A Hybrid Cloud Storage Architecture for Service Operational High Availability

Cloud storage services like Dropbox and Google Drive offer convenient file syncing, sharing, and collaboration services. These services are popular, however many enterprises have been wary to adopt them for business documents because of security, privacy, and ownership issues. Enterprises' concerns create large amount of private cloud storage service demands, but not all enterprises have enough resources to build and maintain their own private services. To address this issue, this study developed a cloud storage system software, which can be easily installed on commodity server to be a private cloud storage appliance to serve services like public offers in enterprises. Since the availability of a pure private service is not enough, a hybrid cloud storage architecture is also introduced in this paper along with the proposed storage system software. In the proposed hybrid architecture, the encrypted remote backup store and automatic service restore mechanism will be illustrated. With this hybrid cloud storage architecture, private storage appliance can cooperate with public virtual one to provide enterprises with a service operational high availability. The performance of the local cloud storage system software was measured. The result indicates that our cloud storage system software is able to be installed on resource limited devices to serve enterprise employees.