Erasure Code Redundancy Technology Used in Huawei OceanStor 9000 Supports

Multiple Choice

Erasure code redundancy technology used in Huawei OceanStor 9000 supports higher reliability and more flexible redundancy than traditional RAID algorithms. Which of the following statements regarding the principle of Erasure code N + M is wong?

A) Data is written into N data blocks of the same size
B) Yu calculate M check blocks (N=+M) by Erasure code algorithm for every N consecutive data blocks
C) The system stores N + M data blocks in parallel on different hard disks
D) In re-Erasure Code storage mode, the system supports up to N hard disk failure