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What is the maximum number of disk drive failures against which data is protected by the configuration?
When using the erasure coding technique in an object-based storage system, data is divided into 12 data segments and 4 coding segments.
What is the maximum number of disk drive failures against which data is protected by the configuration?
A . 3
B . 4
C . 8
D . 12
Answer: A
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is correct…. the answer is B.
If up to k of the n disks fail, their contents can be recomputed from the surviving disks.
Saas, you are Rigth!
If up to k of the n disks fail, their contents can be recomputed from the surviving disks.
In a typical erasure coded storage system, a set of n disks is divided into m disks to hold data and k disks to hold coding information, where n, m, and k are integers. The coding information is calculated from the data. If up to k of the n disks fail, their contents can be recomputed from the surviving disks.
In this example k=4, so the correct answer is B.