Solution:

1. You have to order RAID-500U2-8 or RAID-500U2-R8 (Redundant controller) for supporting 8 SCSI channels. 2. Configure SCSI channel 0~3 as host channels. 3. Connect 8 hard disks to channel 4 and channel 5. (One SCSI channel is for four hard disks) 4. Use 8 hard disks to create a RAID 5 logical drive. 5. Slice this logical drive to four partitions. 6. Map these partitions to different host computer running various operating systems. Note: This is a multiple hosts application not redundant host.