Cost Comparison: Rackspace Cloud Block Storage vs AWS Elastic Block Storage
blog.planforcloud.com
blog.planforcloud.com
Results: AWS = $126/month Rackspace = $150/month
Rackspace SSD vs AWS PIOPS (for 1TB of storage with 1000 IOPS)
Results: AWS = $225/month Rackspace = $700/month
From the blog: "Rackspace's Cloud Block Storage offerings are positioned to rival AWS' EBS offering. They are priced slightly higher than AWS' offering, however as stated by Rackspace's official blog [1], they claim higher performance, SLAs and support."