Han 2011 (†644)Han, Yan. "Cloud Computing: Case Studies and Total Costs of Ownership" Information Technology and Libraries 30:4 (December 2011), p.198-206.
- availability (p.204): Amazon S3 and Google AppEngine are claimed to be highly available and highly reliable. . . . The cloud computing providers have huge advantages in offering high availability to minimize hardware failure, natural disasters, network failure, and human errors, while the locally managed server and storage approach has to be invested a lot to reduce these risks. (†1450)