现在，您了解了两个数据副本的优势和劣势。
You now have the advantages and drawbacks of two copies of the data.
考虑到在应用程序中使用已有数据的优势，这一点可能并不令人惊奇。
Considering the advantage of using existing information in your own applications, that's probably not terribly surprising.
而且，在规模不再是优势之前，数据中心也只能做这么大了。
And data centres can get only so big before scale ceases to be an advantage.
应用推荐