故障转移和灾难恢复 [英] Failover & Disaster Recovery

问题描述

故障转移和灾难恢复之间有什么区别?

解决方案

故障转移:当一台计算机发生故障时，另一台计算机(通常在同一位置)将接管并恢复服务

灾难恢复:当哥斯拉破坏数据中心时，您确实有其他位置可以继续提供服务以及其他位置的协议/方法，以了解如何继续提供服务

根据每种服务的特定需求，灾难恢复可能只是备份磁带，位于其他位置的保险箱中.换句话说，它只是具有定义的协议以从灾难中恢复.同样，故障转移可能只是拥有一台备用备份计算机，它使您可以转到数据中心以接管发生故障的计算机，即具有定义的协议，该协议规定了发生计算机故障时的处理方法.

总结起来，故障转移回答了如果一台机器发生故障该怎么办?"，灾难恢复回答如果发生灾难(火灾，洪水，战争，ISP破产等等)，我该怎么办". ?'

高可用性部署体系结构

What's the difference between failover and disaster recovery?

解决方案

Failover: When one machine fails, another machine (usually in the same location) takes over and resumes service

Disaster recovery: When Godzilla destroys your data center, you do have alternative locations to keep providing your service and protocols/means for the other location to know how to keep delivering the service

Depending on the particular needs of each service, disaster recovery might just be a backup tape in a safe in a different location. In other words, it's just having a defined protocol to recover from disaster. Likewise, failover might just be having a spare backup machine which makes you go to the data center for it to take over the place of the failed one, that is, having a defined protocol about what to do in case of machine failure.

Summing up, failover answers the question 'what do I do in case a single machine fails?', disaster recovery answers 'what do I do in case a disaster happens (fire, floods, war, ISP goes bankrupt, whatever)?'

High Availability Deployment Architecture

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