A storage system is configured with erasure coding, divided up into 12 data segments and 4 coding segments. Each segment is written to different drives. What is the maximum number of drive failures…

The correct answer is B. 4. 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…

Storage Systems

Question

A storage system is configured with erasure coding, divided up into 12 data segments and 4 coding segments. Each segment is written to different drives. What is the maximum number of drive failures that can be withstood without losing the data in this configuration?

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How the community answered

(22 responses)

A
14% (3)
B
73% (16)
C
9% (2)
D
5% (1)

Explanation

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.

Topics

#erasure coding#fault tolerance#coding segments#drive failure tolerance

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