Formang and Paroning
Your LaCie 6big/LaCie 12big is shipped as unformatted. When first connecting the device to a computer,
you are prompted to format the default RAID 5 array. Before formatting the array, review the chapter on
RAID to learn which RAID level is best for your working environment. If you want to change the RAID level or
create multiple arrays, see the instructions in the LaCie RAID Manager user manual.
When formatting the array, consider the operating system on your computer. If you intend to use LaCie
6big/LaCie 12big with Mac computers, format the array as Mac OS Extended (HFS+). If you use the device
exclusively on Windows, format the array as NTFS. See the details below for more information about
system formats.
About file system formats
NTFS: since it is the native file system for Windows, volumes created in NTFS are read and write with
computers running Windows. Mac OS can read NTFS volumes but cannot natively write to them.
Mac OS Extended (HFS+): the native hard drive file system for Mac. Windows cannot natively read or write
to HFS+ (journaled) hard drives.
exFAT: generally compatible with Mac and Windows. exFAT is not a journaled file system which means it can
be more susceptible to data corruption when errors occur or the drive is not disconnected properly from
the computer.
FAT32: compatible with Mac and Windows. However, FAT32 is a legacy file system designed for low
capacity hard drives and it is not recommended for modern hard drives or operating systems. A FAT32
partition can reach up to 32GB when formatted on a Windows PC.
How to choose the file system format
Use NTFS if:
…the storage device is connected to Windows PCs.
Use HFS+ if:
…the storage device is connected to Macs.
You can use exFAT if:
…the storage device is shared between Mac and Windows computers.
Use FAT32 if:
…the storage device is connected to older Windows and Mac computers. FAT32 is not recommended for
modern operating systems and computers.
Formang instrucons
The steps below help you format and partition a storage device.