block storage
termcloud
Storage presented to a machine as a raw disk, which the operating system formats and manages itself.
It is what a database and an operating system expect, because they want to control layout, caching and ordering. The cloud consequence is attachment: a volume belongs to one machine at a time and lives in one zone, which makes it the thing that pins a workload to a location. Anyone designing for failure discovers that moving the compute is easy and moving the disk is the actual project.
Also known as: volume, san