Final answer:
The cloud deployment model where only a single customer's data is stored on specific systems/hardware is the Private Cloud, which is exclusive to one organization.
Step-by-step explanation:
The common cloud deployment model that typically features only a single customer's data/functionality stored on specific systems/hardware is the Private Cloud. In a private cloud environment, the infrastructure and services are maintained on a private network, and the hardware and software are dedicated solely to one organization. This contrasts with a public cloud, which serves multiple organizations on the same hardware, and a community cloud, which is shared between multiple organizations with a common goal. The hybrid cloud is a mix of both private and public clouds.