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LaCie 2Big USB 3.0 review

LaCie 2Big USB 3.0
Our Rating :
Price when reviewed : £246
inc VAT

Solid performance over USB3 and the peace of mind provided by RAID1 support, but it's too expensive to recommend


1TB+1TB hard disk, USB3, 200x93x183mm

Two-disk external drives have one major benefit over single-bay units; they can be configured in RAID to protect your data from disk failure. LaCie’s 2Big USB 3.0 has a pair of 1TB 3½in hard disks for this very purpose.

You have the choice of using the maximum 2TB of storage, or sacrificing 1TB to ensure your data stays safe by mirroring the contents of both disks. A hardware switch enables each RAID mode: you have to disconnect the disk from your PC and reboot it after using the switch.

LaCie 2Big USB 3.0

LaCie includes a PCI Express card to add a USB3 port to any PC, although this doesn’t fully justify the steep price. Testing in RAID 1 mode, large files were written at 99.5MB/s and read at 144.4MB/s. Both scores are very impressive for an external disk, regardless of RAID mode. Small files were equally rapid, being written at 50.6MB/s and read at 66.2MB/s. Switching to RAID 0 increased both read and write speeds by around 10-15 per cent, but we wouldn’t recommend choosing it over RAID 1 because of the higher risk of losing all your data if a disk fails.

Unfortunately for LaCie, we don’t recommend you buy the 2Big at all as it’s very expensive for the capacity. If data security is more important to you than performance, buy the Synology DiskStation DS211j NAS (around £160) and two 1TB hard disks (£40 each). This will give also you all the benefits of a NAS as well.

Basic Specifications

Rating ***


Hard disk Hitachi HDT72100SLA360
Capacity 1TB+1TB
Formatted capacity 1.81TB
Price per gigabyte £0.12
Disk size 3.5in
Interface USB3
Power connector External
Spindle speed 7,200rpm
Cache 32MB
Seek time 8.0ms
Weight 3.6kg
Size 200x93x183mm
Power consumption idle 13W
Power consumption active 15W

Buying Information

Backup software included LaCie Genie Backup Assistant
Price £246
Warranty three years RTB

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