例如，备份和恢复设施(包括用于故障恢复的高可用性数据复制)都支持xml列中存储的文档。
For example, backup and restore facilities — including high availability data replication for failover situations — all support documents stored in XML columns.
复制碎片是主碎片中所有数据的备份副本，它们的主要目的是从主碎片失败中恢复，提供高可用性。
Replica shards are backup copies of all the data in the primary shard, and their main purpose is to recover from a primary shard failure to provide high availability.
在传统的数据库部署中数据库复制技术常常被用来达到高可用性。
In traditional database deployments database replication techniques are commonly used to achieve high availability.
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