Dell Precision T7400 User's Guide - Page 43
RAID Level 10, the data that is written to the RAID configuration is striped across all four
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RAID Level 10 NOTE: RAID levels 5 and 10 are only available via an optional PCI Express RAID controller card. RAID level 10 uses a combination of striping and mirroring methods. It requires four drives. The drives are broken up into mirroring pairs and then the data that is written to the RAID configuration is striped across all four drives. Data can be accessed quickly, due to the striping of data, however each piece of data is duplicated on another drive, for redundancy purposes. SATA RAID configured for RAID level 10 segment 1 segment 2 segment 3 segment 4 segment 5 segment 6 hard drive 1 segment 1 striped across 4 drives segment 2 striped across 4 drives segment 3 striped across 4 drives segment 4 striped across 4 drives segment 5 striped across 4 drives segment 6 striped across 4 drives hard drives 2, 3, and 4 If a drive failure occurs, subsequent read and write operations are directed to the other surviving drives. A replacement drive can then be rebuilt using the data from the surviving drives. Also, because data is duplicated on the primary and additional drives, four 120-GB RAID level 1 drives collectively have a maximum of 240-GB on which to store data. Advanced Features 43