Question: Consider the following data and parity-block arrangement on four disks: The B i?s represent data blocks; the P i?s represent parity blocks. Parity block P

Consider the following data and parity-block arrangement on four disks: The B_i?s represent data blocks; the P_i?s represent parity blocks. Parity block P_i is the parity block for data blocks B_4i?3?to B_4i. What, if any, problem might this arrangement present?

Disk 4 Disk 3 B6 B9 |Disk 1| Disk 2 B1 P1

Disk 4 Disk 3 B6 B9 |Disk 1| Disk 2 B1 P1 Bs B4 B7 1 B2 B5 P2 ...

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