12big Thunderbolt 3

Capacity and Performance Like No Other

Rein in the stampede of data from 4/5/6K cameras with massive desktop capacity, up to 2600MB/s blazing-fast speeds, and the versatility of RAID 5/6 with the Lacie 12big Thunderbolt 3.

LaCie 12big Daisychain

The Absolute Fastest I/O

For the 12big, LaCie harnessed the breakthrough performance potential of the Thunderbolt 3 I/O to help slash time off nearly every task in your post-production workflow.

  • Up to 2600MB/s in RAID 0
  • Up to 2400MB/s in RAID 5

LaCie 12big State Change

Capacity: Bigger in Every Way

With loads of capacity on your desktop, you can safely store massive amounts of ultra hi-res footage. Instead of buying a new storage device every time you need more capacity, invest up front in a future-proof, RAID-protected solution. Improve data access and security while helping to save money in the long term.

IronWolf Pro 14TB

Enterprise-Class Drives

12big features IronWolf® Pro enterprise-class drives, which are ideal for:

  • Multi-drive environments
  • A wide range of capacities
  • RAID optimization
  • Superior power management
  • 300TB/year workloads


RAID: For Optimized Speed and Security

With support for hardware RAID 5 and 6, the LaCie 12big gives you the tools to optimize your storage for speed, data security, and capacity.

Using LaCie RAID Manager, you can take advantage of a user-friendly interface to set up and monitor your storage. It offers advanced features such as auto rebuild, and wizards to create and manage volumes.

Warranty Rescue

Long-Term Peace of Mind

IronWolf Pro drives are covered with a 5-year limited warranty that includes Rescue Data Recovery Services. If something goes wrong, we will replace your drive and recover your files with one in-lab data recovery service at no additional cost.

LaCie 12big Warranty

If your system fails, simply make a claim and you'll have a replacement unit within a few days, with 25 days to return the failed unit.

LaCie 12big Box

What’s Included

  • LaCie 12big Thunderbolt 3
  • Power cable
  • USB-C (Thunderbolt 40Gb/s or USB 3.1 10Gb/s) cable
  • USB-C to USB-A cable
  • Hard drives
  • Quick install guide

Weight (kg/lb)
Internal Storage Media
Interface Transfer Rates (maximum theoretical bus speed)
Performance Benchmark
Interface Technology
Daisy Chain
RAID Modes
Additional Features
Power Supply
Dimensions (W × H × D)
Minimum System Requirements
What’s Included
48TB 72TB 96TB 120TB 168TB
16.4/41.888 17.6/41.888 17.6/41.888 16.4/41.888 19,000/41.888
12× hot-swappable IronWolf Pro 128MB cache (or greater) enterprise class hard drives Hot swapping will result in data loss in a RAID 0 array.
2 × Thunderbolt 3
1 × USB 3.1 USB limitations: a single volume mounts on the host, and speeds are limited to approximately 400MB/s.
USB 3.0 and USB 2.0 compatible using included USB-C to USB adapter cable
Thunderbolt 2 compatible with Thunderbolt 2 to Thunderbolt 3 adapter cable sold separately
Thunderbolt 3: 40Gb/s
USB 3.1: 10Gb/s
Thunderbolt 3 (reads | writes in MB/s):Actual data rates may vary depending on operating environment and other factors, such as RAID mode, RAID configuration, and disk capacity.
RAID 0: 2600 | 1700
RAID 5: 2400 | 1200

USB 3.1 (reads | writes in MB/s):
RAID 0: 400 | 400
RAID 5: 350 | 350
Both Thunderbolt 3 and USB 3.1 through a single reversible USB-C cable
Bi-directional, dual-protocol, and supports dual 4K displays or one 5K display
Connect up to five Thunderbolt 3 or one USB 3.1 device or a high-resolution display via a single USB-C cable
Redesigned LaCie RAID Manager for easy hardware RAID selection and management
Kensington® lock compatible
4 × redundant fans
Heat-dissipating all-aluminum enclosure
Front-facing status LEDs for disk, power, and alarm events
System monitoring, audible alarm, and email alerts for failure and warning events via LaCie RAID manager
100-240V; 50/60Hz; 400W
161 × 447 × 237 mm | 6.3 × 17.6 × 9.3 in.
Computer with a USB-C (Thunderbolt 3 or USB 3.1) or USB Type-A port
Latest version of macOS® 10.12 or later (macOS 10.9 or later required for USB 3.1) / Latest version of Windows 10 or later (Windows 8 or later required for USB 3.1)
Minimum free disk space: 600MB recommended

Note: Your PC may need updates for the Thunderbolt 3 ports to function properly.
Intego® Backup Manager Pro
Genie® Backup Manager Pro
LaCie RAID Manager
LaCie 12big Thunderbolt 3
Power cable
USB-C (Thunderbolt 40Gb/s or USB 3.1 10Gb/s) cable
USB-C to USB-A cable
Hard disks
Quick Install Guide