During the migration operation, all the memory that has been paged out to a paging space device is first read into real memory before being transmitted to the target server.
在迁移操作期间，换出到分页空间设备上的所有内存先被读入真实内存中，然后传输到目标服务器。
2
You're also seeing that there are 1048052 4k pages available on your paging space, which comes out to 4gb.
还可以看到，分页空间中有1048052个4k的页面可用，等于4 GB。
3
In our experience, the number one cause for a system crash is running out of paging space.