Asus PCI-DA2100 User Manual - Page 401

ASUS GUI RAID Manager: RAID Levels would create a single logical drive with a total disk capacity of 4GB. Disk spanning is considered non-RAID due to the fact that it neither provides redundancy nor improves performance. Disk spanning is inexpensive, flexible, and easy to implement; however, it does not improve the performance of the drives and any disk failure could result to total data loss. 2 GB Hard drive + 3 GB Hard drive + 1 GB Hard drive + 2 GB Hard drive = Logical Drive 2 + 3 + 1 + 2 = 8 GB Logical Drive RAID 0 RAID 0 implements block striping where data is broken into logical blocks and striped across several drives. Although called RAID 0, this is not a true implementation of RAID because there is no facility for redundancy. In the event of a disk failure, data is lost. In block striping, the total disk capacity is equivalent to the sum of the capacities of all SCSI drives in the combination. This combination of drives appears to the system as a single logical drive. RAID 0 provides the highest performance without redundancy. It is fast because data can be simultaneously transferred to/from C-2 RAID 0