The components of the Cloud backup and recovery system will be determinant on the type of Cloud construct that is selected.  One organization may prefer to use a public Cloud another may decide to create a private Cloud. Yet others may select a hybrid model.

The public Cloud will abstract the entire backup and recovery storage hardware to the Cloud vendor and leave the organization using that Cloud, free to realign and redeploy the existing hardware to link up with the Cloud service account.  The security boundaries for the organization will be defined at a software level and will include user authentication/authorization protocols and encryption technologies.  The management console interface will install on a centralized console and may be agent based or agentless, depending on the architecture adopted by the Cloud vendor.

Private Cloud configurations may or may not require the set up and use of a data center.  If an organization owned data center is used for creating a Cloud service, the physical and virtual security of the data center will remain the responsibility of the organization. The hardware will have to be purchased and installed by the end user. The ready to use agent based or agentless Cloud backup software can be downloaded and used to create data backup and recovery stores on a specified server(s) within the data center. Scale up operations can be capital intensive. Creation of the disaster recovery sites and hot sites with failover provisioning will remain the responsibility of the organization.  The Private Cloud vendor will guarantee only the efficiency of the software and associated encryption, de-duplication, and compression technologies.  If the Cloud service provider’s data center is used, the hardware physical and virtual security of the data center is abstracted to the Cloud service provider. The data center may be shared across organizations and the uptime guarantees will be given by the service provider. Hardware can be scaled up on demand. Optimization of hardware use will be automatic.

Hybrid Clouds combine the best features of both public and private Clouds. Existing data centers and servers can be re-designated for local backup while third party Cloud service provider data centers can be used for remote backup and recovery.  The software for the hybrid Cloud permits the user create local and remote backups simultaneously, continuously or per pre-defined schedules. The data is transmitted over the Internet in an encrypted format to both the local and the remote server and stored encrypted at rest.  The uptime guarantees given by the service vendor is applicable only to data centers operated by the provider. Local data center management remains with the end user.