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 Chapter 1. Overview

Rackspace Cloud Block Storage is a block level storage solution that allows customers to mount drives or volumes to their Rackspace Next Generation Cloud Servers™. The two primary use cases are (1) to allow customers to scale their storage independently from their compute resources, and (2) to allow customers to utilize high performance storage to serve database or I/O-intensive applications.

Interactions with Cloud Block Storage occur programmatically via the Cloud Block Storage API as described in this developer guide.

Rackspace offers both a low cost/gigabyte (GB) option with standard performance for customers who only require more storage and a high performance option that provides increased storage with higher performance (at a higher cost/GB).

Highlights of Rackspace Cloud Block Storage include:

  • Mount a drive to a Cloud Server to scale storage without paying for more compute capability.

  • A high performance option for databases and high performance applications, leveraging solid state drives for speed.

  • A standard speed option for customers who just need additional storage on their Cloud Server.

  • Two simple price options:

    • Lower cost per GB for standard performance and additional storage.

    • Higher cost per GB for high performance and additional storage.

  • Cloud Block Storage is an add-on feature to Next Generation Cloud Servers. Customers may not attach Cloud Block Storage volumes to other instances, like first generation Cloud Servers.

  • Cloud Block Storage is multi-tenant rather than dedicated.

  • When volumes are destroyed, Rackspace keeps that disk space unavailable until zeros have been written to the space to ensure that data is not accessible by any other customers.

  • Cloud Block Storage allows you to create snapshots that you can save, list, and restore.