To study for VMware HCI Master Specialist Exam | vSAN认证考试题目学习
92. An administrator wants to put the witness host in a 2-node vSAN configuration in maintenance mode. What should be verified before putting the witness host in maintenance mode?
- A.No data migration has been set as an option.
- B.Ensure accessibility has been enabled
- C.All virtual machines are in compliance
- D.The storage policy is set to FTT=1.
Explaination:
See https://core.vmware.com/resource/vsan-2-node-cluster-guide#sec7440-sub1
Maintenance Mode on the vSAN Witness Host
Maintenance mode on the vSAN Witness Host is typically an infrequent event. Different considerations should be taken into account, depending on the type of vSAN Witness Host used:
o vSAN Witness Appliance (recommended) – No virtual machine workloads may run here. The only purpose of this appliance is to provide quorum for the 2 Node vSAN Cluster. Maintenance mode should be brief, typically associated with updates and patching.
o Physical ESXi Host – While not typical, a physical host may be used as a vSAN Witness Host. This configuration will support virtual machine workloads. Keep in mind that a vSAN Witness Host may not be a member of any vSphere cluster, and as a result virtual machines will have to be manually moved to an alternate host for them to continue to be available.
When maintenance mode is performed on the witness host, the witness components cannot be moved to either site. When the witness host is put in maintenance mode, it behaves as the No data migration option would on site hosts. It is recommended to check that all virtual machines are in compliance and there is no ongoing failure, before doing maintenance on the witness host.
The correct answer is C. All virtual machines are in compliance.
This is because when the vSAN Witness Host is put into maintenance mode, the witness components cannot be moved to either site, mirroring the behavior of the No data migration option on site hosts. Therefore, it’s crucial to ensure that all virtual machines are in compliance and that there are no ongoing failures before proceeding with maintenance on the witness host. This step ensures that the cluster’s health and data integrity are maintained while the witness host is unavailable.
- 管理员想要将2节点vSAN配置中的见证主机置于维护模式。在将见证主机置于维护模式之前应该验证什么？
- A.没有设置数据迁移作为选项。
- B.确保已启用访问性
- C.所有虚拟机都符合要求
- D.存储策略设置为FTT=1。
解释：
参见 https://core.vmware.com/resource/vsan-2-node-cluster-guide#sec7440-sub1
vSAN见证主机的维护模式
vSAN见证主机的维护模式通常是不频繁的事件。根据使用的vSAN见证主机的类型，应该考虑不同的因素：
o vSAN见证设备（推荐）- 这里不得运行任何虚拟机工作负载。这个设备的唯一目的是为2节点vSAN集群提供仲裁。维护模式应该是短暂的，通常与更新和打补丁相关联。
o 物理ESXi主机 – 虽然不常见，但物理主机可以用作vSAN见证主机。这种配置将支持虚拟机工作负载。请记住，vSAN见证主机不得是任何vSphere集群的成员，因此，虚拟机必须手动移动到另一个主机上，以便它们能够继续可用。
当在见证主机上执行维护模式时，见证组件不能移动到任一站点。当见证主机被置于维护模式时，它的行为就如同站点主机上的“无数据迁移”选项一样。建议在对见证主机进行维护之前检查所有虚拟机是否符合要求，且没有正在进行的故障。
正确答案是C. 所有虚拟机都符合要求。
这是因为当vSAN见证主机被置于维护模式时，见证组件不能移动到任一站点，这与站点主机上的“无数据迁移”选项的行为相同。因此，在对见证主机进行维护之前，确保所有虚拟机都符合要求并且没有正在进行的故障是至关重要的。这一步骤确保了在见证主机不可用时，集群的健康和数据完整性得到维护。
