Get Started

Download and install RAID Manager to manage supported RAID devices. For device-specific setup — such as how to connect your drive, supported operating systems, and drive formatting — refer to the user manual for your product.

Requirements

Professional storage

LaCie 8big Pro5

Supported operating systems

macOS: macOS 15 (Sequoia) or later.
Windows: Windows 11 24H2 or later.

For the latest compatibility details, see LaCie 8big Pro5 Compatibility.

Install RAID Manager

Go to www.seagate.com/raid-manager.
Download the installer for your operating system.
Launch the installer and follow the onscreen prompts to complete installation.
When installation is complete, open RAID Manager.

See the user manual for your product for instructions on connecting your drive and details regarding drive formats.

Device	Factory configuration	User manual
LaCie 8big Pro5	RAID 5	Click here

macOS — RAID Manager installs a driver to allow for device detection. If you are experiencing detection issues, check that the LaCie driver extension (DEXT) is enabled. To enable the driver:

Open System Settings.
Select General, then navigate to Login Items & Extensions.
Under Extensions, locate LaCie Driver Installer.
Click the Info icon and enable the LaCie driver.
Enter administrator credentials when prompted.
Restart the computer if required.

Once the driver extension is enabled in macOS, your device should be recognised as a storage device.

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