However, QNAP TS-253d is noisier as compared to its competitor.

It produces an average noise of 17.1 dB whereas, the noise produced by TS-251d is 16.7 dB.

Warranty of these NAS Devices:

The manufacturer’s warranty of QNAP devices is valid for years.

Both the models being discussed here are highly durable and offer an extended warranty of 5 years.

If there is any default in your device you can return it and demand a new one by following some policy steps issued by the company.