Rackspace

Rackspace Cloud offers a set of cloud computing services like hosting web applications, Cloud Files, Cloud Block Storage, Cloud Backup, Databases and Cloud Servers etc.
Rackspace Cloud Block Storage uses a combination of solid-state drives and hard drives to deliver high performance.
Rackspace Cloud Backup uses compression and encryption techniques and provides file-level backups with low cost.
Customers using Rackspace Cloud services are charged based on their usage.