Raw persistent storage types take less time to provision due to the nature of how the storage actually consumes sectors on the back-end systems.
由于存储实际上是使用后端系统上的扇区，所以原始持久性存储类型的配给时间会比较短。
2
An entry in this table stores a directory, a cooked file, or a raw device for use by the storage provisioning feature.
该表中的一个条目存储目录、熟文件或原始设备，供存储配置特性使用。
3
You define a pool of storage, which can be RAW, COOKED, or filesystem files or even a directory name (the engine will create and allocate new files on its own within those directories).