Seagate
Seagate Cheetah NS ST3400755SSProduct 400 GB 3.5" SAS internal hard drive
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$23.99
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LaCie
LaCie 2big Dock STLG40000400 40TB external hard drive
40 TB desktop RAID drive with dual Thunderbolt 3 ports, CFexpress B, CFast 2.0 and SD card slots plus a DisplayPort 1.4 output
- ColorBlack
- Thunderbolt 3Yes
- InterfaceUSB 3.2 Gen 2
- Capacity40TB
- RAIDRAID 0/1
- FeaturesFeatures up to 40TB of capacity and speeds of up to 550MB/s
- 40 TB capacity stores massive creative libraries
- up to 550 MB/s transfer speeds accelerate large-file workflows
- dual Thunderbolt 3 ports daisy-chain up to 5 devices
- CFexpress B, CFast 2.0 and SD card slots ingest footage directly
- DisplayPort 1.4 drives two 4 K monitors or one 8 K display
LaCie 2big Dock 40TB
The LaCie 2big Dock STLG40000400 is a desktop external hard drive with 40TB of total capacity and RAID 0/1 support. It reaches speeds up to 550MB/s and includes CFexpress B, CFast 2.0 and SD card slots plus a USB 3.2 Type A hub port and DisplayPort 1.4. Dual Thunderbolt 3 ports allow daisy chaining up to five devices. It suits creative professionals who need high-capacity storage and multi-device connectivity in one unit.
Upgrade from single-drive storage
This dock replaces standalone drives or smaller RAID enclosures that lack integrated card readers and video outputs. The jump is worth it when you need simultaneous ingest from CFexpress B, CFast 2.0 or SD media while driving up to two 4K monitors or one 8K monitor over DisplayPort 1.4. It is not for users who only need basic file backup without media-card workflows or multi-display requirements.
Desktop setup with hot-swappable drives
The unit ships with a USB-C cable, external power supply and quick install guide. Hot-swappable IronWolf Pro enterprise-class drives let you replace a failed module without tools or downtime. RAID configuration is managed through the included software. Common issues include forgetting to initialise the array before first use and connecting the dock to a host port that does not supply enough power for all peripherals.
Highlights
- 40 TB capacity stores massive creative libraries
- up to 550 MB/s transfer speeds accelerate large-file workflows
- dual Thunderbolt 3 ports daisy-chain up to 5 devices
- CFexpress B, CFast 2.0 and SD card slots ingest footage directly
- DisplayPort 1.4 drives two 4 K monitors or one 8 K display
Specifications
| Brand | LaCie |
|---|---|
| Series | 2big Dock |
| Model | STLG40000400 |
| Color | Black |
| Thunderbolt 3 | Yes |
| Interface | USB 3.2 Gen 2 |
| Capacity | 40TB |
| RAID | RAID 0/1 |
| Features | Features up to 40TB of capacity and speeds of up to 550MB/s Stay connected with CFexpress B, CFast 2.0, and SD card slots, a USB 3.2 Type A hub port, and a DisplayPort 1.4 Dual Thunderbolt 3 ports daisy chain up to 5 devices Easily configure RAID 0/1 optimal system performance and data redundancy Works with Windows, iPad USB-C, and Mac Connect or charge USB devices with the front USB 3.2 Gen 2 Type A hub port Thunderbolt and DisplayPort 1.4 allow you to connect two 4k monitors or one 8k monitor Equipped with hot-swappable IronWolf Pro enterprise-class drives for ultimate reliability |
| System Requirements | Interface: Thunderbolt 3 + USB 3.1 (THUNDERBOLT 3 + USB 3.1) Works With USB-C host: USB4, USB 3.0, Thunderbolt 4, Thunderbolt 3 Compatible with most Windows, macOS systems, and iPad USB-C. Visit lacie.com/os for details1 2 1 Reformatting may be required for use with Time Machine. 2 Compatibility may vary depending on user's hardware configuration and operating system. |
| Dimensions | 3.67" x 4.65" x 8.54" |
| Weight | 8.51 lbs. |
| Package Contents | LaCie 2Big Dock Thunderbolt 3 USB-C cable External power supply Quick Install Guide ADOBE CC SRS60 TOOLKIT3 Rescue Data Recovery Services4 3 One-month membership to Adobe Creative Cloud All Apps plan is redeemable during product registration. Must redeem within one year of drive registration. Not available in China. Internet connection and Adobe ID required. Available only to users 13 and older. 4 Not available in all countries. |
| Shipping weight | 4.08 kg |
| Package size | 279 × 229 × 178 mm |
Questions about this item
How much desk space does the 3.67 by 4.65 by 8.54 inch enclosure need?
The unit measures 3.67 inches wide, 4.65 inches deep and 8.54 inches tall, so allow at least that footprint plus cable clearance behind it.
Which drive bays are hot-swappable and how do I change RAID mode without losing data?
Both IronWolf Pro bays are hot-swappable; use the rear switch or LaCie Toolkit to migrate between RAID 0 and RAID 1 while the dock stays powered.
When should the two IronWolf Pro drives be replaced under heavy workloads?
Enterprise-class IronWolf Pro drives are rated for high annual workloads; plan replacement after five years or when SMART alerts indicate wear.
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