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。

youdao

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。

youdao

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。

youdao