Which type of storage typically offers poor performance when data sharing is required?

Direct attached storage (DAS) typically offers poor performance when data sharing is required because it is designed for single-user access. In a DAS setup, storage is directly connected to a specific server or workstation, which means that only that device can access the data stored on it. As a result, when multiple users or systems need to work with the same data concurrently, the lack of a centralized access point can lead to significant performance bottlenecks and data access latency.

In contrast, other types of storage like block storage, file storage, and object storage are generally designed for multi-user environments and can support concurrent access, making them more suitable for scenarios that involve data sharing. These storage types typically leverage network protocols and architectures that facilitate simultaneous connections from multiple clients, optimizing performance and access efficiency.