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The data is distributed across a single row. For simplification, not all packs are shown in Figure 4-47. 

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Figure 4-48 on page 198 shows a single drive failure in the distributed RAID 6 (DRAID 6) environment. Physical disk 3 failed and the RAID 6 algorithm is using the spare capacity for a single spare drive in each pack for rebuild (which is marked in green). All disk drives are involved in the rebuild process, which significantly reduces the rebuild time. 

