To sign up for Rackspace Metrics, please go to http://go.rackspace.com/metrics
Rackspace Metrics is a multi-tenant software-as-a-service (SaaS) product that offers a flexible and affordable platform for storing and serving time-series metrics. It provides a REST API for metrics ingestion and retrieval. In addition, it also provides out-of-box integration with popular open source tools. Rackspace Metrics is designed to meet the functional and performance requirements of enterprise-scale metrics.