cat /proc/scsi/scsi
Attached devices:
Host: scsi3 Channel: 00 Id: 00 Lun: 00
  Vendor: HL-DT-ST Model: DVDRAM GSA-H42N  Rev: RL00
  Type:   CD-ROM                           ANSI  SCSI revision: 05
Host: scsi3 Channel: 00 Id: 01 Lun: 00
  Vendor: ATA      Model: ST380215A        Rev: 3.AA
  Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi6 Channel: 00 Id: 00 Lun: 00
  Vendor: WD       Model: Elements 1023    Rev: 2005
  Type:   Direct-Access                    ANSI  SCSI revision: 02