LaCie RAID Manager User Manual 
LaCie RAID Manager User Manual 

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Frequently Asked Questions

RAID initialization and other operations

Can I disconnect my computer during RAID synchronization or initialization?

Yes. Synchronization and initialization continue uninterrupted when the computer disconnects from the LaCie device. Similarly, your LaCie device can be placed into low power mode or powered off during synchronization and initialization. Provided the same hard drives are in the enclosure, the operation continues once the device is powered on.

With higher capacity storage, initialization can take many days and, in some cases, well over a week. This is especially true of background initializations. You can check Device settings in LaCie RAID Manager to see if the processing for initialization has been moved to Low. Reducing the processing allotted to initialization can slow down initialization while helping to improve performance. To speed up initialization, move the slider to High. The device’s performance can be negatively affected when the slider is set to High.

Can I perform more than one operation at a time, for example, run a disk check while an initialization is in progress?

Only one operation can be performed at a time. Therefore, you can run an initialization and then a disk check but not at the same time. The same is true for a consistency check and an array upgrade.

Thunderbolt 2 and Windows PCs

Do I need a special driver for Thunderbolt devices?

You must have the most recent Thunderbolt 2 driver and firmware to use LaCie 5big Thunderbolt 2 and LaCie 8big Thunderbolt 2 with a Windows PC. LaCie RAID Manager installs a driver for Thunderbolt but we cannot update your computer’s firmware.

LaCie 6big Thunderbolt 3 / 12big Thunderbolt 3 and USB connections

All my arrays are visible in LaCie RAID Manager. Why can’t I see them on my computer?

While LaCie RAID Manager sees all arrays associated with the device, USB connections to LaCie 6big/LaCie 12big allow for one array on your computer. Create a single array from all the hard drives if you connect to LaCie 6big/LaCie 12big via USB. To use multiple arrays, connect to LaCie 6big/LaCie 12big via Thunderbolt 3.


LaCie 12big Thunderbolt 3 using consecutive disks

Can I create multiple arrays on LaCie 12big Thunderbolt 3 using consecutive disks?

When creating multiple arrays, please do not use consecutive disks in the same array. Performance for an array that has consecutive disks can be negatively affected. For example, do not create an array with disks 1, 2, 3 and 4. Instead, create an array with disks 1, 3, 5 and 7. You can use disks 2, 4, 6, 8 and 10 for the next array. This recommendation is limited to LaCie 12big Thunderbolt 3 and should not be used with other products compatible with LaCie RAID Manager.