LaCie 2big Dock Thunderbolt RAID Hard Drive 40TB
- 40TB desktop RAID
- Up to 550MB/s
- Dual Thunderbolt 3 ports, USB 3.2 Type A hub port
- CFexpress Type B, CFast 2.0 and SD card slots
- DisplayPort output
- RAID 0/1 via wizard
- Hot-swappable IronWolf Pro 7200 rpm drives
- 3 year manufacturer warranty
Last refreshed Sep 23, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A desktop RAID and dock with built-in card readers for photographers and video crews who offload cards at the desk. It is heavy and stays put, so it is not for travel.
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ASIN: B09TWV7W2DModel: 2big DockCategory: External Hard Drives
Overview
Photo and video editing desks where cards come in from shoots are where this LaCie RAID earns its spot. Card slots for CFexpress, CFast and SD offload footage directly, and Thunderbolt ports and a display output turn it into a laptop dock.
Card readers, a hub and RAID storage in one box cut down on dongles for laptop-based editors. Spinning drives limit speed, and the unit is too heavy to carry.
Who it's for
Creative studios get card offloading, docking and mirrored or striped storage in one unit. Field shooters on the move need portable SSDs.
Pros and cons
- Built-in pro card readers
- Docks a laptop with display out
- Large RAID capacity
- Data recovery service
- Heavy desktop unit
- Hard drives slower than SSD
- DisplayPort version listed oddly
Performance notes
Card readers feed footage straight onto the RAID, which removes a step in the offload workflow. Striping doubles speed and mirroring protects against a drive failure. Throughput is limited by the hard drives, not by Thunderbolt.
Specifications
| Brand | LaCie |
|---|---|
| Model | 2big Dock |
| Dimensions & fit | |
| Item weight | 3.86 kg |
| Capacity & performance | |
| Digital Storage Capacity | 40 TBhigher than 99% of 144 external hard drives |
| Read Speed | Up to 550MB/s |
| Hard Disk Rotational Speed | 7200 rpmhigher than 64% of 57 external hard drives |
| Warranty & support | |
| Warranty Description | 3 year manufacturer, Rescue Data Recovery Services |
| Other details | |
| Card slots | CFexpress Type B, CFast 2.0, SD |
| Raid modes | RAID 0/1 |
| Ports | Dual Thunderbolt 3, USB 3.2 Type A hub port, DisplayPort |
| Drives | IronWolf Pro, hot-swappable |
Closest rivals on specs
WD My Book Duo Desktop RAID External Hard Drive 28TB- Digital Storage Capacity 40 vs 28 TB (+43%)
- Hard Disk Rotational Speed 7200 vs 5400 rpm (+33%)
Seagate Expansion Desktop STKP26000400 Hard Drive 26TB- Digital Storage Capacity 40 vs 26 TB (+54%)
SanDisk Professional G-Drive Enterprise Desktop Hard Drive 26TB- Digital Storage Capacity 40 vs 26 TB (+54%)
Frequently asked questions
Is the LaCie 2big Dock portable?
No. It is a desktop RAID weighing 3.86 kg, meant to stay on the desk.
Which memory cards can the LaCie 2big Dock read?
CFexpress Type B, CFast 2.0 and SD cards.
Does the LaCie 2big Dock work with Thunderbolt 4 laptops?
The description lists Thunderbolt 4, Thunderbolt 3, USB4, USB 3.2 and USB 3.0 compatibility.
Can I mirror drives in the LaCie 2big Dock?
Yes. RAID 1 mirrors for redundancy, RAID 0 stripes for performance.