5V0-21.21 Exam questions (70-79) vSAN考试题目

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71. An administrator has changed the Virtual Machine Storage Policy from RAID-5 to RAID-6.

How many failures can be tolerated when this change is made?

• A. 3
• B. 4
• C. 2
• D. 5

Explaination:

The change from RAID-5 to RAID-6 in a Virtual Machine Storage Policy impacts the number of disk failures that the system can tolerate without losing data.

• RAID-5: This configuration can tolerate the failure of one disk. It uses block-level striping with parity data distributed across all member disks.
• RAID-6: This configuration can tolerate the failure of two disks. It is similar to RAID-5 but with an additional parity block, allowing it to withstand the loss of two disks without data loss.

Given this information, when changing from RAID-5 to RAID-6, the system can tolerate:

C. 2 failures.

71. 管理员已将虚拟机存储策略从 RAID-5 更改为 RAID-6。

进行此更改时，系统可以容忍多少次故障？

• A. 3
• B. 4
• C. 2
• D. 5

解释：

在虚拟机存储策略中，从 RAID-5 更改为 RAID-6 会影响系统在不丢失数据的情况下可以容忍的磁盘故障次数。

RAID-5：此配置可以容忍一块磁盘的故障。它使用块级条带化，并将奇偶校验数据分布在所有成员磁盘上。

RAID-6：此配置可以容忍两块磁盘的故障。它与 RAID-5 类似，但增加了一个额外的奇偶校验块，使其能够在不丢失数据的情况下承受两块磁盘的损失。

根据这些信息，从 RAID-5 更改为 RAID-6 时，系统可以容忍：

C. 2次故障。