The LED turns on only if a compatible disk has been installed. For compatibility information, refer to Install Disks.

This could indicate disk failure. If the disk was purchased from LaCie, log in to LaCie technical support and create a support ticket for warranty service.

When copying files or folders from a computer to a FAT 32 volume, certain characters cannot be copied. These characters include, but are not limited to:

? < > / \ :

Since it does not offer optimal performance, LaCie does not recommend using the FAT 32 file system with your product. Additionally, Time Machine is only compatible with disks formatted in HFS+ or HFS+ (Journaled). Reformat the drive for Time Machine compatibility.

Simply ignore this message. The drive will remount to the desktop. LaCie drives conserve power by spinning down when you set your computer to sleep mode, and when the computer is awoken from sleep, it may not give the drive enough time to spin-up from its sleep mode.

Disk space will not be reclaimed until the file is completely erased. To remove the files forever, empty your trash.

After formatting, the available capacity of a drive will show less than advertised on the box. The difference is based upon how capacity is viewed by the operating system. For example, a hard drive that can store 500,000,000,000 bytes is divided by 1,000,000,000 to equal 500GB. This is the actual capacity listed on the manufacturer’s box. The operating system uses slightly different math, dividing 500,000,000,000 by 1,073,741,824 to equal 466GB.

Disconnect any other Thunderbolt devices and see if the Thunderbolt Series volume appears on the desktop.

The drive icon(s) for the Thunderbolt Series storage should appear on your desktop, as long as the disks are compatible, are installed correctly, and have been formatted in HFS+ for use with a Mac computer. Please also confirm that the Finder preference for displaying external disks on the desktop is selected at Finder > Preferences > General.

The connection type for Thunderbolt technology on the Mac is the Mini DisplayPort. While earlier Macintosh computers include one or more Mini DisplayPorts, they are only used to connect one or more monitors. Please note that legacy Mac computers with Mini DisplayPorts do not support Thunderbolt technology peripherals such as the LaCie Thunderbolt Series storage.

A:

• Review the installation steps (Get Connected).
• Make sure that the power supply is connected to a functioning power outlet or power strip, and that the power button on the LaCie 5big and the power strip (if applicable) is turned on.
• Check both ends of the Thunderbolt cable to make sure they are fully seated in their respective ports.
• Try disconnecting the cable then wait 10 seconds before reconnecting it.
• If the product is still not recognized, restart your computer and try again.

The Thunderbolt Series storage requires cables specifically constructed for Thunderbolt technology. Go to www.lacie.com for more information on cables that support Thunderbolt technology.

The Thunderbolt Series enclosure is not bus-powered through the Thunderbolt cable. You must connect the included power supply. See Get Connected.

If your RAID array was protected, the disk failure did not result in data loss. Follow these steps:

1. Purchase a LaCie 5big Spare Drive|new disk from LaCie or a compatible third-party disk.
2. Install the disk. Refer to Install Disks for details.
3. Rebuild the RAID array. Refer to this article from Apple for instructions.

If your RAID array was not protected, the disk failure resulted data loss. Replace the disk as described in Install Disks.