Nutanix Certified Associate Practice Exam

To enhance resiliency in a primary datacenter distributed across three racks, which strategy should be employed?

1. Block awareness

2. Time Stream to a remote site

3. Rack awareness

4. Async DR to a remote site

The correct answer is: Rack awareness

Rack awareness is essential for enhancing resiliency in a primary datacenter that is distributed across multiple racks. By implementing rack awareness, the infrastructure can intelligently distribute data and workloads across the racks, ensuring that if one rack experiences a failure or outage, the remaining racks can still maintain data availability and operational integrity. In a distributed environment, when rack awareness is employed, the system is designed to understand the physical layout of the datacenter and the dependencies of the workloads. This understanding allows for placement of data and workloads in such a way that critical resources are not concentrated in a single rack, thereby reducing the risk of a complete service disruption due to a single point of failure. Other strategies like block awareness focus more on the underlying storage architecture to ensure data integrity and performance, while time stream to a remote site and async disaster recovery primarily deal with data transfers and redundancy to distant locations rather than optimizing resilience within the datacenter itself. Thus, rack awareness is the most effective approach for achieving improved resilience within a multirack setup.