3.1. The First Two Letter

The following is based on the example device dkb1.2.3.4.5 taken from a Digital Server 3300 (Whitebox version of an AS800).

Two letter port or class driver designator:

• DR: RAID set device

• DV: Floppy Drive

• EW: Ethernet port (TULIP, DEC 21040)

• EI: Ethernet port (Intel 82557 or 82559)

• PK: SCSI port (controller)

• DK: SCSI disk

• MK: SCSI tape

• PU: DSSI port

• DU: DSSI disk

• MU: DSSI tape

• JK: SCSI monitor (or robot)

• DQ: (E)IDE Device (disk or CD-ROM)

3.2. The Rest Of The Device Name

• b-> adapter ID (one letter adapter designator)

• 1->Device number (SCSI unit numbers are forced to 100x Node ID)

• 2->Bus Node ID

• 3->Channel Number

• 4->Channel Number (used for multi-channel devices)

• 5->Logical Slot number

  • EISA: they correspond to the physical slot numbers (1-3)

  • PCI:

    • slot 5= SCSI controller on system backplane (DS3300)

    • slot 6= On board VGA (DS3300)

    • slot 7= PCI to EISA bridge chip (DS3300)

    • slots 11 - 14 = Correspond to Physical PCI option slots: PCI11, PCI12, PCI13 and PCI14 (64bit) (DS3300)

• 6->Hose number: 0 PCI_0 (32bit PCI); 1 EISA (DS3300)