As a practical matter, most users won't need to concern themselves with DB2's new physical storage management architecture for XML data.
在实践中，大多数用户不需要关心DB 2对XML数据采用的新的物理存储管理体系结构。
LVM is an AIX disk management system that maps the data between logical and physical storage.
LVM是一种AIX磁盘管理系统，它可以在逻辑和物理存储之间映射数据。
Metadata – Since there is a mapping between logical and physical location, the storage metadata and its management becomes key to a working reliable system.
元数据——由于有着逻辑与物理位置之间的映射关系，因此对于一个运行的可靠系统来说存储元数据的管理显得极为关键。
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