IBM SAN Volume Controller 在哪个层面实现存储虚拟化？（）A、主机及操作系统层面B、存储网络层面C、磁盘存储层面D、以上都不对
IBM SAN Volume Controller 在哪个层面实现存储虚拟化？（）
- A、主机及操作系统层面
- B、存储网络层面
- C、磁盘存储层面
- D、以上都不对
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