冗余服务器不一定是在同一地理位置上。
Redundant servers are not necessarily located in the same geography.
冗余服务器必须在生产环境中通过必需的应用程序服务器容量。
Redundant servers must be sized according to the required application server capacity in the production environment.
注意：如果配置有冗余服务器，请在服务器a执行该操作。
Attention: If you have redundant servers, do this on server a.
如果部署有冗余服务器，在服务器B上重复步骤3 ~8。
If you have redundant servers, repeat steps 3 to 8 on server B.
您应该在需要的地方添加冗余服务器，它们在主服务器失败时接管其工作。
You should add redundant servers where possible, which will take over in the event of the primary server failing.
注意：如果部署有冗余服务器，先切换服务器B再切换服务器A。
Attention: If you have redundant servers, change the server status on server B and then on server A.
虽然冗余服务器是一项额外的成本，通过冗余服务器可以获得高可用性。
While redundant servers are an additional cost, high availability is achieved through redundant servers should outages occur.
拥有的冗余服务器比他们的竞争对手小只会导致与递减的服务器容量相关的性能降低。
Having redundant servers smaller than their production counterparts only results in negative performance related to decreased server capacity.
借助冗余服务器，从故障服务器切换到备用服务器的过程称为故障恢复(或热交换)。
With redundant servers, the process of swapping from a failed server to a spare server is called failover (or hot-swapping).
图2显示了一个服务器集群，它们中的两个冗余服务器是传入的工作量处理中的活动参与者。
Figure 2 shows a cluster of servers where two of the redundant servers are active participants in processing the incoming workload.
副本的绑定信息保存在配置中，并在运行时动态获得，所以添加冗余服务器只需更新配置，不用修改源码。
The binding information for replicas is kept in configuration and is dynamically acquired at runtime, so adding a redundant server requires only a configuration update, not changes in source code.
如何计划必需的冗余服务器数量必须以一种方式来管理，以便使其保持在一个合理的预算内，从而拥有一定的可用性保证。
How to plan the number of required redundant servers has to be conducted in such a way so as to stay within some reasonable budget, yet have some assurances of availability.
冗余服务器、#5和 #6提供继续处理传入的请求的能力，其中两个服务器应该需要为计划的和未计划的维护作准备。
The redundant servers, #5 and #6, provide the ability to continue processing incoming requests, should two of the servers need planned or unplanned maintenance.
如果在一般环境下，企业不能负担冗余服务器，数据中心，以及其他百分之 99.999运行时间所需的基础设施，这点非常有用。
This is particularly advantageous if, under ordinary circumstances, the company cannot afford redundant servers, data centers, and other infrastructure that is required for 99.999 percent uptime.
该解决方案使用与RAID文件服务器相同的技术，允许整个ZEO数据库集群以冗余的方式操作，并且所有服务器都参与读和写。
It USES the same techniques as a RAID file server to allow an entire cluster of ZEO databases to operate redundantly, with all servers participating in both reads and writes.
还要有两个能够访问这个抽屉的适配器以保证服务器端的可用性和冗余。
There should be two adapters that can access the drawer to keep availability and redundancy on the server side.
“变种1”计算要求您输入为了支持您的操作能力(也就是说没有任何冗余)需要的服务器数量。
The "Variant 1" calculation asks you to enter the number of servers you require in order to support your operating capacity (i.e. without any redundancy).
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。
The database server itself might be deployed as a cluster with the multiple database servers providing redundancy and scalability.
如图4所示，元数据服务器管理名称空间部分，可以(为冗余和性能)进行重叠。
As shown in Figure 4, the metadata servers manage portions of the namespace and can overlap (for redundancy and also for performance).
增加两个额外的服务器作为冗余参与者处理传入的工作量。
Adding two additional servers as redundant participants in handling the incoming workload.
我们将重点介绍与构建可伸缩的、冗余存储服务器有关的部分。
We will concentrate on portions relevant to building a scalable, redundant storage server.
在某些情况下，为了保证VIO客户机LPAR上的卷组冗余，需要给两个不同的VIO服务器分配两倍的物理磁盘。
In some cases, for volume group redundancy on the VIO client LPARs, it can require twice as many physical disks being assigned to two different VIO servers.
CE服务器没有“优化”中间(冗余)更新。
The CE server does not "optimize away" intermediate (redundant) updates.
数据库查询非常高效，服务器存在冗余，内存被高效使用。
Database queries are efficient, servers are made redundant, memory is used efficiently.
本文仅讨论与使用两个VIO服务器提供冗余相关的设置工作。
This article only covers the setup of those sections specific to providing redundancy through the use of two VIO Servers.
这种方法也可以用于更高级别，即所有服务器都是冗余的，以便最大限度地减少停机时间。
This approach also works at higher levels, where entire servers are redundant to minimize downtime.
需要规划的第三个方面是在同一个物理pSeries或Systemp服务器上设置冗余的VIO服务器。
The third area you need to plan is to have redundant VIO servers on the same physical pSeries or System P server.
应用程序或服务器没有冗余性。
服务器冗余在分布式unix或Windows平台中并不普遍。
Server redundancy is not that common in distributed UNIX or Windows platforms.
最后，值得注意的是，集群中的各组成部分，包括PowerHApureScale服务器本身，是冗余的。
Finally, it is worth noting that components in the cluster-including the PowerHA pureScale server itself-are redundant.
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