What does the default storage policy in a vSAN environment ensure for each virtual disk?

In a VMware vSAN environment, the default storage policy specifies certain configurations for virtual disks to ensure high availability and redundancy. Specifically, the correct choice indicates that each virtual disk is mirrored for redundancy. This means that data written to a virtual disk is duplicated across different hosts, providing a high level of data protection.

Mirroring helps maintain data availability even in the event of failures of individual components, ensuring that there is always a copy of the data accessible from a different location within the vSAN cluster. This setup is particularly crucial in environments where data loss or downtime must be minimized.

The concept of redundancy is central to the functionality of a vSAN environment, allowing for data integrity and continuous availability, even during maintenance tasks or unexpected failures. Distributing the data across multiple hosts while ensuring that there are mirrored copies allows vSAN to provide a resilient storage solution.

While other options touch on various aspects of storage management in a vSAN setup, they do not accurately represent the guarantees provided by the default storage policy.