12big Thunderbolt 3

Was this content helpful?

Note: This device is not currently compatible with Macs that have the Apple M1 chip.


Model Data Sheet User Manual Capacity Weight (kg/lb)
12big Thunderbolt 3 48TB

5-year limited warranty

48TB 16.4/41.888
12big Thunderbolt 3 72TB

5-year limited warranty

72TB 17.6/41.888
12big Thunderbolt 3 96TB

5-year limited warranty

96TB 17.6/41.888
12big Thunderbolt 3 120TB

5-year limited warranty

120TB 16.4/41.888
Internal Storage Media 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.
Interfaces 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
Interface Transfer Rates (maximum theoretical bus speed) Thunderbolt 3: 40Gb/s
USB 3.1: 10Gb/s
Performance Benchmark 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
Interface Technology 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
Daisy Chain Connect up to five Thunderbolt 3 or one USB 3.1 device or a high-resolution display via a single USB-C cable
RAID Modes 0/1/5/6/10/50/60
Redesigned LaCie RAID Manager for easy hardware RAID selection and management
Security Kensington® lock compatible
Cooling 4 × redundant fans
Heat-dissipating all-aluminum enclosure
Additional Features 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
Power Supply 100-240V; 50/60Hz; 400W
Dimensions (W × H × D) 161 × 447 × 237 mm | 6.3 × 17.6 × 9.3 in.
Minimum System Requirements 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.
Software Intego® Backup Manager Pro
Genie® Backup Manager Pro
LaCie RAID Manager
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 disks
Quick Install Guide