Regardless of whether it's a single system or small number of systems, the result is catastrophic, and your application will probably be unavailable for a period of time.

无论是单个系统还是少数几个系统，结果都是灾难性的，您的应用程序可能在一段时期内不可用。

youdao

The backup may be an online operation, but the restore is offline and the time that the database is unavailable may be unacceptable given your availability requirements.

备份操作可以在线完成，但恢复操作是离线的，而且其间数据库不能用，如果有可用性要求，那么这种情况是不可接受的。

youdao

If any given server is unavailable or too busy at the time the request arrives, the cluster transparently passes the request to a server capable of handling the work.

如果特定服务器在请求到达时不可用或过于繁忙，集群可以透明地将该请求传递给其他可用的服务器。

youdao

Both websites are still unavailable at the time of this writing.

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