5big Thunderbolt 2


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Internal Storage Media
Interface Transfer Rate
Performance Benchmark
Thunderbolt 2 Technology
Power-Saving Mode
RAID Modes
Daisy Chain
Additional Features
Power Supply
Dimensions (W x H x D)
System Requirements
Box Content
40TB 30TB 30TB 30TB 30TB 20TB 20TB 20TB 10TB 10TB
5 x hot-swappable* 7200 RPM/64MB cache (or greater) hard disks

Enterprise Class:
5 x hot-swappable* 7200 RPM/256MB cache hard disks with 2 million hours MTBF and 24x7 power-on operation
Compatibility list
2 x Thunderbolt™ 2
20 Gb/s
Reads | Writes (MB/s)**
10TB RAID 0: 660 | 650
10TB RAID 5: 520 | 530
20TB RAID 0: 920 | 880
20TB RAID 5: 700 | 720
30TB RAID 0: 1050 | 900
30TB RAID 5: 840 | 840
40TB RAID 0: 1050 | 950
40TB RAID 5: 850 | 850
Bidirectional 20 Gb/s permits a high-resolution display and RAW 4K video editing
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)
Preconfigured HFS+ RAID 5
Hardware RAID 0 / 1 / 5 / 6 / 10 / JBOD
Configure RAID using LaCie RAID Manager software
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
System monitoring and email alerts for failure or warning events
Standby: Negligible
Idle: 25-28 dBA
Operating: 25-29 dBA▲▲
100-240 V; 50/60 Hz; 150 W
173 x 220 x 196 mm | 6.8 x 8.6 x 7.7 in.
7.6 kg | 16.8 lbs
  • Computer with a Thunderbolt 2 or Thunderbolt*** port
  • Latest version of Windows® 7, Windows 8 (see here for drivers information) / Mac OS® X 10.9 or later
  • Minimum free disk space: 600MB recommended
  • Intego® Backup Manager Pro for Mac®
  • Genie® Backup Manager Pro for PC
  • LaCie RAID Manager (administration console)
Download product software here
  • LaCie 5big Thunderbolt 2
  • External power supply
  • Thunderbolt cable
  • Drawer key
  • Cable lock clip
  • Quick Install Guide
* Hot swapping will result in data loss in a RAID 0 array.
** These transfer rates were achieved using AJA System Test when connected to a Mac computer via the Thunderbolt 2 interface. Actual data rates may vary depending on operating environment and other factors, such as RAID mode, RAID configuration, and disk capacity.
*** To achieve full interface bandwidth, connect the product to a Thunderbolt 2 port on a computer or device.
▲▲ These measurements have been made under normal conditions, one meter/three feet from the front of the product. This value may vary with conditions and product configuration.
When referring to drive capacity, one gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one thousand billion bytes. Your computer’s operating system may use a different standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions and will not be available for data storage.

Model Number:

Pelican Case for LaCie 5big/4big

Made from HPX® high-performance resin, the injection-molded Pelican Storm Case series is virtually unbreakable and resistant to dents, shatter, and subzero temperatures. The interior foam is custom cut to precisely fit the LaCie 4big, 5big, 6big or 12big plus cabling, as well as three LaCie Rugged® portable drives.

Data sheet

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LaCie 4big/5big Spare Drive 3TB

Use the LaCie 4big/5big Spare Drive for LaCie 4- and 5-drive DAS products to replace a failed drive, or to have on hand in case of future drive failure.

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LaCie 4big/5big Spare Drive 5TB

Use the LaCie 4big/5big Spare Drive for LaCie 4- and 5-drive DAS products to replace a failed drive, or to have on hand in case of future drive failure.

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