5V0-21.21 Exam questions (50-59) vSAN考试题目 | To study for VMware HCI Master Specialist Exam | vSAN考试题目学习
54. An architect intends to use the Primary Level of Failures To Tolerate (PFTT) to calculate the minimum number of required hosts for a vSAN cluster.
Which calculation model should be used?
- A. 1 * PFTT + 1
- B. 2 * PFTT + 2
- C. 1 * PFTT + 2
- D. 2 * PFTT + 1
Explaination:
Based on the information from the VMware vSphere 7.0 documentation
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-57575456-0AD9-4655-9D6B-58509C1DF33C.html
The correct calculation model to determine the minimum number of required hosts for a vSAN cluster using the Primary Level of Failures To Tolerate (PFTT) is indeed:
D. 2 * PFTT + 1
This formula is specifically mentioned in the section “Sizing the vSAN Cluster for Failures to Tolerate” on the VMware documentation page. It indicates that the number of hosts required for the cluster is calculated as 2 * FTT + 1, where FTT stands for Failures to Tolerate.
54. 一位架构师打算使用容错级别的主要级别（PFTT）来计算vSAN集群所需的最少主机数量。
应使用哪种计算模型？
- A. 1 * PFTT + 1
- B. 2 * PFTT + 2
- C. 1 * PFTT + 2
- D. 2 * PFTT + 1
解释：
根据VMware vSphere 7.0文档的信息 https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-57575456-0AD9-4655-9D6B-58509C1DF33C.html 确实，使用容错级别的主要级别（PFTT）确定vSAN集群所需的最少主机数量的正确计算模型是：
D. 2 * PFTT + 1
这个公式在VMware文档页面的“计算vSAN集群的容错级别大小”一节中有特别提及。它表明，集群所需的主机数量是作为2 * FTT + 1计算的，其中FTT代表容错级别。
