有谁可以帮我认识一下这些磁带设备吗？搞晕了

rmt0 Available 1S-09-00-5,0 7332 4mm Auto Loader SCSI Tape Device rmt1 Available 1D-08-01     IBM 3580 Ultrium Tape Drive (FCP) rmt2 Available 1D-08-01     IBM 3580 Ultrium Tape Drive (FCP) rmt3 Available 1D-08-01     IBM 3580 Ultrium Tape Drive (FCP) smc0 Available 1D-08-01     IBM 3582 Library Medium Changer (FCP) smc1 Available 1D-08-01     IBM 3573 Tape Medium Changer (FCP)

谁帮我看看这些设备，smc0.smc1都是带库吗？rmt的都是驱动器吗？带库的驱动器又分别是哪几个呢？