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。

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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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Despite only the northern tip of the reserve being open to tourism, safari bus congestion is low enough to make you sometimes feel as if you are the only human in a world dominated by mega fauna.

BBC: Tanzania��s overlooked coastline