Adaptec 2410SA User Guide - Page 139
Raid 0, Raid 1
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Supported RAID Types RAID 0 A RAID 0 is created by striping data across two or more disk drives. This striping scheme creates no redundancy to protect the data. However, because the drives share load equally, RAID 0 provides the best read and write performance of any RAID type. An example of a RAID 0 array is shown below. RAID 0 RAID 1 Drive Data 0 Data 2 Data 4 Data 6 Drive Data 1 Data 3 Data 5 Data 7 Drive Data 0 Data 1 Data 2 Data 3 Drive Data 0 Data 1 Data 2 Data 3 RAID 1 A RAID 1 array is created by copying, or mirroring, all data from one drive onto a second drive. This mirroring provides redundancy, ensuring that if one drive fails no data is lost. Redundancy also means that only half of the total capacity is available. RAID 1 offers no write performance advantage over a simple volume configuration. However, because the drives share read load equally, RAID 1 provides improved read performance. An example of a RAID 1 array is shown above. D-2