这是一个简单的计算，假定您知道集群的大小和您允许集群作为一个整体仍然“可用”的情况下失效的服务器的数量。
This is a simple calculation that assumes you know the cluster size and the number of servers you are willing to allow fail and still regard the cluster as "available" as a whole.
所以，你们必须，在这些规定下，假定不同大小和地点的,冷却剂损失的事故。
So you have to, under this rule, postulate several loss of coolant accidents of different sizes and locations.
假定在前面的中使用页大小为4 MB的大内存页，同样1 GB内存只用256个页表条目就可以映射，而不需要262,144个。
Assuming a large page size of 4 MB is used in the same example from above, that same 1 GB of memory could be mapped with only 256 page-table entries instead of 262,144.
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