参考信息：
https://oracle-base.com/articles/misc/measuring-storage-performance-for-oracle-systems#orion
It used to be available to download for a number of platforms from OTN, but that download is no longer available. Instead, it is included in the "$ORACLE_HOME/bin" directory of Grid Infrastructure (GI) and database installations.
可见该工具位于$ORACLE_HOME/bin下面
执行orion -help可以看到详细的说明
先把要测试的设备写入到同路径的文件中，然后即可测试
结束后会多出5个文件，分别是测试详细信息，概要信息，iops，mbps，latency
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