lustre:How should I stripe my files?

sealinger

1. "One of the most frequently asked Lustre questions is “How should I stripe my files,
   
2. and what is a good default?” The short answer is that it depends on your needs. A
   
3. good rule of thumb is to stripe over as few objects as will meet those needs and no
   
4. more."

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请问各位怎样理解上面所说的这个“good rule”呢？？

还有"object store"怎么理解呢？

如何知道一个文件包含了多少个object？