I figured out what the issue was. Although I installed the LSI drivers for the raid controller, ESXi continued to use the older default driver with the controller even though the newer driver was available. I didn't figure that out until I found a similar situation described someplace else. After disabling the default driver so that ESXi had no choice but to use the LSI version of the driver, the problem disappeared. I don't know if this is a VMWare issue or a problem with how LSI packaged the install script for their driver, but it doesn't appear to be a problem with the hardware.
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