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RAID 10 (or sometimes called RAID 1+0) uses a minimum of four disk drives to create a RAID 0 array from two RAID 1 arrays, as shown in Figure 8.15. It uses mirroring and striping to form a stripe of mirrored subsets. This means that the array combines—or stripes—multiple disk drives, creating a single logical volume (RAID 0). RAID 10 combines the high performance of RAID 0 and the high fault tolerance of RAID 1. Striping disk drives improves database write performance over a single disk drive for large databases. The disks are also mirrored (RAID 1), so that each disk in the logical volume is fully redundant.
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When evaluating a fault on the Infoblox-4010, it is best to think of the disk subsystem as a single, integrated unit with four components, rather than four independent disk drives. For information, see Evaluating the Status of the Disk Subsystem.
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