In block storage, files are split into fixed-size chunks of data called blocks that have their own addresses

Explanation

Each block is an individual piece of data storage. Because each block is addressable, blocks can be retrieved efficiently. Think of block storage as a more direct route to access the data.

When data is requested, the addresses are used by the storage system to organize the blocks in the correct order to form a complete file to present back to the requestor. Besides the address, no additional metadata is associated with each block.