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Seagate STFC10000400 10TB Professional 5-Bay Raid Storage



  • Up to 1050MB/s1 speeds for 4K video editing
  • Hardware RAID 5/6 with hot swap
  • Dual Thunderbolt 2 ports for daisy chaining
  • Aluminum enclosure and whisper-quiet fan


Thunderbolt 2 Power for Professional 4K 

For 4K and other bandwidth-hungry workflows, the LaCie 5big is the perfect solution. Thunderbolt 2 interface speeds, up to 40TB of capacity, and secure hardware RAID 5/6 bring the ideal combination of features for creative professionals. Additionally, the LaCie 5big features dual Thunderbolt 2 ports for daisy chaining and an effective cooling system for quiet operation and long-term reliability. A version with 40TB of enterprise-class drives provides the ultimate accessibility, reliability, and robust performance and a five-year limited warranty. 

Use ases  

  • Digital Content Creation
    •  Thunderbolt 2 bandwidth lets creative pros shave time off their workflows. Post-production pros can work directly from RAW files in Apple Final Cut Pro or Adobe Premiere, getting full quality from footage and seeing edits in real time. Photographers will notice highly responsive browsing, even in archived libraries of thousands of RAW and edited images. And audio pros using Avid Pro Tools and other software will notice much smoother audio mixing.
  • Backup
    • The combination of hardware RAID 5/6 and the Thunderbolt 2 I/O means incredibly fast backups while providing excellent speed and capacity. And hot-swappable disks and efficient cooling help ensure bulletproof data security.
  • Desktop Storage
    • Speed, capacity of up to 40TB, and reliability make the LaCie 5big a perfect solution for storing both current and archived projects. These features also ensure there is no better way to expand capacity for the new Mac Pro.




Internal Storage Media

5 x hot-swappable* 7200 RPM/64MB cache (or greater) hard disks

5 x hot-swappable* 7200 RPM/256MB cache hard disks with 2 million hours MTBF and 24x7 power-on operation


2 x Thunderbolt™ 2

Interface Transfer Rate

20 Gb/s

Performance Benchmark

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

Thunderbolt 2 Technology

Bidirectional 20 Gb/s permits a high-resolution display and RAW 4K video editing

Power-Saving Mode

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)

RAID Modes

Preconfigured HFS+ RAID 5

Hardware RAID 0 / 1 / 5 / 6 / 10 / JBOD

Configure RAID using LaCie RAID Manager software

Daisy Chain

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 encryption²

Kensington lock compatible

Cable lock


Aluminum enclosure with improved internal heat dissipation Thermoregulated Noctua cooling fan: effective and whisper-quiet cooling

Additional Features

System monitoring and email alerts for failure or warning events


Standby: Negligible

Idle: 25-28 dBA

Operating: 25-29 dBA²²

Power Supply

100-240 V; 50/60 Hz; 150 W

Dimensions (W x H x D)

173 x 220 x 196 mm | 6.8 x 8.6 x 7.7 in.


7.6 kg | 16.8 lbs

System Requirements

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 Private-Public²(protect data with AES 256-bit encryption)

LaCie RAID Manager (administration console)

Box Content

LaCie 5big Thunderbolt 2

External power supply

Thunderbolt cable

Drawer key

Cable lock clip

Quick Install Guide

No additional files, specification sheets, guides or documentation found for product.

Warranty: 36 Month Manufacturers Pickup & Return

Full manufacturers warranty details are available at the manufacturers (Seagate) web site.

Unless otherwise specified Techbuy is normally your first point of contact for warranty related returns, further information regarding our warranty policies and consumer guarantees is available on our policies and service & support pages.

To apply for return of a product just go to our returns page.

These terms are in addition to and do not affect any terms, conditions, guarantees and warranties implied by law.

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