LaCie 5big Thunderbolt 2 Hard Drive 20TB

Incredibly high speed desktop storage Hard Drive with RAID 0, 1, 5, 6, 10 JBOD for 4K Video editing with Thunderbolt 2

For 4K and other bandwidth-hungry workflows, external storage needs to be fast, secure, reliable, and quiet. The new LaCie 5big fits the bill, delivering Thunderbolt 2 speeds for 4K video editing, up to 40 TB capacity, and hardware RAID 5/6 for no-compromise data security.

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£1,449.00 £1,207.50
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LaCie’s 5big surpasses what the market has come to expect from high speed desktop storage by aiming for, and achieving, a ground breaking redesign. A mechanised overhaul sets new benchmarks for consistency and adaptability. The LaCie 5big also provides premium performance thanks to Thunderbolt 2 technology and RAID hardware, and 20TB of storage.

It’s no longer that case that an interface is the debarring factor in a storage solution’s speed, thanks to Thunderbolt 2 technology. LaCie have succeeded in pressing the absolute best speeds out of its hard disks because the 5big capitalises on the Thunderbolt 2 I/O’s breakthrough performance potential. Continuous speeds of up to 1050 MB/s, capable of turbocharging file transfers and backups, are possible with the simple hardware additions of a RAID controller and 7200 RPM disks. The unit can run RAID 0, 1, 5, 6, 10 and JBOD.

A Digital photographer can enjoy seamless perusal of a massive RAW photo library with zero lag. Videographers re empowered to edit multiple 2K uncompressed 10-bit streams, or play back compressed 4K video with this kind of speed. Daisy chaining higher-resolution displays, like 4K monitors, is also now a possibility.

The LaCie 5big achieves top-line speeds on any late-model PC or Mac with USB 3.0 and Thunderbolt 2 interfaces. USB 3.0 backward compatibility makes it possible to connect the LaCie 5big to any standard PC. You can seamlessly connect to both PC and Mac computers without losing your RAID configuration, with support for exFAT and built-in hardware RAID. Whatever your workstation, move mountains of data – fast. Included LaCie Private-Public software also enables AES 256-bit encryption to password-protect volumes.

  • Up to 1050 MB/s speeds for 4K video editing
  • Hardware RAID 5/6 with hot swap
  • Dual Thunderbolt 2 ports for daisy chaining
  • Aluminum enclosure and whisper-quiet fan
More Information
Capacity 20TB
RPM 7200


  • 20TB 


Internal Storage Media

  • 5 x hot-swappable* 7200 RPM/64 MB cache (or greater) hard disks



  • 2 x Thunderbolt 2


Interface Transfer Rate

  • 20 Gb/s


Performance Benchmark

  • Reads | Writes (MB/s):
      • 20 TB RAID 0: 920 | 880
      • 20 TB RAID 5: 700 | 720


Thunderbolt 2 Technology

  • Bidirectional 20 Gb/s permits a high-resolution display and RAW 4K video editing


Power-Saving Mode

  • Reduce power consumption by pressing the front button to spin down disks without disrupting daisy chain transfers (short press initiates power-saving mode; long press turns product off completely)


RAID Modes

  • Preconfigured HFS+ RAID 5
  • Hardware RAID 0 / 1 / 5 / 6 / 10 / JBOD
  • Configure RAID using LaCie RAID Manager software


Daisy Chain

  • Connect up to six Thunderbolt-compatible devices – including Thunderbolt 2 and LaCie Thunderbolt Series products – to a computer via a single Thunderbolt cable



  • AES 256-bit software encryption
  • Kensington lock compatible
  • Cable lock



  • Aluminum enclosure with improved internal heat dissipation Thermoregulated Noctua® cooling fan: effective and whisper-quiet cooling


Additional Features

  • System monitoring and email alerts for failure or warning events



  • Standby: Negligible
  • Idle: 25-28 dBA
  • Operating: 25-29 dBA


Power Supply

  • 100-240 V; 50/60 Hz; 150 W


Dimensions (W x H x D)

  • 173 x 220 x 196 mm | 6.8 x 8.6 x 7.7 in.



  • 7.6 kg | 16.8 lbs


System Requirements

  • Computer with a Thunderbolt 2 or Thunderbolt port
  • Latest version of Windows 7, Windows 8 / Mac OS X 10.9 or later
  • Minimum free disk space: 600 MB recommended



  • Intego Backup Manager Pro for Mac
  • Genie Backup Manager Pro for PC
  • LaCie Private-Public (protect data with AES 256-bit encryption)
  • LaCie RAID Manager (administration console)
  • LaCie 5big Thunderbolt 2
  • External power supply
  • Thunderbolt cable
  • Drawer key
  • Cable lock clip
  • Quick Install Guide