08 May '12, 11pm

All About High Availability

All About High Availability

For the purpose of this post, I think we should establish a description of Disaster Recovery and how it relates to High Availability. Disaster recovery includes the processes, policies and procedures related to preparing for recovery or continuation of technology infrastructure critical to an organization after a natural or human-induced disaster. There are 7 tiers to disaster recovery; tier 0 is no data loss prevention or basically several single points of failure, while tier 8, which is a fully automated failover system with zero to minimal data loss. Tier 7 and 8 are more in the classification of High Availability. Recognizing that there are plenty of discussions, opinions, and confusion regarding High Availability/Disaster Recovery, I have decided to discuss what I believe is the most logical solution for e-commerce and mission critical cloud applications.

Full article: http://www.engineyard.com/blog/2012/all-about-high-availa...

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