Hi to everyone,
      I follow your hint on my problem.
This is the result of probe-scsi-all at ok prompt:
{0} ok probe-scsi-all
/pci@8,600000/SUNW,qlc@4
LiD HA LUN  --- Port WWN ---  ----- Disk description -----
 0   0   0  2100002037e6ef65  SEAGATE ST336605FSUN36G 0438
 1   1   0  2100002037e6e67b  SEAGATE ST336605FSUN36G 0438

/pci@8,700000/scsi@6,1

/pci@8,700000/scsi@6
Target 6
  Unit 0   Removable Read Only device    TOSHIBA DVD-ROM SD-M14011009

/pci@8,700000/pci@3/scsi@5
Target 0
  Unit 0   Removable Medium changer    STK     L20             0211
Target 1
  Unit 0   Removable Tape     IBM     ULTRIUM-TD1     22U0

/pci@8,700000/pci@3/scsi@4

Unfortunaly I have no sign of this address /pci@8,700000/pci@3/scsi@5 even
after a reconfigure boot at O.S. level.

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