再次强调，底层技术始终是DB2，因此在选择版本时不需要考虑可移植性、易用性等等。

Again, the underlying technology is always DB2, so decisions about what edition to use has nothing to do with portability, ease of use, etc.

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允许社区享用新技术带来的提升的易用性，成本效益或能源效率。

Allows community to take advantage of new technologies that may appear and that offer improved usability, cost effectiveness or energy efficiency.

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首先，我们将介绍PowerHA SystemMirror中可用的各种复制技术，然后再介绍它的可靠性和易用性优点。

First, we'll explain the wide range of replication technologies available within PowerHA SystemMirror, and then we'll cover its reliability and ease of use advantages.

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