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

What does setting the number of failures to tolerate to 3 in a storage policy do?

1. Increases redundancy requirements

2. Decreases read performance

3. Reduces storage capacity used

4. Eliminates the need for disk stripes

The correct answer is: Increases redundancy requirements

Setting the number of failures to tolerate to 3 in a storage policy increases redundancy requirements. This means that the storage system is configured to ensure that it can withstand the failure of three disks or nodes without losing data availability or integrity. To achieve this level of fault tolerance, the system will write additional copies of the data across multiple disks. This higher redundancy ensures that in the event of multiple disk failures, the data remains accessible and recoverable. However, such an increase in redundancy typically entails using more storage resources, as the system must allocate additional space to maintain the required number of data replicas. This adjustment is crucial for organizations that prioritize data protection and availability, particularly in high-availability environments. In contrast, while increasing redundancy may affect performance or storage efficiency, the primary focus of this configuration setting is to bolster the robustness of the data storage against potential failures.