LaCie Little Big Disk Thunderbolt Series 240GB SSD review

LaCie ramps up the performance stakes with a combined Thunderbolt and external SSD offering

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  • Speedy portable storage
  • Small, strong metal enclosure


  • Requires external power supply
  • Whine from long, intense use

The Thunderbolt version of LaCie's Little Big Disk comes in three varieties. Two of them contain hard disks, but this one packs solid-state drives. There are two inside, pre-configured as a striped RAID array for a total capacity of 240GB.

Although that pales in comparison to the less costly hard disk models, the pairing of Thunderbolt with even faster storage is an exciting proposition. LaCie quotes read speeds up to 480MB/s, around 290MB/s faster than the hard disk versions, and write speeds up to 245MB/s, which, although less jaw-dropping, is still a respectable boost of 55MB/s.

Our tests revealed a pleasant surprise: LaCie's figures are too conservative. It achieved 502.7MB/s when reading such files, and 256.7MB/s when writing them. Speeds tailed off for small files under 1MB, but the low of 24.2MB/s is respectable for them.

However, the Little Big Disk is really aimed at apps that require the ability to sustain high speeds when handling large files such as high-spec video, and it shines at this.

The Little Big Disk boasts a second Thunderbolt port for daisy-chaining other devices. So, connecting it to a MacBook doesn't forfeit the ability to work more comfortably with a second display.

Thunderbolt can deliver 10W of power to a device, but the drive requires an external power supply. It adds roughly a third of the drive's volume again, which isn't much. It's more irritating to carry another bulky three-pronged UK plug.

The drive's metal body is sturdy. It weighs 650g, or just under half a 13-inch MacBook Air. The ridged sides are intended to dissipate heat, but it was only lukewarm after copying 100GB to the drive. The fan, though, emitted a noticeable high pitch about halfway through.

Don't forget to add the £35 cost of Apple's Thunderbolt cable, which isn't bundled. But if you need and can afford this sort of performance when away from your desk, that isn't going to hold you back. Nor should it.

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Tech Specs

Product TypeDAS Array
Number of Total Expansion Bays2
Number of 3.5" BaysNo
Total Solid State Drive Capacity Installed240 GB
Number of Hard Drives Supported24
Number of Hard Drives InstalledNo
Number of Solid State Drive Supported2
Number of Solid State Drive Installed2
Number of 5.25" BaysNo
Number of 2.5" Bays2
Number of 2.5"/3.5" BaysNo
Drive InterfaceSerial ATA
Brand NameLaCie
Host InterfaceThunderbolt
Total Hard Drive Capacity Supported2 TB
Total Solid State Drive Capacity Supported240 GB
Height40 mm
Width85 mm
Depth140 mm
Product NameLittle Big Disk DAS Hard Drive/Solid State Drive Array
Product LineLittle Big Disk
Manufacturer Part Number9000243
Manufacturer Website Address
Marketing Information

The LaCie Little Big Disk Thunderbolt Series heralds a new era for storage performance. Featuring a preconfigured RAID0 striped set with optional hard disks or SSDs through the 10Gb/s Thunderbolt interface, it delivers astonishing transfer rates. Reach read speeds of up to 480MB/s with the SSD model, and up to 190MB/s with the hard disk model. Now you can truly get the power of fibre channel rackmount storage in a portable solution!

Weight (Approximate)650 g