LaCie 2Big Thunderbolt 3 Dock Review: A complete solution for professionals

Seagate owned LaCie, known for its storage options, recently launched its 2Big Thunderbolt 3 Dock that doubles as a storage device and docking station. The Thunderbolt 3 port ensures that it’s compatible with latest MacBook Pros and can deliver lightning-fast data transfer speeds.

You can connect multiple drives together, or connect other I/O options using the USB 3.0 Type-C port and display port. There is also a MicroSD card slot, compact flash port, and provision to charge through other devices. And the LaCie 2Big Thunderbolt 3 Dock comes with a 5-year warranty! Is it a complete docking station for professionals? We will try and answer that in our LaCie 2Big Thunderbolt 3 Dock Review.

Storage: Read/write and transfer speeds

2BigThunderbolt has a premium Aluminium casing and comes with several storage capacity options – 8TB, 12TB, 16TB, and 20TB. You also have the option to connect multiple of these together for even higher capacity.

The capacity is split between two 7200 RPM IronWolf Pro drives, which are high-quality storage drives from Seagate. By default, these drives are formatted in RAID 0, which is to say that there will be no data redundancy but you won’t get data protection. You can change the format to RAID 1 if you need more reliability at a small performance penalty.

In the default configuration, we managed to get a write speed ranging from 380 MBps to 450 MBps, which is close to the advertised number of 440Mbps. Practical Reed speed that we are getting is around 390-460 MBps. The results are for 20TB version and the performance might vary depending on the variant you use and the type of file you are using.

Data transfer is blazing fast too. We could transfer 17 GB data from MacBook Pro to 2Big Thunderbolt 3 Dock in under 1 minute. Since we edit a lot of videos we constantly ran out of storage on our 256 GB MacBook Pro. Lacie 2Big Thunderbolt 3 Dock did solve that issue as it provides ample of storage with fast read and write speeds.


2Big Thunderbolt 3 dock is also future ready and has all sorts of ports to be an integral part of a professional workstation. On the front, you will find a USB 3.0 Type- A port, SD Card reader, and Compact Flash Reader. Ports present on the rear include a Power input, 2 Thunderbolt 3 ports, a USB 3.1 Type-C port, DisplayPort video out that supports up to 5K monitors, and Kensington security lock slot. A Thunderbolt 3 Cable also comes bundled in the box.

As for charging, the 2Big provides 27W of power over USB 3.1 and 15W of power over Thunderbolt 3, which is certainly on the lower side. You can use the front USB 3.1 Type-A port to charge gadgets or to connect other storage drives.

You could also use any one of two Thunderbolt ports on the rear to bundle 5 of these docks together.

Verdict and Price

Our practical experience with the 2Big Thunderbolt 3 Dock has been very smooth. We didn’t experience any sort of lag while accessing or playing files directly stored on the drive on our Macbook. Data transfer is blazing fast too.

The extensive set of ports available make it a versatile solution fit for creative professionals. Besides, in future, you could easily expand the storage by simply stacking another 2Big Dock on top or by swapping drives.

Of course, we wouldn’t have accepted any lesser for the price. The 8 TB variant of 2Big Thunderbolt 3 Dock is available on Amazon for 54,000 INR. The 20TB Variant that we reviewed is available for roughly around 120,000 INR.

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Pooja is passionate about blogging and Tech which makes life easier and interesting. While she is not exploring tech trends, you can find her devouring epic fantasy adventure literature and movies from across the globe.