Major types of storage
Block storage
Bootable and file (need OS to store metadata about folder structure), database, protocol: iSCSI and Fibre Channel
File storage
Only file in hierarchical folder, for multiple devices/share, protocol: SMB, NFS
Object storage
Flat structure, rich metadata support, protocol: HTTP
Intuitively, think about “block storage” as “disk”, “file storage” as file share, “object storage” cloud/HTTP-based storage
Example: