Dell 6 series User Manual page 20

Figure 2-3. Example of Distributed Parity (RAID 5)
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Stripe element 25 Parity (21–25)
Parity (26–30) Stripe element 26
NOTE:
Parity is distributed across multiple physical disks in the disk group.
Figure 2-4. Example of Dual Distributed Parity (RAID 6)
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Parity (9–12) Parity (9–12)
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NOTE:
Parity is distributed across all drives in the array.
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Overview
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Stripe element 15 Parity (11–15)
Parity (16–20) Stripe element 16
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Parity (5–8) Parity (5–8)
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Parity (13–16) Parity (13–16)
Stripe element 5 Parity (1–5)
Parity (6–10) Stripe element 6
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Stripe element 30
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Parity (1–4) Parity (1–4)
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