Replication is very useful and important to support the realization of intrusion tolerance, including active replication and passive replication.
复制技术是实现容忍入侵，提高系统的可用性和可靠性的一个重要支撑技术，包括主动复制和被动复制。
参考来源 - 容忍入侵的群组通信系统中全序多播协议研究Considering the designed hybrid topology, we propose a new multiple video cache strategy, which combines active replication and passive replication together.
通过分析现有多视频缓存与分发(MVC)策略的不足,结合混合式的网络拓扑设计,文中提出了一种新的以段为单位的主动复制与被动复制相结合的策略。
参考来源 - 高质量视频点播服务的P2P数据分发策略研究·2,447,543篇论文数据，部分数据来源于NoteExpress
基于主动复制，但避免了重复嵌套呼叫问题。
It is based on the active replication algorithm, but it avoids the redundant nested invocation problem.
一个确定性系统的影响是广泛的，但一个优点是立即清除：主动复制是微不足道的，强烈的一致，并没有遭受的上述缺点。
The repercussions of a deterministic system are broad, but one advantage is immediately clear: active replication is trivial, strongly consistent, and suffers none of the drawbacks described above.
与其他的硬件复制技术一样，在主动复制时，尽管备份节点上的IASP是不可访问的，但是节点本身对于完成其他工作是可访问的。
AS with the other hardware replication technologies, although the IASP is not accessible on the backup node while its actively replicating, the node itself is available to do other work.
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