Which type of storage is accessed via an API and is not attached to a compute node?

Object storage is specifically designed for accessing large amounts of unstructured data through an API, making it highly scalable and flexible for various applications. Unlike direct attached storage or block and file storage, which are typically tied to specific compute nodes, object storage operates independently of any single machine. This separation allows users to retrieve and manage data using web-based APIs, providing a more cloud-native approach to data storage.

Object storage also organizes data in a flat structure, allowing it to handle vast amounts of information without the complexities of traditional hierarchical file systems. Each piece of data, or object, is stored with its metadata, making it easier to search and manage data across a distributed system. This architecture is particularly beneficial for cloud applications where data accessibility and distribution are key.

The other storage types, such as block and file storage, involve more direct relationships with specific compute resources, meaning their access patterns and management strategies differ significantly from those of object storage. This distinction is critical when considering storage solutions, especially in cloud environments where scalability and API integration are essential.