VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

In a Virtual SAN with no Storage Policies defined, what happens if one cluster node is lost?

1. Data availability will be affected.

2. Data availability will not be affected.

3. All virtual machines will become non-operational.

4. Only some virtual machines will be affected.

The correct answer is: Data availability will not be affected.

In a Virtual SAN (vSAN) environment, the system is designed with high availability and resilience in mind. When no storage policies are defined, vSAN operates under the default storage policy settings. This means that the data is typically stored in a way that allows for fault tolerance, ensuring that the loss of a single cluster node does not lead to data unavailability. The default behavior of vSAN is to maintain a replica of data across different nodes within the cluster. If one node goes offline, the replicated instances of the virtual machines stored on other nodes continue to maintain access to the data. This mechanism significantly enhances the overall resilience of the system. In scenarios where storage policies are not explicitly defined, vSAN still retains its fault tolerance capabilities, which ensures that virtual machines can continue to operate normally even when a single node is lost. This architecture helps to provide a seamless experience, allowing users and applications to function without interruption. Understanding the way vSAN manages data replication and availability is crucial for ensuring robust operations within a virtualized environment, particularly in production settings where uptime is critical.