LaCie 2big

Thunderbolt™ Series

2-Bay RAID | Dual Thunderbolt

Thunderbolt Power. 2big Versatility and Capacity.

  • Shocking speeds up to 327MB/s
  • RAID flexibility: speed or security with Mac® OS
  • Dual Thunderbolt ports for daisy chaining
  • Two hot-swappable disks for non-stop
    data access
Design by Neil Poulton

Certified compatible with Mac and PC

Current Price

Available at LaCie resellers only

3-Year Limited Warranty Included

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Out of Stock


  • The Essential Professional Storage
    All-in-one solution for professional workflows.
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  • Lightning Speeds Save Time
    Performance to spare for data-heavy applications.
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  • RAID for Speed or Security
    Mac OS RAID and swappable disks for performance or data security.
    Learn more >

  • Daisy Chain to Multiply Options
    Connect multiple devices for more speed and convenience.
    Learn more >

  • Aluminum for Reliability and Security
    Optimum reliability thanks to advanced dual cooling.
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The Essential Professional Storage

With speeds up to three times faster than FireWire 800, LaCie 2big Thunderbolt Series also features RAID security, hot-swappable disks, and daisy chain convenience. Heavy data users can turbo charge their workflow with jaw-dropping speed improvements. And capacities up to 10TB* on 7200rpm hard disks deliver the professional storage they demand. Improve your workflow. Get huge data storage. Ensure full data protection.

How it works:

Lightning Speeds Save Time

Transfer rates up to 327 MB/s**. More speed, more efficient workflow.


Backups take a fraction of the time, letting you back up more frequently.

Photographers using Lightroom® or Aperture® will notice significantly more responsive photo library browsing.

Videographers working in Final Cut Pro X® or other professional software can even stream multiple HD video streams directly from the drive.

Performance Comparison

Choose your mode:

(RAID 0)

(RAID 1)


RAID for Speed or Security

Use Disk Utility on your Mac OS to configure the 2big Thunderbolt Series into a RAID array that suits your needs. It's possible to set it up as a mirrored RAID set (RAID 1), which provides data protection if one disk fails. Thanks to its removable disks, you can simply replace a disk, with zero data loss and no work interruption.

Alternatively, configure it as a striped RAID set (RAID 0) to maximize speed and capacity for large file storage and fast transfers. It even supports JBOD, which lets you assign each disk to a specific data storage task. For instance, you can put backups for even weeks on one disk, and odd weeks on the other.

LaCie also offers the RAID Monitor software for your 2big Thunderbolt Series. It alerts you when a disk needs maintenance, identifies which drive has failed, and helps you to resolve the issue.

Daisy Chain to Multiply Options

Thunderbolt technology is the most flexible interface ever created. With dual Thunderbolt ports on the 2big, you can daisy chain up to six Thunderbolt peripherals together. That means you don't need to buy a hub to connect multiple devices to a single Thunderbolt port on your computer. In addition, it increases the total amount of storage you can make available to your Mac.

Daisy chaining multiple 2bigs even pushes overall performance to more than 670MB/s** for your most data-intensive tasks. Thunderbolt technology is also mini-DisplayPort compatible. For example, you can connect a display and a 2big to your Mac via a single Thunderbolt cable.

Aluminum Reliability and Security

The 2big's advanced dual cooling system ensures long-term reliability by preventing overheating. Its solid-aluminum casing provides 60% more surface area, which diverts and dissipates heat more efficiently. In addition, its thermo-regulated fan turns on and off according to internal temperature. As a result, it cools the components while reducing electricity usage. For more energy savings, the front power button even lets you turn off the product without breaking a daisy chain connection.

Designed for Professionals

The 2big Thunderbolt Series was painstakingly designed to integrate seamlessly into professionals' workspace. The ultra-quiet cooling fan makes the 2big perfect for even the most noise-sensitive creative environments. What's more, you can stand it alone vertically, or lay it horizontally on your desk to stack with multiple products. Even neatly stack it with the LaCie d2 Desk Rack or standard 19" Rackmount Kit.

* 1TB (Terabyte) = 1000GB. 1 GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less).
** These transfer rates were achieved using AJA System Test with a 6TB 2big Thunderbolt Series in RAID 0 when connected to a 17" MacBook Pro 2.2Ghz Quad Core and 4GB RAM with 32k block size. Thunderbolt and the Thunderbolt logo are trademarks of Intel Corporation in the U.S. and/or other countries.

Item Number : 
Capacity : 
Interface :  Dual 10Gb/s Thunderbolt ports for daisy chaining
Included Disks :  2x swappable hard disks
Rotational Speed (rpm) :  7200rpm
Cache :  64MB (2x 32MB) or greater
Interface Transfer Rate
(max. bus speed) : 
Up to 10Gb/s
Average Transfer Rate :  >327MB/s read, >319MB/s write
Protocols :  Data: PCI Express
Video: Dual-Mode DisplayPort
Data Channels :  10Gb/s independent uplink and downlink
Video Channels :  10Gb/s independent uplink and downlinks
Daisy Chain :  Up to six Thunderbolt technology-compatible devices including LaCie Thunderbolt series products, other Thunderbolt technology-compatible devices, and LaCie professional displays
RAID Modes :  Preconfigured RAID 0 striped set
RAID 0 / 1 / JBOD configuration using Mac OS Disk Utility
Power :  Low power mode allows for daisy chaining
Power Supply :  100-240Vca; 50/60Hz
Cables Technology :  Thunderbolt cables
Cooling :  Aluminum enclosure with heat sink design for 60% better cooling
High performance fan
Dimensions (WxHxD) :  3.5 x 6.7 x 7.8 in. / 91 x 172 x 200 mm
Weight :  7.7 lbs / 3.5 kg
System Requirements :  • Computer with a Thunderbolt port
• Latest version of Mac OS 10.6, 10.7, 10.8, or greater / Windows 7, Windows 8 (click here for Windows drivers information)
• Minimum free disk space: 600MB recommended
Box Content :  • LaCie 2big Thunderbolt Series
• Drive stand for upright use
• Thunderbolt cable
• External power supply
• CD with User Manual and software (Intego Backup Manager Pro )
• Quick Install Guide
Comments :  * 1TB (Terabyte) = 1000GB. 1 GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less).
** These transfer rates were achieved using AJA System Test with a 6TB 2big Thunderbolt Series in RAID 0 when connected to a 17" MacBook Pro 2.2Ghz Quad Core and 4GB RAM with 32k block size.

Specifications and appearance are given as guidelines and may change without notice.


Testimonial - James Horner
October 2012
“The incredible speed that we get from the LaCie 2big helps me visualize very fast. I can work faster, saving three or four hours a day.”
– James Horner
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Testimonial - Marco Sweering
July 2012
“The LaCie 2big Thunderbolt Series has sped up the time it takes to complete projects while significantly improving my workflow.”
download PDF >