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Dell PowerEdge H730P - Page 99

Dell PowerEdge H730P
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The parity data is distributed across all the physical disks in the system. If a single physical disk fails, it can
be rebuilt from the parity and the data on the remaining physical disks. RAID level 5 combines distributed
parity with disk striping. Parity provides redundancy for one physical disk failure without duplicating the
contents of the entire physical disks.
RAID 6 combines dual distributed parity with disk striping. This level of parity allows for two disk failures
without duplicating the contents of entire physical disks.
Figure 8. Example of Distributed Parity (RAID 5)
NOTE: Parity is distributed across multiple physical disks in the disk group.
Figure 9. Example of Dual Distributed Parity (RAID 6)
NOTE: Parity is distributed across all disks in the array.
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