MetroMirror是同步复制选项。
您可以选择使用同步复制或异步复制。
同步复制通过良好的可用性实现最高的性能。
Asynchronous replicas are used for highest performance with good availability.
HADR提供所有被日志记录的DB 2操作的同步复制。
HADR provides for synchronous replication of all logged DB2 operations.
同步复制的表中的可用字段数可按如下进行计算。
The total number of fields available in a replicated table can be calculated as follows.
这些解决方案中涉及的复制是同步复制或异步复制。
The replication involved in these solutions is either synchronous or asynchronous.
在所有同步复制碎片确定新数据的接收之后，写入事务才算完成。
A write transaction is not completed until all synchronous replica shards have confirmed receipt of the new data.
同步故障转移可用性有两种类型：专门化的HA软件和同步复制。
Synchronous failover availability comes in two types: specialized HA software and synchronous replication.
如预期一样，同步复制的代价使事务执行时间明显延长。
As expected, the cost of replication adds significantly to the execution time of a transaction.
目的建立矿山管理系统中的移动数据库同步复制模型。
Aim To propose a synchronization and replication framework in implementing database in MIS of mine.
早期的一贯做法，强烈企图同步复制事务执行期间的复制品。
Early approaches to strongly consistent replication attempted to synchronize replicas during transaction execution.
它由一对服务器组成—主服务器和HDR备用服务器—并且同时支持异步和同步复制模式。
It consists of a pair of servers - the primary and the HDR secondary - and supports both synchronous and asynchronous replication modes.
错误修正、添加、移除及初始化同步复制都是费事的，且相关操作创建实例间的紧耦合。
Fault fixing, adding, removing, and initially synchronizing replicates are all expensive and involved operations that create tight coupling between instances.
同时还对词法分析、语法分析、预处理技术进行了讨论，并且提出一种同步复制的机制。
Meanwhile, other techniques, like word analysis, parsing, and pretreatment technology are discussed in this paper and a real-time synchronization method is presented.
同步复制使用分布式事务处理管理复制数据操作，(几乎)同时的作为工作单点，将操作应用到所有复件。
Synchronous replication copies data operations using distributed transaction management that applies operations to all copies (almost) simultaneously as a single unit of work.
对于同步复制，目标节点不接收到此写入操作，生产节点上的写入操作就无法完成，这样可以保证两边的复制一致。
With synchronous replication, the write on the production node does not complete until it has been received on the target node, so you are guaranteed identical copies on each side.
同步复制意味着JVM退出时，没有数据丢失，但由于主进程必须等待获得变更信息的复制品，因此速度会慢一些。
Synchronous replication means no data loss when a JVM exits but it is slower as the primary must wait for the replicas to acknowledge they have received the change.
存储1、2、4或8个字节；用于“同步复制ID”(GUID)时存储16个字节。“字段大小”属性定义具体的数字类型。
Stores 1, 2, 4, or 8 bytes; stores 16 bytes for Replication ID (GUID). The FieldSize property defines the specific Number type.
此解决方案的优势在于，它提供从非尽力服务的异步服务到有保证的同步事务复制的所有选择。
The advantage of this solution is that it provides everything from asynchronous replication that is not best effort to guaranteed synchronous transactional replication.
例如，数据库复制和数据库同步就是一些异类。
For example, database replication and database synchronization is something different.
这种关系是在初始同步期间和启动复制集的时候维护的。
This relationship is maintained during initial synchronization and when starting the replicate set.
有时，您只需要复制那些在上次复制操作之后进行过更改的文件，从本质上说是进行同步，而不是彻底的再次复制。
Sometimes, you only need to copy the files that have changed since the last time you performed a copy, essentially synchronization rather than a complete re-copy.
同步和复制间隔由SCM项目管理员控制。
Synchronization and replication intervals are controlled by the SCM project administrator.
这个复制也可以是采用同步策略的随需触发器。
The replication can also be trigger on an as-needed basis using the synchronization strategies.
例如，数据复制和同步就是一个大问题。
完成同步的方法有很多，例如DB2复制。
There are many methods to accomplish synchronization such as DB2 replication.
根据应用程序的性能和可用性需求选择同步和移除复制的数量。
Choose the number of synchronous and asynchronous replicas based on the performance and availability requirements of your application.
复制可以配置为同步或异步复制。
Replication can be configured using synchronous or asynchronous replication.
通过选择同步和异步复制的数量及其区域放置，您可以在失败时平衡性能、可用性和弹性。
By selecting the number of synchronous and asynchronous replicas, and their zone placement, you can balance your performance versus your availability and resilience in the face of failures.
同步需要的时间取决于需要复制的数据量。
The time it takes for the synchronization to complete depends on the amount of data that needs to be replicated.
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