Nutanix Certified Associate Practice Exam

Which component of the Distributed Storage Fabric does sequential write I/O first enter?

1. Cache Store

2. Extent Store

3. Data Store

4. Storage Pool

The correct answer is: Extent Store

Sequential write I/O first enters the Extent Store within the Distributed Storage Fabric. The Extent Store is responsible for managing the underlying data blocks that compose the storage. When a sequential write operation is initiated, the data is organized into extents, which are the fundamental units of data storage in the Nutanix architecture. This component is specifically designed to handle the efficient writing of data. Since the Extent Store manages both the allocation and the organization of these data blocks, it plays a crucial role in optimizing performance for sequential write operations. By entering the Extent Store directly, the data can be prepared and positioned for subsequent accesses, ensuring that performance remains high as the data is subsequently processed or retrieved. In contrast, the other components—like the Cache Store, Data Store, and Storage Pool—serve different roles in the overall architecture and are not the primary entry point for sequential writes. The Cache Store, for example, is designed for handling hot data and frequently accessed information rather than initiating write operations.