这些功能可以确保无论出现什么问题，数据都能保持可用性。
These features ensure that data remains available regardless of problems that may occur.
因为这可以在计划内停机期间保持系统正常运行，从而提高可用性。
Because it allows one to increase their availability by keeping systems up during planned outages.
架构师怎样才能在保持低成本的同时提高可用性呢？
What can architects do to improve availability while keeping costs low?
唯一的区别是，在保持系统高可用性、容错能力和伸缩性的同时，我们现在提供了一个丰富的SQL模型。
The only difference is we are now providing a rich SQL model while maintaining the high availability, fault tolerant and scale aspects of the system.
此时，您需要将数据库和应用程序服务器保持在同一可用性区域，来减少延迟和带宽消耗。
At the moment, you want to keep the database server and application servers in the same availability zones to reduce latency and bandwidth charges.
在现有的索引失效之后，这个特性可以在产品环境中保持表的可用性。
This feature maintains the availability of the table within a production environment after an existing index has ceased to be efficient.
提高系统的可用性，即通过提供冗余进程或硬件组件，确保在发生故障时保持某个级别的服务连续性。
Increase the system's availability by providing redundant processes or hardware components that can ensure some level of continuity of service in case of failures.
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.
如果主站点发生全站点事故，远程备用数据库会接替主数据库，从而保持数据可用性。
If a complete site failure occurs at the primary site, data availability is maintained by having the remote standby database take over as the primary database.
从系统管理员角度看，HACMP背后的理念是保持所有资源尽可能冗余，从而在所有层面上确保高可用性。
From a systems administration point of view, the main concept behind PowerHA is to keep everything as redundant as possible to ensure that there is high availability at all levels.
让门户中页面的数量和页面上Portlet的数量保持最少，从而提高可用性。
Increase usability by keeping to a minimum the number of pages in a portal and number of portlets on a page.
保持门户中的页面数和页面中的portlet数最少以提高可用性。
Increase usability by keeping the number of pages in a portal, and number of portlets on a page, to a minimum.
最后，研究表明(Van Schaik和Ling)如果可用性是你的重点，保持蓝色链接是最好的。
And finally, research shows (Van Schaik and Ling) that if usability if your priority, sticking to blue for links is best.
确定应用程序有可以转移到另一个系统上的服务IP标签，从而保持应用程序的高可用性。
Ensures that the application has a service IP label that can be transferred to another system, thus keeping the application highly available.
无论您制定什么样的解决方案，保持数据的可用性直到不再需要是避免冗余数据获取的关键。
Whatever solution you devise, having the data available until it is no longer needed is key to avoiding redundant data fetching.
部署管理器丢失对生产计算单元是一个巨大的打击，所以此服务器务必保持运行并发挥功能，从而确保拓扑具有较高的可用性。
The loss of a deployment manager is a great blow to a production cell, and so it is critical that this server remain running and functional to ensure a highly available topology.
任何规则内维护的状态都应加以保持，以支持集群配置和大部分业务配置通常要求的高可用性。
Any state maintained within rules should be persisted to support the clustered configurations and high availability requirements typical of most business configurations.
因此，服务IP应该保持高可用性。
对行业标准的依赖还确保了满足您需求的多种产品的可用性，相对于专利技术解决方案，使价格保持较低。
Reliance on industry standards also ensures availability of multiple offerings to address your needs, keeping prices lower versus proprietary technology solutions.
因此，路由到外部ODR可以被视为一个例外，用于在数据中心内的所有odr全部故障的情况下保持应用程序高可用性。
Therefore, routing to foreign ODRs could be considered an exception for the purpose of making applications highly available in case all ODRs in a data center fail.
现今歉收的组织经常对在添加新特性、扩展到新平台、修正积压的缺陷，和提高可用性中摇摆不定并保持平衡而困惑。
In today's lean organizations, confusion constantly ensues from juggling and balancing among adding new features, expanding to a new platform, fixing the backlog of defects, and improving usability.
ODR操作的最终结果是一个可伸缩的、高可用性环境，它对实际通信量做出响应，与您的业务目标和优先级保持同步。
The end result of the ODR's actions is a scalable and highly available environment that responds to real world traffic, synchronizing with your business goals and priorities.
它会保持资源组高可用性。
更重要的是，由于您的资产分布在各种机器上，您的数据在一些机器（或部分网络）瘫痪时也能保持高可用性。
What's more, because your assets are distributed to various machines, your data remains highly available should some machine (or portion of the network) go down.
因为IP地址需要保持高可用性，所以它属于资源组。
Since the IP address needs to remain highly available, it is a part of the resource group.
应用服务器(例如db2服务器)是需要保持高可用性的资源之一。
Application server is one such resource which needs to be kept highly available, for example a DB2 server.
步骤2定义希望保持高可用性的应用程序。
Step 2 Define the application you want to keep highly available.
步骤1定义保持应用程序高可用性所用的节点。
Step 1 Define the nodes that will keep your application highly available.
在PowerHA能够管理您的应用程序并保持其高可用性之前，需要把您的集群和应用程序的相关信息告诉PowerHA。
Answer: Before PowerHA can manage and keep your application highly available, you need to tell PowerHA about your cluster and the application. There are 4 steps.
在启动PowerHA时，它会开始管理应用程序并保持其高可用性。
When you start PowerHA it will begin managing the application and keeping it highly available.
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