This command is used to request the basic information of the SCSI device and is often used as a ping operation to test to see if the SCSI device is online.
这个命令用于请求SCSI设备的基本信息，并且常常用作ping操作，以测试scsi设备是否在线。
The solution is to check the computer and test machine communication line is off; check the online selection of sensor is correct; check the last test or operation keys.
解决方案是检查计算机与试验机的通讯线是否脱落；检查联机选择传感器是否选择正确；检查最近的试验或操作键。
Super stability, 7x24-hour continuous operation test, online use not crash, no restart, not dropped.
超强的稳定性，连续7x24小时的运行测试，联机使用不死机，不重启，不掉线。
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