LaCie this week has taken the wraps off of the latest member of their family of DAS devices, the 2big Dock. The newly revealed dock is their first Thunderbolt 3/USB-C-enabled dock, offering the latest in connectivity for laptops and PCs. Operating as both a DAS and a TB3/USB-C hub, the 2big Dock integrates two high-performance hard drives while offering a card reader, a USB 3.0 Type-A port, and a DisplayPort (1.2). The 2big Dock offers up to 20 TB capacity with a sequential read/write speed of up to 440 MB/s.

Like their prior Thunderbolt 2 docks, LaCie is aiming to fully leverage the capabilities and intended use cases for Thunderbolt-equipped laptops. As discussed multiple times, modern high-end laptops are so thin that it in many cases it is physically impossible (or very complicated) to install full-sized USB Type-A or DisplayPort headers on them and sometimes there is no space for memory card readers in the chassis (this is the case with Apple’s MacBook and MacBook Pro, HP’s Spectre and some other), which means that many people need docking stations to fulfill their connectivity needs.

LaCie is a well-known name in the DAS business, however prior to now they've never done anything approaching a dock. So as you'd expect for a company whose core strength is in the storage business, the company has opted to build an entry-level DAS that also doubles as a Thunderbolt 3 dock. All-told, the 2big Dock offers card reader supporting SD and CompactFlash cards, a DisplayPort, a USB 3.0 Type-A port, and a USB 3.0 Type-C port with power delivery, while allowing the Dock to be used with both Thunderbolt 3 and pure USB-C host devices.

LaCie is going to offer three versions of the 2big Dock DAS: with 12 TB, 16 TB and 20 TB capacities, all based on the Seagate IronWolf Pro enterprise-class drives for NAS. The DAS fully supports RAID 1 and RAID 0 capabilities for two HDDs — so owners can ensure either maximum reliability for their data (by mirroring them), or double their sequential read/write speeds up to ~440 MB/s (by striping them). LaCie does not disclose the exact controller it uses to enable hardware RAID functionality, but it is logical to assume that it is the ASMedia ASM1092R chip, which has two device ports and one host SATA port (and which was used in the previous-gen 2big DAS). As for controllers for the docking station, the manufacturer also remains tight-lipped and we do not know what kind of bridges are used for PCIe and SATA bridging, PCIe and USB bridging, or the card reader.

The LaCie 2big Dock with Thunderbolt 3 and USB-C
 12 TB
16 TB
20 TB
Number of Bays2 hot-swappable bays for 3.5" HDDs
HDD InterfaceSATA 6 Gbps
HDDs UsedSeagate IronWolf Pro
CapacityRAID 0: 12 TB
RAID 1: 6 TB
RAID 0: 16 TB
RAID 1: 8 TB
RAID 0: 20 TB
RAID 1: 10 TB
RAID0~440 MB/s
RAID1214 MB/s
RAID ControllerASMedia ASM1092R (?)
Ports2 × Thunderbolt 3
 1 × USB 3.0 Type-A
1 × USB 3.0 Type-C
1 × DisplayPort (version unknown)
1 × SD card reader
1 × CF card reader
Cables IncludedThunderbolt 3 40Gb/s USB-C to USB-C cable
USB-A to USB-C (5 Gbps) cable
SoftwareLaCie RAID Manager
Price (MSRP)unknownunknownunknown

Just like many other Thunderbolt 3 devices, the 2big Dock has two TB3 headers in a bid to daisy chain other TB3 devices, such as displays or special-purpose hardware. The 2big Dock DAS is also compatible with the previous-gen computers featuring Thunderbolt 2 ports (e.g., Apple’s Mac Pro and MacBook Pro) via a special adapter from Apple.

The LaCie 2big Dock will be available this summer and will be covered by the company’s five-year warranty. Pricing is not announced, but since we are talking about a dual-bay DAS, it is not going to be astronomical. At least, expect the 20 TB version to be considerably more affordable than the 6big 24 TB ($3000).

Gallery: LaCie 2big Dock

Related Reading:

  • LaCie Launches Rugged and d2 Thunderbolt 3 Storage Devices
  • LaCie Announces Bolt3: 2 TB External SSD at 2.8 GBps over Thunderbolt 3
  • LaCie Launches 6big and 12big: Up to 60/120 TB External Storage with Thunderbolt 3
  • HighPoint RocketStor 6618 Thunderbolt 3 DAS: 8-Bays, Up to 96 TB, 2.7 GB/s, $999
  • QNAP at CES 2017 – Thunderbolt 3 and Xeon D NAS Units, Residential Gateways, and More
  • Promise Launches Pegasus3 External Storage via TB3: Up to 48 TB, 1.6 GBps

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