It depends on the computer system you will use. See the below suggestions:
1. Use NTFS format for Windows 2000/XP/Vista/Windows 7 system;
2. Use HFS+ (Mac OS Extended) format for a Mac OS X system;
3. Choose exFAT format if you’ll use the Stardom product in both Windows and Mac environments, and you also could choose FAT32 format (the maximum size of one single file may not exceed 4 GB).