Which type of storage allows multiple VMs to access the same data store concurrently?

Choosing Storage Area Network (SAN) as the correct answer reflects an understanding of how storage architectures facilitate concurrent access to data by multiple virtual machines (VMs). A SAN is designed specifically for high-performance and high-availability environments where multiple servers can access a shared pool of storage resources over a dedicated network. This allows numerous VMs to read from and write to the same data store simultaneously, which is essential for applications that require high throughput and low latency.

The functionality of SANs also supports advanced features like data replication, snapshots, and efficient data management, making them especially suitable for virtualized environments. The architecture of a SAN allows it to abstract storage as a network resource, which distinguishes it from other types of storage solutions.

In contrast, Direct Attached Storage (DAS) is directly connected to a single server and does not allow shared access between multiple VMs. Network Attached Storage (NAS) provides file-based storage but generally has limitations regarding performance when multiple VMs access a single data set at the same time. All-Flash Arrays offer fast storage performance but do not inherently guarantee concurrent access capabilities unless they are implemented within a SAN context.

By leveraging a SAN, organizations can ensure that multiple VMs operate efficiently and cohesively on the same data store,