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Best External 20TB Hard Drive

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Has your storage system ever failed you at a critical point when you needed to save a very important file due to lack of enough storage, or maybe the worst happened and you lost your files? 

If you haven’t experienced such, it is not something that anybody should wish on themselves, but it happens especially when you do not invest in an efficient storage system with more than enough storage space for your files. 

The selected hard drives are built with features that protect data from unauthorized users and they are built from enterprise-grade materials hence its unfailing sustainability. 

Our Top 3 Picks For The Best 20TB External Hard Drive 

WD Audio Book

Raid 0 Ready 20TB External Hard Drive

WD is a highly reliable brand when it comes to large storage capacity and the WD audiobook is one of the best 20TB external hard drives that are currently available in the market. 

Although advertised as a 20TB hard drive, the WD audiobook has up to 36TB storage capacity, making it highly reliable for storing important files and heavy data to free up space in your computer. 

This hard drive has a fast and unfailing read speed of 360MB/s and it also comes with a 256 bit of AES hardware encryption that is combined with an improved built-in WD software that acts as a personalized password against loss of data. 

The WD My book duo drive is further equipped with a built-in raid optimized drive that provides a reliable storage system for a two-disk array system with automatic management of the hard drive’s features for safety. 

Also, this Raid feature which comes as Raid-0 by default can be upgraded and reconfigured to Raid-1  to enable it to function as two separate drives with the needed WD Drive software

It is compatible with USB 3.1 Gen 1 and USB 3.0 and supports both USB Type C to Type C and Type C to Type A cables which makes it universally compatible with multiple devices. 

Pros and Cons


  • It has a read speed of 360MB/s.
  • It has a highly efficient security system that protects data against loss.
  • It is Raid-0 ready.


  • It requires formatting to be compatible with Mac OS. 
  • The read speed is not very high. 

Check it out on Amazon

G technology 

7200 Rpm 20TB External Hard Drive

G-technology is steadily gaining ground as one of the most reliable manufacturers of large capacity external hard drives and this hard drive has passed the satisfactory mark to qualify for a high capacity storage solution.

This 20TB drive is designed for projects that are highly demanding on storage space. It utilizes daisy-chaining that supports up to five extra devices, plus two removable enterprise-class 7200RPM hard drives that offer long-lasting power for heavy workloads and important data. 

Its auxiliary ports include two thunderbolts 3 ports that allow daisy-chaining of up to five extra devices while being connected to several drives, a USB 3.1 Gen 2 Type C port that has a fast sea transfer of 4k videos and HD photos, and an HDMI port that supports HDR and 4K videos and quick access to browse, edit and backup your digital library. 

Apart from supporting multi-stream HD 2K, 4K, and HDR videos, this G-technology is Raid-0 ready, plus it can be configured to Raid 1 for mirroring or JBOD for ultimate flexibility and it also has a read speed of 500MB/s.

All these state-of-the-art features are enclosed in an aluminum military grade frame that ensures durability and protects the hardware components against damage and thus, inversely protecting your data from loss. 

Pros and Cons


  • It has a read speed of 500MB/s.
  • It is Raid-0 ready.
  • It comes with two removable high-class 7200RPM hard drives.


  • Its fans have a very loud noise when running. 
  • It is heavy. 

Check it out on Amazon

WD Technology 

Dual Integrated Drive Supported 20TB External Hard Drive

This storage device comes with dual integrated drives that are set to mirror more by default so that all the data on the drive are automatically saved twice. 

The selling point of this centralized storage system is its easy synchronization and backup of pictures, videos, and other irreplaceable data,  making it easy to access already saved data at any point in time. It also supports wireless backup for multiple devices, in addition to easy synchronization with PCs, Mac computers, and cloud accounts.  

It has a USB port that offers flexibility on the transfer of data videos, documents, photos, and other files from other secondary storage devices and external hard drives.

All the data saved on this device can be easily accessed with the built-in intuitive My Cloud home app that allows easy upload and sharing of files anywhere and at any time with a suitable internet connection. 

The WD Cloud is compatible with Mac PC, iOS, and Android and it can be directly connected to the Wi-Fi router

Pros and Cons


  • It supports the wireless transfer of data.
  • It has a read speed of 360MB/s.
  • It has dual integrated drives that automatically save data twice.


  • It requires a stable internet connection.
  • Low read speed.

Check it out on Amazon


Storage systems are now on a different level especially with the introduction of a 20TB external hard drive that offers sufficient storage options for your files. 

A 20TB external hard drive is mostly suitable for heavy-duty workloads, big and multiple video surveillance systems, high capacity NAS drives, and even multiple computers that are connected to a slow local network.

Finding a 20TB external hard drive is not as relaxing as saving and accessing data on a storage system that can rarely run short of space, hence choosing from our top 3 picks for the best 20TB external hard drive is a smart move.

The importance of being armed with enough storage space can not be fully grasped until you’re in dire need of it. 

20TB external hard drive is an intelligent investment choice especially for large and growing firms that have a lot of important data.

I hope that this article was resourceful in your search for a 20TB external hard drive but if you still want to search for more options, you’ll find a lot of them on

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Favour Etim

Years of hard work, research, and internship in technologically and computer-related fields have helped Etim Favour to produce informative and engaging writings on computers and technology-related products. When Favour is not writing, you’ll find her answering questions to help gamers and office workers to build the best battlestation/workstation.

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