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# 3. SRM Device Naming

## 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)

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