Middleware creates a flexible system where the underlying RDBM may be seamlessly changed, and additionally allows a single database server to be replaced with a cluster of machines.
中间件创建一个灵活的系统，在这个系统中，底层的RDBM可以无缝地改变，而且允许用集群替换单一的数据库服务器。
Or maybe a cluster — with a dedicated database server with RAID and tape backups for sure, and also a separate machine to run the interface.
或者可能是一个集群——有一个使用了RAID的专用的数据库服务器，以及磁带备份的保证，还有单独的机器来运行界面。
When update activity is excessive, the ability of cluster replication to maintain database synchronization becomes limited if the server is not sized properly.
如果没有适当地安排服务器的大小，当更新活动比较频繁时，集群复制维护数据库同步的能力就会受到限制。
The database server itself might be deployed as a cluster with the multiple database servers providing redundancy and scalability.
数据库服务器本身可以作为一个集群部署，同时使用多个数据库服务器提供冗余和可扩展性。
In the previous figure you can see that Server a hosts a production database called database a as well as a standby database in an HADR cluster called database B1.
在上图中可以看到服务器A宿主了一个名为数据库a的生产数据库和一个名为数据库B1的HADR集群中的备份数据库。
To have better performance for the system, it's recommended to have a separate database server for WDPE cluster environment and another one for ITCAM server.
为使这个系统拥有更好的性能，建议 WDPE集群环境和ITCAM服务器各有一个单独的数据库服务器。
If a failed server reintegrates into the ha cluster (that is, becomes available again), it will stop the database on the standby server and start it on the reintegrated server.
如果失效服务器重新集成到ha群集中(即重新变得可用)，它将停止备用服务器上的数据库，并启动重新集成的服务器上的数据库。
If one of the servers in the high availability cluster fails, then the clustering software transfers the workload to the idle standby database server.
如果高可用性集群中某一个服务器出故障，那么集群软件就会将工作负载转移到idle备用数据库服务器。
Each server in the LEI cluster used the same LEI Administration database to work with.
LEI集群中的每台服务器都使用同一个LEIAdministration数据库进行工作。
The Cluster Manager then selects the least-busy server and returns the server name to the client, which can open the database on that server.
然后，ClusterManager选择最不繁忙的服务器并将其名称返回给客户机，这样客户机就可以打开该服务器上的数据库。
As mentioned above, keeping the application data in a central database ensures consistent server write and consistent read data in the cluster environment.
如上所述，将应用程序数据保存在中央数据库中可以确保在集群环境中写入和一致地读取数据。
For example, a mysql-cluster-based database tier would be comprised of two server groups, an NDBD group and a manager group.
例如，基于mysql集群的数据库层可能包含两个服务器组，一个ndbd组和一个manager组。
Unsupported cluster configurations include deploying a complete report server installation (that is, a report server and its database) on each node of a multi-node cluster.
不支持的群集配置包括在多节点群集的每个节点上部署完整的报表服务器安装(即报表服务器及其数据库)。
Unsupported cluster configurations include deploying a complete report server installation (that is, a report server and its database) on each node of a multi-node cluster.
不支持的群集配置包括在多节点群集的每个节点上部署完整的报表服务器安装(即报表服务器及其数据库)。
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