Why am I getting higher IOPS number than the specified value after enabling QoS?
This is the normal phenomenon. Because XCubeSAN doesn’t know the real traffic loading of I/O which comes from the client side, and when the IOPS is higher than the maximum IOPS which limited by QoS. XCubeSAN will trigger QoS to restrict the I/O processing and reduce it to the QoS maximum IOPS limit.
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