Huawei Certified ICT Associate – Storage (HCIA-Storage) — Question 21

Which of the following statements are characteristics of pre-copy technology? (Choose all that apply.)

Answer options

• A. Improves system reliability.
• B. Reduces system performance.
• C. Migrates data from a suspected faulty disk to a hot spare disk immediately after the error count of the suspected faulty disk exceeds the preset threshold.
• D. Reduces the occurrence of reconstruction.

Correct answer: A, C, D

Explanation

Answer A is correct as pre-copy technology does enhance system reliability by ensuring data is migrated before failure. Option C is also correct because it describes the immediate action taken when a faulty disk is detected. Option D is right as it highlights the reduction in reconstruction occurrences due to proactive data migration. However, option B is incorrect because pre-copy technology generally aims to maintain or improve system performance, not reduce it.