Huawei
H13-831_V2.0 · Question #2787
The object storage service OBS uses the distributed data fault-tolerant technology Erasurecode (EC) to ensure both high data reliability and data security. Which of the following descriptions of EC…
The correct answer is B. EC algorithm can greatly improve storage utilization compared to the 3-copy mechanism D. EC's M+N redundancy mode is a repackaging of RAID 5 technology. See the full explanation below for the reasoning.
Advanced Storage and Database Architecture Design
Question
The object storage service OBS uses the distributed data fault-tolerant technology Erasurecode (EC) to ensure both high data reliability and data security. Which of the following descriptions of EC technology are wrong? (Multiple choice)
Options
- AData will be redundantly sharded and stored in different servers. If the number of failures is less than
- BEC algorithm can greatly improve storage utilization compared to the 3-copy mechanism
- CEC is mainly used to improve utilization. When a hard drive fails, the data reconstruction speed is
- DEC's M+N redundancy mode is a repackaging of RAID 5 technology.
How the community answered
(38 responses)- A8% (3)
- B79% (30)
- C13% (5)
Topics
#OBS#Erasure Code#data redundancy#storage reliability
Community Discussion
No community discussion yet for this question.