Remember: Although it is not displayed here, target 7 is always reserved for the SCSI host adapter.
记住：尽管这里没有显示，目标7总是被保留用于SCSI主机适配器。
reserve : This command is issued by a host bus adapter to obtain or maintain ownership of a SCSI device.
reserve（占用） : 这个命令由总线适配器发送用以获得或保留对SCSI设备的所有权。
Release: This command is issued by the owning host bus adapter when a disk resource is taken offline; it frees a SCSI device for another host bus adapter to reserve.
release(释放)：当磁盘资源下线的时候，这个命令由拥有该磁盘的总线适配器发送。这个命令释放该SCSI设备供其他总线适配器占用。
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